October 2023 - Linux-kselftest-mirror

[PATCH] Lower the ptrace permissions so that the memfd_secrect test program runs without an issue.

by Itaru Kitayama

--- On Ubuntu and probably other distros, ptrace permissions are tightend a bit by default; i.e., /proc/sys/kernel/yama/ptrace_score is set to 1. This cases memfd_secret's ptrace attach test fails with a permission error. Set it to 0 piror to running the program. Signed-off-by: Itaru Kitayama <itaru.kitayama(a)linux.dev> --- tools/testing/selftests/mm/run_vmtests.sh | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh index 3e2bc818d566..7d31718ce834 100755 --- a/tools/testing/selftests/mm/run_vmtests.sh +++ b/tools/testing/selftests/mm/run_vmtests.sh @@ -303,6 +303,7 @@ CATEGORY="hmm" run_test bash ./test_hmm.sh smoke # MADV_POPULATE_READ and MADV_POPULATE_WRITE tests CATEGORY="madv_populate" run_test ./madv_populate +echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope CATEGORY="memfd_secret" run_test ./memfd_secret # KSM KSM_MERGE_TIME_HUGE_PAGES test with size of 100 --- base-commit: ffc253263a1375a65fa6c9f62a893e9767fbebfa change-id: 20231030-selftest-c75b1b460817 Best regards, -- Itaru Kitayama <itaru.kitayama(a)linux.dev>

6 months, 3 weeks

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[PATCH AUTOSEL 6.1 35/39] netfilter: nf_tables: audit log object reset once per table

