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[PATCH AUTOSEL 4.19 01/11] mips: cacheinfo: report shared CPU map

by Sasha Levin

From: Vladimir Kondratiev <vladimir.kondratiev(a)intel.com> [ Upstream commit 3b1313eb32c499d46dc4c3e896d19d9564c879c4 ] Report L1 caches as shared per core; L2 - per cluster. This fixes "perf" that went crazy if shared_cpu_map attribute not reported on sysfs, in form of /sys/devices/system/cpu/cpu*/cache/index*/shared_cpu_list /sys/devices/system/cpu/cpu*/cache/index*/shared_cpu_map Signed-off-by: Vladimir Kondratiev <vladimir.kondratiev(a)intel.com> Signed-off-by: Paul Burton <paulburton(a)kernel.org> Cc: Ralf Baechle <ralf(a)linux-mips.org> Cc: James Hogan <jhogan(a)kernel.org> Cc: linux-mips(a)vger.kernel.org Cc: linux-kernel(a)vger.kernel.org Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- arch/mips/kernel/cacheinfo.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/arch/mips/kernel/cacheinfo.c b/arch/mips/kernel/cacheinfo.c index 428ef2189203..3ea95568ece4 100644 --- a/arch/mips/kernel/cacheinfo.c +++ b/arch/mips/kernel/cacheinfo.c @@ -61,6 +61,25 @@ static int __init_cache_level(unsigned int cpu) return 0; } +static void fill_cpumask_siblings(int cpu, cpumask_t *cpu_map) +{ + int cpu1; + + for_each_possible_cpu(cpu1) + if (cpus_are_siblings(cpu, cpu1)) + cpumask_set_cpu(cpu1, cpu_map); +} + +static void fill_cpumask_cluster(int cpu, cpumask_t *cpu_map) +{ + int cpu1; + int cluster = cpu_cluster(&cpu_data[cpu]); + + for_each_possible_cpu(cpu1) + if (cpu_cluster(&cpu_data[cpu1]) == cluster) + cpumask_set_cpu(cpu1, cpu_map); +} + static int __populate_cache_leaves(unsigned int cpu) { struct cpuinfo_mips *c = &current_cpu_data; @@ -68,14 +87,20 @@ static int __populate_cache_leaves(unsigned int cpu) struct cacheinfo *this_leaf = this_cpu_ci->info_list; if (c->icache.waysize) { + /* L1 caches are per core */ + fill_cpumask_siblings(cpu, &this_leaf->shared_cpu_map); populate_cache(dcache, this_leaf, 1, CACHE_TYPE_DATA); + fill_cpumask_siblings(cpu, &this_leaf->shared_cpu_map); populate_cache(icache, this_leaf, 1, CACHE_TYPE_INST); } else { populate_cache(dcache, this_leaf, 1, CACHE_TYPE_UNIFIED); } - if (c->scache.waysize) + if (c->scache.waysize) { + /* L2 cache is per cluster */ + fill_cpumask_cluster(cpu, &this_leaf->shared_cpu_map); populate_cache(scache, this_leaf, 2, CACHE_TYPE_UNIFIED); + } if (c->tcache.waysize) populate_cache(tcache, this_leaf, 3, CACHE_TYPE_UNIFIED); -- 2.20.1

5 years, 10 months

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[PATCH AUTOSEL 5.4 06/26] rxrpc: Unlock new call in rxrpc_new_incoming_call() rather than the caller