by Sasha Levin

From: Phil Sutter <phil(a)nwl.cc> [ Upstream commit 1baf0152f7707c6c7e4ea815dcc1f431c0e603f9 ] When resetting multiple objects at once (via dump request), emit a log message per table (or filled skb) and resurrect the 'entries' parameter to contain the number of objects being logged for. To test the skb exhaustion path, perform some bulk counter and quota adds in the kselftest. Signed-off-by: Phil Sutter <phil(a)nwl.cc> Reviewed-by: Richard Guy Briggs <rgb(a)redhat.com> Acked-by: Paul Moore <paul(a)paul-moore.com> (Audit) Signed-off-by: Florian Westphal <fw(a)strlen.de> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- net/netfilter/nf_tables_api.c | 50 +++++++++++-------- .../testing/selftests/netfilter/nft_audit.sh | 46 +++++++++++++++++ 2 files changed, 74 insertions(+), 22 deletions(-) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 5e3dbe2652dbd..5c783199b4999 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -7324,6 +7324,16 @@ static int nf_tables_fill_obj_info(struct sk_buff *skb, struct net *net, return -1; } +static void audit_log_obj_reset(const struct nft_table *table, + unsigned int base_seq, unsigned int nentries) +{ + char *buf = kasprintf(GFP_ATOMIC, "%s:%u", table->name, base_seq); + + audit_log_nfcfg(buf, table->family, nentries, + AUDIT_NFT_OP_OBJ_RESET, GFP_ATOMIC); + kfree(buf); +} + struct nft_obj_filter { char *table; u32 type; @@ -7338,8 +7348,10 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb) struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; struct nftables_pernet *nft_net; + unsigned int entries = 0; struct nft_object *obj; bool reset = false; + int rc = 0; if (NFNL_MSG_TYPE(cb->nlh->nlmsg_type) == NFT_MSG_GETOBJ_RESET) reset = true; @@ -7352,6 +7364,7 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb) if (family != NFPROTO_UNSPEC && family != table->family) continue; + entries = 0; list_for_each_entry_rcu(obj, &table->objects, list) { if (!nft_is_active(net, obj)) goto cont; @@ -7367,34 +7380,27 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb) filter->type != NFT_OBJECT_UNSPEC && obj->ops->type->type != filter->type) goto cont; - if (reset) { - char *buf = kasprintf(GFP_ATOMIC, - "%s:%u", - table->name, - nft_net->base_seq); - - audit_log_nfcfg(buf, - family, - obj->handle, - AUDIT_NFT_OP_OBJ_RESET, - GFP_ATOMIC); - kfree(buf); - } - if (nf_tables_fill_obj_info(skb, net, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - NFT_MSG_NEWOBJ, - NLM_F_MULTI | NLM_F_APPEND, - table->family, table, - obj, reset) < 0) - goto done; + rc = nf_tables_fill_obj_info(skb, net, + NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, + NFT_MSG_NEWOBJ, + NLM_F_MULTI | NLM_F_APPEND, + table->family, table, + obj, reset); + if (rc < 0) + break; + entries++; nl_dump_check_consistent(cb, nlmsg_hdr(skb)); cont: idx++; } + if (reset && entries) + audit_log_obj_reset(table, nft_net->base_seq, entries); + if (rc < 0) + break; } -done: rcu_read_unlock(); cb->args[0] = idx; @@ -7499,7 +7505,7 @@ static int nf_tables_getobj(struct sk_buff *skb, const struct nfnl_info *info, audit_log_nfcfg(buf, family, - obj->handle, + 1, AUDIT_NFT_OP_OBJ_RESET, GFP_ATOMIC); kfree(buf); diff --git a/tools/testing/selftests/netfilter/nft_audit.sh b/tools/testing/selftests/netfilter/nft_audit.sh index bb34329e02a7f..e94a80859bbdb 100755 --- a/tools/testing/selftests/netfilter/nft_audit.sh +++ b/tools/testing/selftests/netfilter/nft_audit.sh @@ -93,6 +93,12 @@ do_test 'nft add counter t1 c1' \ do_test 'nft add counter t2 c1; add counter t2 c2' \ 'table=t2 family=2 entries=2 op=nft_register_obj' +for ((i = 3; i <= 500; i++)); do + echo "add counter t2 c$i" +done >$rulefile +do_test "nft -f $rulefile" \ +'table=t2 family=2 entries=498 op=nft_register_obj' + # adding/updating quotas do_test 'nft add quota t1 q1 { 10 bytes }' \ @@ -101,6 +107,12 @@ do_test 'nft add quota t1 q1 { 10 bytes }' \ do_test 'nft add quota t2 q1 { 10 bytes }; add quota t2 q2 { 10 bytes }' \ 'table=t2 family=2 entries=2 op=nft_register_obj' +for ((i = 3; i <= 500; i++)); do + echo "add quota t2 q$i { 10 bytes }" +done >$rulefile +do_test "nft -f $rulefile" \ +'table=t2 family=2 entries=498 op=nft_register_obj' + # changing the quota value triggers obj update path do_test 'nft add quota t1 q1 { 20 bytes }' \ 'table=t1 family=2 entries=1 op=nft_register_obj' @@ -150,6 +162,40 @@ done do_test 'nft reset set t1 s' \ 'table=t1 family=2 entries=3 op=nft_reset_setelem' +# resetting counters + +do_test 'nft reset counter t1 c1' \ +'table=t1 family=2 entries=1 op=nft_reset_obj' + +do_test 'nft reset counters t1' \ +'table=t1 family=2 entries=1 op=nft_reset_obj' + +do_test 'nft reset counters t2' \ +'table=t2 family=2 entries=342 op=nft_reset_obj +table=t2 family=2 entries=158 op=nft_reset_obj' + +do_test 'nft reset counters' \ +'table=t1 family=2 entries=1 op=nft_reset_obj +table=t2 family=2 entries=341 op=nft_reset_obj +table=t2 family=2 entries=159 op=nft_reset_obj' + +# resetting quotas + +do_test 'nft reset quota t1 q1' \ +'table=t1 family=2 entries=1 op=nft_reset_obj' + +do_test 'nft reset quotas t1' \ +'table=t1 family=2 entries=1 op=nft_reset_obj' + +do_test 'nft reset quotas t2' \ +'table=t2 family=2 entries=315 op=nft_reset_obj +table=t2 family=2 entries=185 op=nft_reset_obj' + +do_test 'nft reset quotas' \ +'table=t1 family=2 entries=1 op=nft_reset_obj +table=t2 family=2 entries=314 op=nft_reset_obj +table=t2 family=2 entries=186 op=nft_reset_obj' + # deleting rules readarray -t handles < <(nft -a list chain t1 c1 | \ -- 2.42.0

6 months, 3 weeks

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[PATCH AUTOSEL 6.5 47/52] netfilter: nf_tables: audit log object reset once per table

by Sasha Levin

From: Phil Sutter <phil(a)nwl.cc> [ Upstream commit 1baf0152f7707c6c7e4ea815dcc1f431c0e603f9 ] When resetting multiple objects at once (via dump request), emit a log message per table (or filled skb) and resurrect the 'entries' parameter to contain the number of objects being logged for. To test the skb exhaustion path, perform some bulk counter and quota adds in the kselftest. Signed-off-by: Phil Sutter <phil(a)nwl.cc> Reviewed-by: Richard Guy Briggs <rgb(a)redhat.com> Acked-by: Paul Moore <paul(a)paul-moore.com> (Audit) Signed-off-by: Florian Westphal <fw(a)strlen.de> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- net/netfilter/nf_tables_api.c | 50 +++++++++++-------- .../testing/selftests/netfilter/nft_audit.sh | 46 +++++++++++++++++ 2 files changed, 74 insertions(+), 22 deletions(-) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index be5869366c7d3..bddf68f364fb5 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -7612,6 +7612,16 @@ static int nf_tables_fill_obj_info(struct sk_buff *skb, struct net *net, return -1; } +static void audit_log_obj_reset(const struct nft_table *table, + unsigned int base_seq, unsigned int nentries) +{ + char *buf = kasprintf(GFP_ATOMIC, "%s:%u", table->name, base_seq); + + audit_log_nfcfg(buf, table->family, nentries, + AUDIT_NFT_OP_OBJ_RESET, GFP_ATOMIC); + kfree(buf); +} + struct nft_obj_filter { char *table; u32 type; @@ -7626,8 +7636,10 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb) struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; struct nftables_pernet *nft_net; + unsigned int entries = 0; struct nft_object *obj; bool reset = false; + int rc = 0; if (NFNL_MSG_TYPE(cb->nlh->nlmsg_type) == NFT_MSG_GETOBJ_RESET) reset = true; @@ -7640,6 +7652,7 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb) if (family != NFPROTO_UNSPEC && family != table->family) continue; + entries = 0; list_for_each_entry_rcu(obj, &table->objects, list) { if (!nft_is_active(net, obj)) goto cont; @@ -7655,34 +7668,27 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb) filter->type != NFT_OBJECT_UNSPEC && obj->ops->type->type != filter->type) goto cont; - if (reset) { - char *buf = kasprintf(GFP_ATOMIC, - "%s:%u", - table->name, - nft_net->base_seq); - - audit_log_nfcfg(buf, - family, - obj->handle, - AUDIT_NFT_OP_OBJ_RESET, - GFP_ATOMIC); - kfree(buf); - } - if (nf_tables_fill_obj_info(skb, net, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - NFT_MSG_NEWOBJ, - NLM_F_MULTI | NLM_F_APPEND, - table->family, table, - obj, reset) < 0) - goto done; + rc = nf_tables_fill_obj_info(skb, net, + NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, + NFT_MSG_NEWOBJ, + NLM_F_MULTI | NLM_F_APPEND, + table->family, table, + obj, reset); + if (rc < 0) + break; + entries++; nl_dump_check_consistent(cb, nlmsg_hdr(skb)); cont: idx++; } + if (reset && entries) + audit_log_obj_reset(table, nft_net->base_seq, entries); + if (rc < 0) + break; } -done: rcu_read_unlock(); cb->args[0] = idx; @@ -7787,7 +7793,7 @@ static int nf_tables_getobj(struct sk_buff *skb, const struct nfnl_info *info, audit_log_nfcfg(buf, family, - obj->handle, + 1, AUDIT_NFT_OP_OBJ_RESET, GFP_ATOMIC); kfree(buf); diff --git a/tools/testing/selftests/netfilter/nft_audit.sh b/tools/testing/selftests/netfilter/nft_audit.sh index bb34329e02a7f..e94a80859bbdb 100755 --- a/tools/testing/selftests/netfilter/nft_audit.sh +++ b/tools/testing/selftests/netfilter/nft_audit.sh @@ -93,6 +93,12 @@ do_test 'nft add counter t1 c1' \ do_test 'nft add counter t2 c1; add counter t2 c2' \ 'table=t2 family=2 entries=2 op=nft_register_obj' +for ((i = 3; i <= 500; i++)); do + echo "add counter t2 c$i" +done >$rulefile +do_test "nft -f $rulefile" \ +'table=t2 family=2 entries=498 op=nft_register_obj' + # adding/updating quotas do_test 'nft add quota t1 q1 { 10 bytes }' \ @@ -101,6 +107,12 @@ do_test 'nft add quota t1 q1 { 10 bytes }' \ do_test 'nft add quota t2 q1 { 10 bytes }; add quota t2 q2 { 10 bytes }' \ 'table=t2 family=2 entries=2 op=nft_register_obj' +for ((i = 3; i <= 500; i++)); do + echo "add quota t2 q$i { 10 bytes }" +done >$rulefile +do_test "nft -f $rulefile" \ +'table=t2 family=2 entries=498 op=nft_register_obj' + # changing the quota value triggers obj update path do_test 'nft add quota t1 q1 { 20 bytes }' \ 'table=t1 family=2 entries=1 op=nft_register_obj' @@ -150,6 +162,40 @@ done do_test 'nft reset set t1 s' \ 'table=t1 family=2 entries=3 op=nft_reset_setelem' +# resetting counters + +do_test 'nft reset counter t1 c1' \ +'table=t1 family=2 entries=1 op=nft_reset_obj' + +do_test 'nft reset counters t1' \ +'table=t1 family=2 entries=1 op=nft_reset_obj' + +do_test 'nft reset counters t2' \ +'table=t2 family=2 entries=342 op=nft_reset_obj +table=t2 family=2 entries=158 op=nft_reset_obj' + +do_test 'nft reset counters' \ +'table=t1 family=2 entries=1 op=nft_reset_obj +table=t2 family=2 entries=341 op=nft_reset_obj +table=t2 family=2 entries=159 op=nft_reset_obj' + +# resetting quotas + +do_test 'nft reset quota t1 q1' \ +'table=t1 family=2 entries=1 op=nft_reset_obj' + +do_test 'nft reset quotas t1' \ +'table=t1 family=2 entries=1 op=nft_reset_obj' + +do_test 'nft reset quotas t2' \ +'table=t2 family=2 entries=315 op=nft_reset_obj +table=t2 family=2 entries=185 op=nft_reset_obj' + +do_test 'nft reset quotas' \ +'table=t1 family=2 entries=1 op=nft_reset_obj +table=t2 family=2 entries=314 op=nft_reset_obj +table=t2 family=2 entries=186 op=nft_reset_obj' + # deleting rules readarray -t handles < <(nft -a list chain t1 c1 | \ -- 2.42.0