by Sasha Levin

From: David Howells <dhowells(a)redhat.com> [ Upstream commit f33121cbe91973a08e68e4bde8c3f7e6e4e351c1 ] Move the unlock and the ping transmission for a new incoming call into rxrpc_new_incoming_call() rather than doing it in the caller. This makes it clearer to see what's going on. Suggested-by: Peter Zijlstra <peterz(a)infradead.org> Signed-off-by: David Howells <dhowells(a)redhat.com> Acked-by: Peter Zijlstra (Intel) <peterz(a)infradead.org> cc: Ingo Molnar <mingo(a)redhat.com> cc: Will Deacon <will(a)kernel.org> cc: Davidlohr Bueso <dave(a)stgolabs.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- net/rxrpc/call_accept.c | 36 ++++++++++++++++++++++++++++-------- net/rxrpc/input.c | 18 ------------------ 2 files changed, 28 insertions(+), 26 deletions(-) diff --git a/net/rxrpc/call_accept.c b/net/rxrpc/call_accept.c index 135bf5cd8dd5..3685b1732f65 100644 --- a/net/rxrpc/call_accept.c +++ b/net/rxrpc/call_accept.c @@ -239,6 +239,22 @@ void rxrpc_discard_prealloc(struct rxrpc_sock *rx) kfree(b); } +/* + * Ping the other end to fill our RTT cache and to retrieve the rwind + * and MTU parameters. + */ +static void rxrpc_send_ping(struct rxrpc_call *call, struct sk_buff *skb) +{ + struct rxrpc_skb_priv *sp = rxrpc_skb(skb); + ktime_t now = skb->tstamp; + + if (call->peer->rtt_usage < 3 || + ktime_before(ktime_add_ms(call->peer->rtt_last_req, 1000), now)) + rxrpc_propose_ACK(call, RXRPC_ACK_PING, sp->hdr.serial, + true, true, + rxrpc_propose_ack_ping_for_params); +} + /* * Allocate a new incoming call from the prealloc pool, along with a connection * and a peer as necessary. @@ -346,9 +362,7 @@ struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *local, sp->hdr.seq, RX_INVALID_OPERATION, ESHUTDOWN); skb->mark = RXRPC_SKB_MARK_REJECT_ABORT; skb->priority = RX_INVALID_OPERATION; - _leave(" = NULL [close]"); - call = NULL; - goto out; + goto no_call; } /* The peer, connection and call may all have sprung into existence due @@ -361,9 +375,7 @@ struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *local, call = rxrpc_alloc_incoming_call(rx, local, peer, conn, skb); if (!call) { skb->mark = RXRPC_SKB_MARK_REJECT_BUSY; - _leave(" = NULL [busy]"); - call = NULL; - goto out; + goto no_call; } trace_rxrpc_receive(call, rxrpc_receive_incoming, @@ -432,10 +444,18 @@ struct rxrpc_call *rxrpc_new_incoming_call(struct rxrpc_local *local, */ rxrpc_put_call(call, rxrpc_call_put); - _leave(" = %p{%d}", call, call->debug_id); -out: spin_unlock(&rx->incoming_lock); + + rxrpc_send_ping(call, skb); + mutex_unlock(&call->user_mutex); + + _leave(" = %p{%d}", call, call->debug_id); return call; + +no_call: + spin_unlock(&rx->incoming_lock); + _leave(" = NULL [%u]", skb->mark); + return NULL; } /* diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c index 157be1ff8697..86bd133b4fa0 100644 --- a/net/rxrpc/input.c +++ b/net/rxrpc/input.c @@ -192,22 +192,6 @@ static void rxrpc_congestion_management(struct rxrpc_call *call, goto out_no_clear_ca; } -/* - * Ping the other end to fill our RTT cache and to retrieve the rwind - * and MTU parameters. - */ -static void rxrpc_send_ping(struct rxrpc_call *call, struct sk_buff *skb) -{ - struct rxrpc_skb_priv *sp = rxrpc_skb(skb); - ktime_t now = skb->tstamp; - - if (call->peer->rtt_usage < 3 || - ktime_before(ktime_add_ms(call->peer->rtt_last_req, 1000), now)) - rxrpc_propose_ACK(call, RXRPC_ACK_PING, sp->hdr.serial, - true, true, - rxrpc_propose_ack_ping_for_params); -} - /* * Apply a hard ACK by advancing the Tx window. */ @@ -1396,8 +1380,6 @@ int rxrpc_input_packet(struct sock *udp_sk, struct sk_buff *skb) call = rxrpc_new_incoming_call(local, rx, skb); if (!call) goto reject_packet; - rxrpc_send_ping(call, skb); - mutex_unlock(&call->user_mutex); } /* Process a call packet; this either discards or passes on the ref -- 2.20.1

5 years, 10 months

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[PATCH AUTOSEL 5.4 01/26] mips: cacheinfo: report shared CPU map

by Sasha Levin

From: Vladimir Kondratiev <vladimir.kondratiev(a)intel.com> [ Upstream commit 3b1313eb32c499d46dc4c3e896d19d9564c879c4 ] Report L1 caches as shared per core; L2 - per cluster. This fixes "perf" that went crazy if shared_cpu_map attribute not reported on sysfs, in form of /sys/devices/system/cpu/cpu*/cache/index*/shared_cpu_list /sys/devices/system/cpu/cpu*/cache/index*/shared_cpu_map Signed-off-by: Vladimir Kondratiev <vladimir.kondratiev(a)intel.com> Signed-off-by: Paul Burton <paulburton(a)kernel.org> Cc: Ralf Baechle <ralf(a)linux-mips.org> Cc: James Hogan <jhogan(a)kernel.org> Cc: linux-mips(a)vger.kernel.org Cc: linux-kernel(a)vger.kernel.org Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- arch/mips/kernel/cacheinfo.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/arch/mips/kernel/cacheinfo.c b/arch/mips/kernel/cacheinfo.c index f777e44653d5..47312c529410 100644 --- a/arch/mips/kernel/cacheinfo.c +++ b/arch/mips/kernel/cacheinfo.c @@ -50,6 +50,25 @@ static int __init_cache_level(unsigned int cpu) return 0; } +static void fill_cpumask_siblings(int cpu, cpumask_t *cpu_map) +{ + int cpu1; + + for_each_possible_cpu(cpu1) + if (cpus_are_siblings(cpu, cpu1)) + cpumask_set_cpu(cpu1, cpu_map); +} + +static void fill_cpumask_cluster(int cpu, cpumask_t *cpu_map) +{ + int cpu1; + int cluster = cpu_cluster(&cpu_data[cpu]); + + for_each_possible_cpu(cpu1) + if (cpu_cluster(&cpu_data[cpu1]) == cluster) + cpumask_set_cpu(cpu1, cpu_map); +} + static int __populate_cache_leaves(unsigned int cpu) { struct cpuinfo_mips *c = &current_cpu_data; @@ -57,14 +76,20 @@ static int __populate_cache_leaves(unsigned int cpu) struct cacheinfo *this_leaf = this_cpu_ci->info_list; if (c->icache.waysize) { + /* L1 caches are per core */ + fill_cpumask_siblings(cpu, &this_leaf->shared_cpu_map); populate_cache(dcache, this_leaf, 1, CACHE_TYPE_DATA); + fill_cpumask_siblings(cpu, &this_leaf->shared_cpu_map); populate_cache(icache, this_leaf, 1, CACHE_TYPE_INST); } else { populate_cache(dcache, this_leaf, 1, CACHE_TYPE_UNIFIED); } - if (c->scache.waysize) + if (c->scache.waysize) { + /* L2 cache is per cluster */ + fill_cpumask_cluster(cpu, &this_leaf->shared_cpu_map); populate_cache(scache, this_leaf, 2, CACHE_TYPE_UNIFIED); + } if (c->tcache.waysize) populate_cache(tcache, this_leaf, 3, CACHE_TYPE_UNIFIED); -- 2.20.1

5 years, 10 months

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[PATCH v3] mm/memory_hotplug: Fix remove_memory() lockdep splat

by Dan Williams

The daxctl unit test for the dax_kmem driver currently triggers the lockdep splat below. It results from the fact that remove_memory_block_devices() is invoked under the mem_hotplug_lock() causing lockdep entanglements with cpu_hotplug_lock(). The mem_hotplug_lock() is not needed to synchronize the memory block device sysfs interface vs the page online state, that is already handled by lock_device_hotplug(). Specifically lock_device_hotplug() is sufficient to allow try_remove_memory() to check the offline state of the memblocks and be assured that subsequent online attempts will be blocked. The device_online() path checks mem->section_count before allowing any state manipulations and mem->section_count is cleared in remove_memory_block_devices(). The add_memory() path does create memblock devices under the lock, but there is no lockdep report on that path, and it wants to unwind the hot-add (via arch_remove_memory()) if the memblock device creation fails, so it is left alone for now. This change is only possible thanks to the recent change that refactored memory block device removal out of arch_remove_memory() (commit 4c4b7f9ba948 mm/memory_hotplug: remove memory block devices before arch_remove_memory()). ====================================================== WARNING: possible circular locking dependency detected 5.5.0-rc3+ #230 Tainted: G OE ------------------------------------------------------ lt-daxctl/6459 is trying to acquire lock: ffff99c7f0003510 (kn->count#241){++++}, at: kernfs_remove_by_name_ns+0x41/0x80 but task is already holding lock: ffffffffa76a5450 (mem_hotplug_lock.rw_sem){++++}, at: percpu_down_write+0x20/0xe0 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (mem_hotplug_lock.rw_sem){++++}: __lock_acquire+0x39c/0x790 lock_acquire+0xa2/0x1b0 get_online_mems+0x3e/0xb0 kmem_cache_create_usercopy+0x2e/0x260 kmem_cache_create+0x12/0x20 ptlock_cache_init+0x20/0x28 start_kernel+0x243/0x547 secondary_startup_64+0xb6/0xc0 -> #1 (cpu_hotplug_lock.rw_sem){++++}: __lock_acquire+0x39c/0x790 lock_acquire+0xa2/0x1b0 cpus_read_lock+0x3e/0xb0 online_pages+0x37/0x300 memory_subsys_online+0x17d/0x1c0 device_online+0x60/0x80 state_store+0x65/0xd0 kernfs_fop_write+0xcf/0x1c0 vfs_write+0xdb/0x1d0 ksys_write+0x65/0xe0 do_syscall_64+0x5c/0xa0 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (kn->count#241){++++}: check_prev_add+0x98/0xa40 validate_chain+0x576/0x860 __lock_acquire+0x39c/0x790 lock_acquire+0xa2/0x1b0 __kernfs_remove+0x25f/0x2e0 kernfs_remove_by_name_ns+0x41/0x80 remove_files.isra.0+0x30/0x70 sysfs_remove_group+0x3d/0x80 sysfs_remove_groups+0x29/0x40 device_remove_attrs+0x39/0x70 device_del+0x16a/0x3f0 device_unregister+0x16/0x60 remove_memory_block_devices+0x82/0xb0 try_remove_memory+0xb5/0x130 remove_memory+0x26/0x40 dev_dax_kmem_remove+0x44/0x6a [kmem] device_release_driver_internal+0xe4/0x1c0 unbind_store+0xef/0x120 kernfs_fop_write+0xcf/0x1c0 vfs_write+0xdb/0x1d0 ksys_write+0x65/0xe0 do_syscall_64+0x5c/0xa0 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: kn->count#241 --> cpu_hotplug_lock.rw_sem --> mem_hotplug_lock.rw_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(mem_hotplug_lock.rw_sem); lock(cpu_hotplug_lock.rw_sem); lock(mem_hotplug_lock.rw_sem); lock(kn->count#241); *** DEADLOCK *** No fixes tag as this seems to have been a long standing issue that likely predated the addition of kernfs lockdep annotations. Cc: <stable(a)vger.kernel.org> Cc: Vishal Verma <vishal.l.verma(a)intel.com> Cc: David Hildenbrand <david(a)redhat.com> Cc: Pavel Tatashin <pasha.tatashin(a)soleen.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Dave Hansen <dave.hansen(a)linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams(a)intel.com> --- Changes since v2 [1]: - Apologies I overlooked that I had local changes in my tree to fix a compiler error (misspelled assert_held_device_hotplug()). Now fixed up. [1]: http://lore.kernel.org/r/157868867304.2306270.4899678179641333013.stgit@dwi… Documentation/core-api/memory-hotplug.rst | 15 +++++++++++---- drivers/base/core.c | 5 +++++ drivers/base/memory.c | 8 ++++++-- include/linux/device.h | 1 + mm/memory_hotplug.c | 10 +++++++--- 5 files changed, 30 insertions(+), 9 deletions(-) diff --git a/Documentation/core-api/memory-hotplug.rst b/Documentation/core-api/memory-hotplug.rst index de7467e48067..637b467378b7 100644 --- a/Documentation/core-api/memory-hotplug.rst +++ b/Documentation/core-api/memory-hotplug.rst @@ -90,12 +90,13 @@ Locking Internals ================= When adding/removing memory that uses memory block devices (i.e. ordinary RAM), -the device_hotplug_lock should be held to: +the device_hotplug_lock is held to: - synchronize against online/offline requests (e.g. via sysfs). This way, memory block devices can only be accessed (.online/.state attributes) by user - space once memory has been fully added. And when removing memory, we - know nobody is in critical sections. + space once memory has been fully added. And when removing memory, the + memory block device is invalidated (mem->section count set to 0) under the + lock to abort any in-flight online requests. - synchronize against CPU hotplug and similar (e.g. relevant for ACPI and PPC) Especially, there is a possible lock inversion that is avoided using @@ -112,7 +113,13 @@ can result in a lock inversion. onlining/offlining of memory should be done via device_online()/ device_offline() - to make sure it is properly synchronized to actions -via sysfs. Holding device_hotplug_lock is advised (to e.g. protect online_type) +via sysfs. Holding device_hotplug_lock is required to prevent online racing +removal. The device_hotplug_lock and memblock invalidation allows +remove_memory_block_devices() to run outside of mem_hotplug_lock to avoid lock +dependency conflicts with memblock-sysfs teardown. The add_memory() path +performs create_memory_block_devices() under mem_hotplug_lock so that if it +fails it can perform an arch_remove_memory() cleanup. There are no known lock +dependency problems with memblock-sysfs setup. When adding/removing/onlining/offlining memory or adding/removing heterogeneous/device memory, we should always hold the mem_hotplug_lock in diff --git a/drivers/base/core.c b/drivers/base/core.c index 42a672456432..5d5036370c92 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -1146,6 +1146,11 @@ void unlock_device_hotplug(void) mutex_unlock(&device_hotplug_lock); } +void assert_held_device_hotplug(void) +{ + lockdep_assert_held(&device_hotplug_lock); +} + int lock_device_hotplug_sysfs(void) { if (mutex_trylock(&device_hotplug_lock)) diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 799b43191dea..91c6fbd2383e 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -280,6 +280,10 @@ static int memory_subsys_online(struct device *dev) if (mem->state == MEM_ONLINE) return 0; + /* online lost the race with hot-unplug, abort */ + if (!mem->section_count) + return -ENXIO; + /* * If we are called from state_store(), online_type will be * set >= 0 Otherwise we were called from the device online @@ -736,8 +740,6 @@ int create_memory_block_devices(unsigned long start, unsigned long size) * Remove memory block devices for the given memory area. Start and size * have to be aligned to memory block granularity. Memory block devices * have to be offline. - * - * Called under device_hotplug_lock. */ void remove_memory_block_devices(unsigned long start, unsigned long size) { @@ -746,6 +748,8 @@ void remove_memory_block_devices(unsigned long start, unsigned long size) struct memory_block *mem; unsigned long block_id; + assert_held_device_hotplug(); + if (WARN_ON_ONCE(!IS_ALIGNED(start, memory_block_size_bytes()) || !IS_ALIGNED(size, memory_block_size_bytes()))) return; diff --git a/include/linux/device.h b/include/linux/device.h index 96ff76731e93..e042da3b1953 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -1553,6 +1553,7 @@ static inline bool device_supports_offline(struct device *dev) extern void lock_device_hotplug(void); extern void unlock_device_hotplug(void); extern int lock_device_hotplug_sysfs(void); +extern void assert_held_device_hotlpug(void); extern int device_offline(struct device *dev); extern int device_online(struct device *dev); extern void set_primary_fwnode(struct device *dev, struct fwnode_handle *fwnode); diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 55ac23ef11c1..0158cd4cca48 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1763,8 +1763,6 @@ static int __ref try_remove_memory(int nid, u64 start, u64 size) BUG_ON(check_hotplug_memory_range(start, size)); - mem_hotplug_begin(); - /* * All memory blocks must be offlined before removing memory. Check * whether all memory blocks in question are offline and return error @@ -1777,9 +1775,15 @@ static int __ref try_remove_memory(int nid, u64 start, u64 size) /* remove memmap entry */ firmware_map_remove(start, start + size, "System RAM"); - /* remove memory block devices before removing memory */ + /* + * Remove memory block devices before removing memory and before + * mem_hotplug_begin() (see Documentation/core-api/memory-hotplug.rst + * "Locking Internals"). + */ remove_memory_block_devices(start, size); + mem_hotplug_begin(); + arch_remove_memory(nid, start, size, NULL); memblock_free(start, size); memblock_remove(start, size);