6 months, 3 weeks

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[PATCH] selftests/cgroup: Fix awk usage in test_cpuset_prs.sh that may cause error

by Juntong Deng

According to the awk manual, the -e option does not need to be specified in front of 'program' (unless you need to mix program-file). The redundant -e option can cause error when users use awk tools other than gawk (for example, mawk does not support the -e option). Error Example: awk: not an option: -e Cgroup v2 mount point not found! Signed-off-by: Juntong Deng <juntong.deng(a)outlook.com> --- tools/testing/selftests/cgroup/test_cpuset_prs.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/cgroup/test_cpuset_prs.sh b/tools/testing/selftests/cgroup/test_cpuset_prs.sh index 4afb132e4e4f..6820653e8432 100755 --- a/tools/testing/selftests/cgroup/test_cpuset_prs.sh +++ b/tools/testing/selftests/cgroup/test_cpuset_prs.sh @@ -20,7 +20,7 @@ skip_test() { WAIT_INOTIFY=$(cd $(dirname $0); pwd)/wait_inotify # Find cgroup v2 mount point -CGROUP2=$(mount -t cgroup2 | head -1 | awk -e '{print $3}') +CGROUP2=$(mount -t cgroup2 | head -1 | awk '{print $3}') [[ -n "$CGROUP2" ]] || skip_test "Cgroup v2 mount point not found!" CPUS=$(lscpu | grep "^CPU(s):" | sed -e "s/.*:[[:space:]]*//") -- 2.39.2

6 months, 3 weeks

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selftests: ftrace: RIP: 0010:__lock_acquire (kernel/locking/lockdep.c:5005)