5 years, 10 months

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stable-rc/linux-4.19.y boot: 81 boots: 1 failed, 75 passed with 5 untried/unknown (v4.19.94-65-ga9b05c4e2c9e)

by kernelci.org bot

stable-rc/linux-4.19.y boot: 81 boots: 1 failed, 75 passed with 5 untried/unknown (v4.19.94-65-ga9b05c4e2c9e) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.19.y/kernel/v4.1… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.19.y/kernel/v4.19.94-65… Tree: stable-rc Branch: linux-4.19.y Git Describe: v4.19.94-65-ga9b05c4e2c9e Git Commit: a9b05c4e2c9e96954ae9bafea58eb23cff45fd9a Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 50 unique boards, 17 SoC families, 14 builds out of 206 Boot Regressions Detected: arm: davinci_all_defconfig: gcc-8: da850-lcdk: lab-baylibre: new failure (last pass: v4.19.94-64-gc6052d0e863f) multi_v7_defconfig: gcc-8: alpine-db: lab-baylibre: new failure (last pass: v4.19.94-64-gc6052d0e863f) at91-sama5d4_xplained: lab-baylibre: new failure (last pass: v4.19.94-64-gc6052d0e863f) sunxi_defconfig: gcc-8: sun8i-h2-plus-orangepi-r1: lab-baylibre: new failure (last pass: v4.19.94-64-gc6052d0e863f) Boot Failure Detected: arm: multi_v7_defconfig: gcc-8: alpine-db: 1 failed lab --- For more info write to <info(a)kernelci.org>

5 years, 10 months

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[PATCH v2] mm/memory_hotplug: Fix remove_memory() lockdep splat

by Dan Williams

The daxctl unit test for the dax_kmem driver currently triggers the lockdep splat below. It results from the fact that remove_memory_block_devices() is invoked under the mem_hotplug_lock() causing lockdep entanglements with cpu_hotplug_lock(). The mem_hotplug_lock() is not needed to synchronize the memory block device sysfs interface vs the page online state, that is already handled by lock_device_hotplug(). Specifically lock_device_hotplug() is sufficient to allow try_remove_memory() to check the offline state of the memblocks and be assured that subsequent online attempts will be blocked. The device_online() path checks mem->section_count before allowing any state manipulations and mem->section_count is cleared in remove_memory_block_devices(). The add_memory() path does create memblock devices under the lock, but there is no lockdep report on that path, and it wants to unwind the hot-add (via arch_remove_memory()) if the memblock device creation fails, so it is left alone for now. This change is only possible thanks to the recent change that refactored memory block device removal out of arch_remove_memory() (commit 4c4b7f9ba948 mm/memory_hotplug: remove memory block devices before arch_remove_memory()). ====================================================== WARNING: possible circular locking dependency detected 5.5.0-rc3+ #230 Tainted: G OE ------------------------------------------------------ lt-daxctl/6459 is trying to acquire lock: ffff99c7f0003510 (kn->count#241){++++}, at: kernfs_remove_by_name_ns+0x41/0x80 but task is already holding lock: ffffffffa76a5450 (mem_hotplug_lock.rw_sem){++++}, at: percpu_down_write+0x20/0xe0 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (mem_hotplug_lock.rw_sem){++++}: __lock_acquire+0x39c/0x790 lock_acquire+0xa2/0x1b0 get_online_mems+0x3e/0xb0 kmem_cache_create_usercopy+0x2e/0x260 kmem_cache_create+0x12/0x20 ptlock_cache_init+0x20/0x28 start_kernel+0x243/0x547 secondary_startup_64+0xb6/0xc0 -> #1 (cpu_hotplug_lock.rw_sem){++++}: __lock_acquire+0x39c/0x790 lock_acquire+0xa2/0x1b0 cpus_read_lock+0x3e/0xb0 online_pages+0x37/0x300 memory_subsys_online+0x17d/0x1c0 device_online+0x60/0x80 state_store+0x65/0xd0 kernfs_fop_write+0xcf/0x1c0 vfs_write+0xdb/0x1d0 ksys_write+0x65/0xe0 do_syscall_64+0x5c/0xa0 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (kn->count#241){++++}: check_prev_add+0x98/0xa40 validate_chain+0x576/0x860 __lock_acquire+0x39c/0x790 lock_acquire+0xa2/0x1b0 __kernfs_remove+0x25f/0x2e0 kernfs_remove_by_name_ns+0x41/0x80 remove_files.isra.0+0x30/0x70 sysfs_remove_group+0x3d/0x80 sysfs_remove_groups+0x29/0x40 device_remove_attrs+0x39/0x70 device_del+0x16a/0x3f0 device_unregister+0x16/0x60 remove_memory_block_devices+0x82/0xb0 try_remove_memory+0xb5/0x130 remove_memory+0x26/0x40 dev_dax_kmem_remove+0x44/0x6a [kmem] device_release_driver_internal+0xe4/0x1c0 unbind_store+0xef/0x120 kernfs_fop_write+0xcf/0x1c0 vfs_write+0xdb/0x1d0 ksys_write+0x65/0xe0 do_syscall_64+0x5c/0xa0 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: kn->count#241 --> cpu_hotplug_lock.rw_sem --> mem_hotplug_lock.rw_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(mem_hotplug_lock.rw_sem); lock(cpu_hotplug_lock.rw_sem); lock(mem_hotplug_lock.rw_sem); lock(kn->count#241); *** DEADLOCK *** No fixes tag as this seems to have been a long standing issue that likely predated the addition of kernfs lockdep annotations. Cc: <stable(a)vger.kernel.org> Cc: Vishal Verma <vishal.l.verma(a)intel.com> Cc: David Hildenbrand <david(a)redhat.com> Cc: Pavel Tatashin <pasha.tatashin(a)soleen.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Dave Hansen <dave.hansen(a)linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams(a)intel.com> --- Changes since v1 [1]: - David prompted me to move the details of why remove_memory_block_devices() is performed outside mem_hotplug_lock to Documentation/core-api/memory-hotplug.rst. - While updating Documentation/core-api/memory-hotplug.rst I noticed that only memory_subsys_offline() was checking for memory-block-device invalidation (via mem->section_count). Added a similar check to memory_subsys_online(). - Also, while trying to document why create_memory_block_devices() is still performed under mem_hotplug_lock(), I noticed that add_memory_resources() wants to perform arch_remove_memory() after a failed create_memory_block_devices() and that should remain an atomic event. - Introduce assert_held_device_hotplug() for remove_memory_block_devices() to runtime validate its locking assumptions. [1]: https://lore.kernel.org/r/157863061737.2230556.3959730620803366776.stgit@dw… Documentation/core-api/memory-hotplug.rst | 15 +++++++++++---- drivers/base/core.c | 5 +++++ drivers/base/memory.c | 8 ++++++-- include/linux/device.h | 1 + mm/memory_hotplug.c | 10 +++++++--- 5 files changed, 30 insertions(+), 9 deletions(-) diff --git a/Documentation/core-api/memory-hotplug.rst b/Documentation/core-api/memory-hotplug.rst index de7467e48067..637b467378b7 100644 --- a/Documentation/core-api/memory-hotplug.rst +++ b/Documentation/core-api/memory-hotplug.rst @@ -90,12 +90,13 @@ Locking Internals ================= When adding/removing memory that uses memory block devices (i.e. ordinary RAM), -the device_hotplug_lock should be held to: +the device_hotplug_lock is held to: - synchronize against online/offline requests (e.g. via sysfs). This way, memory block devices can only be accessed (.online/.state attributes) by user - space once memory has been fully added. And when removing memory, we - know nobody is in critical sections. + space once memory has been fully added. And when removing memory, the + memory block device is invalidated (mem->section count set to 0) under the + lock to abort any in-flight online requests. - synchronize against CPU hotplug and similar (e.g. relevant for ACPI and PPC) Especially, there is a possible lock inversion that is avoided using @@ -112,7 +113,13 @@ can result in a lock inversion. onlining/offlining of memory should be done via device_online()/ device_offline() - to make sure it is properly synchronized to actions -via sysfs. Holding device_hotplug_lock is advised (to e.g. protect online_type) +via sysfs. Holding device_hotplug_lock is required to prevent online racing +removal. The device_hotplug_lock and memblock invalidation allows +remove_memory_block_devices() to run outside of mem_hotplug_lock to avoid lock +dependency conflicts with memblock-sysfs teardown. The add_memory() path +performs create_memory_block_devices() under mem_hotplug_lock so that if it +fails it can perform an arch_remove_memory() cleanup. There are no known lock +dependency problems with memblock-sysfs setup. When adding/removing/onlining/offlining memory or adding/removing heterogeneous/device memory, we should always hold the mem_hotplug_lock in diff --git a/drivers/base/core.c b/drivers/base/core.c index 42a672456432..5d5036370c92 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -1146,6 +1146,11 @@ void unlock_device_hotplug(void) mutex_unlock(&device_hotplug_lock); } +void assert_held_device_hotplug(void) +{ + lockdep_assert_held(&device_hotplug_lock); +} + int lock_device_hotplug_sysfs(void) { if (mutex_trylock(&device_hotplug_lock)) diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 799b43191dea..91c6fbd2383e 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -280,6 +280,10 @@ static int memory_subsys_online(struct device *dev) if (mem->state == MEM_ONLINE) return 0; + /* online lost the race with hot-unplug, abort */ + if (!mem->section_count) + return -ENXIO; + /* * If we are called from state_store(), online_type will be * set >= 0 Otherwise we were called from the device online @@ -736,8 +740,6 @@ int create_memory_block_devices(unsigned long start, unsigned long size) * Remove memory block devices for the given memory area. Start and size * have to be aligned to memory block granularity. Memory block devices * have to be offline. - * - * Called under device_hotplug_lock. */ void remove_memory_block_devices(unsigned long start, unsigned long size) { @@ -746,6 +748,8 @@ void remove_memory_block_devices(unsigned long start, unsigned long size) struct memory_block *mem; unsigned long block_id; + assert_held_device_hotplug(); + if (WARN_ON_ONCE(!IS_ALIGNED(start, memory_block_size_bytes()) || !IS_ALIGNED(size, memory_block_size_bytes()))) return; diff --git a/include/linux/device.h b/include/linux/device.h index 96ff76731e93..e042da3b1953 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -1553,6 +1553,7 @@ static inline bool device_supports_offline(struct device *dev) extern void lock_device_hotplug(void); extern void unlock_device_hotplug(void); extern int lock_device_hotplug_sysfs(void); +extern void assert_held_device_hotlpug(void); extern int device_offline(struct device *dev); extern int device_online(struct device *dev); extern void set_primary_fwnode(struct device *dev, struct fwnode_handle *fwnode); diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 55ac23ef11c1..0158cd4cca48 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1763,8 +1763,6 @@ static int __ref try_remove_memory(int nid, u64 start, u64 size) BUG_ON(check_hotplug_memory_range(start, size)); - mem_hotplug_begin(); - /* * All memory blocks must be offlined before removing memory. Check * whether all memory blocks in question are offline and return error @@ -1777,9 +1775,15 @@ static int __ref try_remove_memory(int nid, u64 start, u64 size) /* remove memmap entry */ firmware_map_remove(start, start + size, "System RAM"); - /* remove memory block devices before removing memory */ + /* + * Remove memory block devices before removing memory and before + * mem_hotplug_begin() (see Documentation/core-api/memory-hotplug.rst + * "Locking Internals"). + */ remove_memory_block_devices(start, size); + mem_hotplug_begin(); + arch_remove_memory(nid, start, size, NULL); memblock_free(start, size); memblock_remove(start, size);

5 years, 10 months

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stable-rc/linux-4.14.y boot: 45 boots: 3 failed, 35 passed with 7 untried/unknown (v4.14.163-48-gc277ad1cbef4)

by kernelci.org bot

stable-rc/linux-4.14.y boot: 45 boots: 3 failed, 35 passed with 7 untried/unknown (v4.14.163-48-gc277ad1cbef4) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.14.y/kernel/v4.1… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.14.y/kernel/v4.14.163-4… Tree: stable-rc Branch: linux-4.14.y Git Describe: v4.14.163-48-gc277ad1cbef4 Git Commit: c277ad1cbef473690df9183fe3accb307f93094e Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 32 unique boards, 10 SoC families, 11 builds out of 201 Boot Regressions Detected: arm: davinci_all_defconfig: gcc-8: da850-lcdk: lab-baylibre: new failure (last pass: v4.14.163-42-gd508caa26185) multi_v7_defconfig: gcc-8: alpine-db: lab-baylibre: new failure (last pass: v4.14.163-42-gd508caa26185) at91-sama5d4_xplained: lab-baylibre: new failure (last pass: v4.14.163-42-gd508caa26185) arm64: defconfig: gcc-8: bcm2837-rpi-3-b: lab-baylibre: new failure (last pass: v4.14.163-40-g258da0180e68) meson-gxl-s905d-p230: lab-baylibre: failing since 1 day (last pass: v4.14.163 - first fail: v4.14.163-40-g258da0180e68) meson-gxl-s905x-khadas-vim: lab-baylibre: new failure (last pass: v4.14.163-40-g258da0180e68) Boot Failures Detected: arm64: defconfig: gcc-8: bcm2837-rpi-3-b: 1 failed lab meson-gxm-q200: 1 failed lab arm: multi_v7_defconfig: gcc-8: at91-sama5d4_xplained: 1 failed lab --- For more info write to <info(a)kernelci.org>

5 years, 10 months

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stable-rc/linux-4.4.y boot: 53 boots: 1 failed, 44 passed with 8 untried/unknown (v4.4.208-49-g6a7085976588)

by kernelci.org bot

stable-rc/linux-4.4.y boot: 53 boots: 1 failed, 44 passed with 8 untried/unknown (v4.4.208-49-g6a7085976588) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.4.y/kernel/v4.4.… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.4.y/kernel/v4.4.208-49-… Tree: stable-rc Branch: linux-4.4.y Git Describe: v4.4.208-49-g6a7085976588 Git Commit: 6a708597658800a06a47cda9f486339ff2a93ba6 Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 26 unique boards, 11 SoC families, 10 builds out of 190 Boot Regressions Detected: arm: multi_v7_defconfig: gcc-8: alpine-db: lab-baylibre: new failure (last pass: v4.4.208) am335x-boneblack: lab-baylibre: new failure (last pass: v4.4.208) lab-drue: new failure (last pass: v4.4.208) at91-sama5d4_xplained: lab-baylibre: new failure (last pass: v4.4.208) sunxi_defconfig: gcc-8: sun4i-a10-olinuxino-lime: lab-baylibre: new failure (last pass: v4.4.208-50-g8ff01da61a3f) Boot Failure Detected: arm: sama5_defconfig: gcc-8: at91-sama5d4_xplained: 1 failed lab --- For more info write to <info(a)kernelci.org>

5 years, 10 months

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[PATCH v3] tools lib: Fix builds when glibc contains strlcpy

by Vitaly Chikunov

Disable a couple of compilation warning (which are treated as errors) on strlcpy definition and declaration, allow users to compile perf and kernel (objtool). 1. When glibc have strlcpy (such as in ALT Linux since 2004) objtool and perf build fails with this (in gcc): In file included from exec-cmd.c:3: tools/include/linux/string.h:20:15: error: redundant redeclaration of ‘strlcpy’ [-Werror=redundant-decls] 20 | extern size_t strlcpy(char *dest, const char *src, size_t size); 2. Clang ignores `-Wredundant-decls', but produces another warning when building perf: CC util/string.o ../lib/string.c:99:8: error: attribute declaration must precede definition [-Werror,-Wignored-attributes] size_t __weak strlcpy(char *dest, const char *src, size_t size) ../../tools/include/linux/compiler.h:66:34: note: expanded from macro '__weak' # define __weak __attribute__((weak)) /usr/include/bits/string_fortified.h:151:8: note: previous definition is here __NTH (strlcpy (char *__restrict __dest, const char *__restrict __src, Fixes: ce99091 ("perf tools: Move strlcpy() from perf to tools/lib/string.c") Fixes: 0215d59 ("tools lib: Reinstate strlcpy() header guard with __UCLIBC__") Resolves: https://bugzilla.kernel.org/show_bug.cgi?id=118481 Signed-off-by: Vitaly Chikunov <vt(a)altlinux.org> Reviewed-by: Dmitry V. Levin <ldv(a)altlinux.org> Cc: Dmitry V. Levin <ldv(a)altlinux.org> Cc: Josh Poimboeuf <jpoimboe(a)redhat.com> Cc: Vineet Gupta <Vineet.Gupta1(a)synopsys.com> Cc: stable(a)vger.kernel.org --- Changes since v2: - v2 was failing to compile on gcc-4.9, because there was no `-Wignored-attributes'. Make this pragma only efficient for Clang. Reported-by: kbuild test robot <lkp(a)intel.com> Changes since v1: - Fix compiling with clang due to __weak triggering `-Wignored-attributes'. tools/include/linux/string.h | 3 +++ tools/lib/string.c | 7 +++++++ 2 files changed, 10 insertions(+) diff --git a/tools/include/linux/string.h b/tools/include/linux/string.h index 980cb9266718..99ede7f5dfb8 100644 --- a/tools/include/linux/string.h +++ b/tools/include/linux/string.h @@ -17,7 +17,10 @@ int strtobool(const char *s, bool *res); * However uClibc headers also define __GLIBC__ hence the hack below */ #if defined(__GLIBC__) && !defined(__UCLIBC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wredundant-decls" extern size_t strlcpy(char *dest, const char *src, size_t size); +#pragma GCC diagnostic pop #endif char *str_error_r(int errnum, char *buf, size_t buflen); diff --git a/tools/lib/string.c b/tools/lib/string.c index f2ae1b87c719..f645343815de 100644 --- a/tools/lib/string.c +++ b/tools/lib/string.c @@ -96,6 +96,10 @@ int strtobool(const char *s, bool *res) * If libc has strlcpy() then that version will override this * implementation: */ +#ifdef __clang__ +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wignored-attributes" +#endif size_t __weak strlcpy(char *dest, const char *src, size_t size) { size_t ret = strlen(src); @@ -107,6 +111,9 @@ size_t __weak strlcpy(char *dest, const char *src, size_t size) } return ret; } +#ifdef __clang__ +#pragma clang diagnostic pop +#endif /** * skip_spaces - Removes leading whitespace from @str. -- 2.11.0

5 years, 10 months

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stable-rc/linux-4.19.y build: 206 builds: 0 failed, 206 passed, 6 warnings (v4.19.94-65-ga9b05c4e2c9e)

by kernelci.org bot

stable-rc/linux-4.19.y build: 206 builds: 0 failed, 206 passed, 6 warnings (v4.19.94-65-ga9b05c4e2c9e) Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.19.y/kernel/v4.19.94-65… Tree: stable-rc Branch: linux-4.19.y Git Describe: v4.19.94-65-ga9b05c4e2c9e Git Commit: a9b05c4e2c9e96954ae9bafea58eb23cff45fd9a Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Built: 7 unique architectures Warnings Detected: arc: arm64: arm: i386: mips: lemote2f_defconfig (gcc-8): 1 warning loongson3_defconfig (gcc-8): 2 warnings malta_qemu_32r6_defconfig (gcc-8): 1 warning nlm_xlp_defconfig (gcc-8): 1 warning riscv: x86_64: tinyconfig (gcc-8): 1 warning Warnings summary: 3 net/core/rtnetlink.c:3181:1: warning: the frame size of 1312 bytes is larger than 1024 bytes [-Wframe-larger-than=] 1 {standard input}:131: Warning: macro instruction expanded into multiple instructions 1 arch/mips/configs/loongson3_defconfig:55:warning: symbol value 'm' invalid for HOTPLUG_PCI_SHPC 1 .config:1009:warning: override: UNWINDER_GUESS changes choice state ================================================================================ Detailed per-defconfig build reports: -------------------------------------------------------------------------------- 32r2el_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- acs5k_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- acs5k_tiny_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (x86_64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arm64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (riscv, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- allnoconfig (i386, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- am200epdkit_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ar7_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- aspeed_g4_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- aspeed_g5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- assabet_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- at91_dt_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ath25_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ath79_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- axm55xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- axs103_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- axs103_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- badge4_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm2835_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm47xx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bcm63xx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bigsur_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bmips_be_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- bmips_stb_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- capcella_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cavium_octeon_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cerfcube_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ci20_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- clps711x_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cm_x2xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cm_x300_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cns3420vb_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- cobalt_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- colibri_pxa270_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- colibri_pxa300_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- collie_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- corgi_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- davinci_all_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- db1xxx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- decstation_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig (arm64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- defconfig (riscv, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- dove_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- e55_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ebsa110_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- efm32_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- em_x270_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ep93xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- eseries_pxa_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- exynos_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ezx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- footbridge_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- fuloong2e_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- gcw0_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- gemini_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- gpr_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- h3600_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- h5000_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- hackkit_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- haps_hs_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- haps_hs_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- hisi_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- hsdk_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- i386_defconfig (i386, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imote2_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v4_v5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- imx_v6_v7_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- integrator_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop13xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop32x_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- iop33x_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip22_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip27_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip28_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ip32_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ixp4xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jazz_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jmr3927_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- jornada720_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- keystone_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- ks8695_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lart_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lasat_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lemote2f_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: net/core/rtnetlink.c:3181:1: warning: the frame size of 1312 bytes is larger than 1024 bytes [-Wframe-larger-than=] -------------------------------------------------------------------------------- loongson1b_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- loongson1c_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- loongson3_defconfig (mips, gcc-8) — PASS, 0 errors, 2 warnings, 0 section mismatches Warnings: arch/mips/configs/loongson3_defconfig:55:warning: symbol value 'm' invalid for HOTPLUG_PCI_SHPC net/core/rtnetlink.c:3181:1: warning: the frame size of 1312 bytes is larger than 1024 bytes [-Wframe-larger-than=] -------------------------------------------------------------------------------- lpc18xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lpc32xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lpd270_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- lubbock_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- magician_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mainstone_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_kvm_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_kvm_guest_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- malta_qemu_32r6_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: {standard input}:131: Warning: macro instruction expanded into multiple instructions -------------------------------------------------------------------------------- maltaaprp_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltasmvp_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltasmvp_eva_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltaup_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- maltaup_xpa_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- markeins_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mini2440_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mips_paravirt_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mmp2_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- moxart_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mpc30x_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mps2_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- msp71xx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mtx1_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v4t_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- multi_v7_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mv78xx0_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mvebu_v5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mvebu_v7_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- mxs_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- neponset_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- netwinder_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- netx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nhk8815_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nlm_xlp_defconfig (mips, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: net/core/rtnetlink.c:3181:1: warning: the frame size of 1312 bytes is larger than 1024 bytes [-Wframe-larger-than=] -------------------------------------------------------------------------------- nlm_xlr_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nsim_hs_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nsim_hs_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nsimosci_hs_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nsimosci_hs_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nuc910_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nuc950_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- nuc960_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap1_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omap2plus_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- omega2p_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- orion5x_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- oxnas_v6_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- palmz72_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pcm027_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pic32mzda_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pistachio_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pleb_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pnx8335_stb225_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- prima2_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa168_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa255-idp_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa3xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa910_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- pxa_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- qcom_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- qi_lb60_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- raumfeld_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rb532_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rbtx49xx_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- realview_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rm200_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rpc_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- rt305x_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- s3c2410_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- s3c6400_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- s5pv210_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sama5_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sb1250_swarm_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- shannon_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- shmobile_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- simpad_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- socfpga_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear13xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear3xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spear6xx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- spitz_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- stm32_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- sunxi_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tango4_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0219_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0226_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tb0287_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tct_hammer_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tegra_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (arm64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (i386, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (x86_64, gcc-8) — PASS, 0 errors, 1 warning, 0 section mismatches Warnings: .config:1009:warning: override: UNWINDER_GUESS changes choice state -------------------------------------------------------------------------------- tinyconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- tinyconfig (riscv, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- trizeps4_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- u300_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- u8500_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vdk_hs38_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vdk_hs38_smp_defconfig (arc, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- versatile_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vexpress_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vf610m4_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- viper_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vocore2_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- vt8500_v6_v7_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- workpad_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- x86_64_defconfig (x86_64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- xcep_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- xway_defconfig (mips, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- zeus_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches -------------------------------------------------------------------------------- zx_defconfig (arm, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches --- For more info write to <info(a)kernelci.org>

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