by Naresh Kamboju

Following kernel crash noticed on x86_64 while running selftests ftracetests running 6.6.0-rc7-next-20231026. Reported-by: Linux Kernel Functional Testing <lkft(a)linaro.org> log: ----- # ok 44 ftrace - test for function traceon/off triggers # ok 45 ftrace - test tracing error log support # ok 46 Test creation and deletion of trace instances while setting an event [ 1402.419605] BUG: kernel NULL pointer dereference, address: 0000000000000097 [ 1402.426574] #PF: supervisor read access in kernel mode [ 1402.431715] #PF: error_code(0x0000) - not-present page [ 1402.436852] PGD 0 P4D 0 [ 1402.439393] Oops: 0000 [#1] PREEMPT SMP PTI [ 1402.443578] CPU: 0 PID: 18196 Comm: ls Not tainted 6.6.0-rc7-next-20231026 #1 [ 1402.450711] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.7 12/07/2021 [ 1402.458102] RIP: 0010:__lock_acquire (kernel/locking/lockdep.c:5005) [ 1402.462722] Code: 4d d4 53 45 85 f6 0f 84 a5 06 00 00 44 8b 2d 8d c2 bf 02 45 89 c2 49 89 fb 89 f3 41 89 d6 45 89 c8 45 85 ed 0f 84 ca 02 00 00 <48> 81 3f c0 2b f1 af 44 0f 44 d0 83 fb 01 0f 86 c2 02 00 00 31 d2 All code ======== 0: 4d d4 rex.WRB (bad) 2: 53 push %rbx 3: 45 85 f6 test %r14d,%r14d 6: 0f 84 a5 06 00 00 je 0x6b1 c: 44 8b 2d 8d c2 bf 02 mov 0x2bfc28d(%rip),%r13d # 0x2bfc2a0 13: 45 89 c2 mov %r8d,%r10d 16: 49 89 fb mov %rdi,%r11 19: 89 f3 mov %esi,%ebx 1b: 41 89 d6 mov %edx,%r14d 1e: 45 89 c8 mov %r9d,%r8d 21: 45 85 ed test %r13d,%r13d 24: 0f 84 ca 02 00 00 je 0x2f4 2a:* 48 81 3f c0 2b f1 af cmpq $0xffffffffaff12bc0,(%rdi) <-- trapping instruction 31: 44 0f 44 d0 cmove %eax,%r10d 35: 83 fb 01 cmp $0x1,%ebx 38: 0f 86 c2 02 00 00 jbe 0x300 3e: 31 d2 xor %edx,%edx Code starting with the faulting instruction =========================================== 0: 48 81 3f c0 2b f1 af cmpq $0xffffffffaff12bc0,(%rdi) 7: 44 0f 44 d0 cmove %eax,%r10d b: 83 fb 01 cmp $0x1,%ebx e: 0f 86 c2 02 00 00 jbe 0x2d6 14: 31 d2 xor %edx,%edx [ 1402.481497] RSP: 0018:ffff9b3041327998 EFLAGS: 00010002 [ 1402.486719] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 1402.493843] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000097 [ 1402.500967] RBP: ffff9b3041327a38 R08: 0000000000000000 R09: 0000000000000000 [ 1402.508092] R10: 0000000000000001 R11: 0000000000000097 R12: ffff8de420f38040 [ 1402.515225] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 1402.522348] FS: 00007f52d72a1d00(0000) GS:ffff8de767a00000(0000) knlGS:0000000000000000 [ 1402.530438] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1402.536224] CR2: 0000000000000097 CR3: 000000012201e005 CR4: 00000000003706f0 [ 1402.543354] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1402.550479] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1402.557602] Call Trace: [ 1402.560049] <TASK> [ 1402.562153] ? show_regs (arch/x86/kernel/dumpstack.c:479) [ 1402.565559] ? __die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434) [ 1402.568611] ? page_fault_oops (arch/x86/mm/fault.c:707) [ 1402.572711] ? __lock_acquire (kernel/locking/lockdep.c:186 kernel/locking/lockdep.c:3872 kernel/locking/lockdep.c:5136) [ 1402.576811] ? do_user_addr_fault (arch/x86/mm/fault.c:1264) [ 1402.581170] ? exc_page_fault (arch/x86/include/asm/irqflags.h:26 arch/x86/include/asm/irqflags.h:67 arch/x86/include/asm/irqflags.h:127 arch/x86/mm/fault.c:1513 arch/x86/mm/fault.c:1561) [ 1402.585094] ? asm_exc_page_fault (arch/x86/include/asm/idtentry.h:570) [ 1402.589283] ? __lock_acquire (kernel/locking/lockdep.c:5005) [ 1402.593296] ? lock_acquire (kernel/locking/lockdep.c:467 (discriminator 4) kernel/locking/lockdep.c:5755 (discriminator 4) kernel/locking/lockdep.c:5718 (discriminator 4)) [ 1402.597045] ? create_dir_dentry.part.0 (fs/tracefs/event_inode.c:357 (discriminator 1)) [ 1402.601928] lock_acquire (kernel/locking/lockdep.c:467 (discriminator 4) kernel/locking/lockdep.c:5755 (discriminator 4) kernel/locking/lockdep.c:5718 (discriminator 4)) [ 1402.605503] ? d_invalidate (fs/dcache.c:1725 (discriminator 1)) [ 1402.609170] ? lock_release (kernel/locking/lockdep.c:5429 kernel/locking/lockdep.c:5773) [ 1402.612923] ? create_dir_dentry.part.0 (fs/tracefs/event_inode.c:387) [ 1402.617803] _raw_spin_lock (include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 1402.621467] ? d_invalidate (fs/dcache.c:1725 (discriminator 1)) [ 1402.625126] d_invalidate (fs/dcache.c:1725 (discriminator 1)) [ 1402.628619] create_dir_dentry.part.0 (fs/tracefs/event_inode.c:390) [ 1402.633324] dcache_dir_open_wrapper (fs/tracefs/event_inode.c:586) [ 1402.637945] ? __pfx_dcache_dir_open_wrapper (fs/tracefs/event_inode.c:536) [ 1402.643081] do_dentry_open (fs/open.c:948) [ 1402.646924] vfs_open (fs/open.c:1083) [ 1402.650069] path_openat (fs/namei.c:3623 fs/namei.c:3779) [ 1402.653648] do_filp_open (fs/namei.c:3810 (discriminator 2)) [ 1402.657233] do_sys_openat2 (fs/open.c:1441 (discriminator 1)) [ 1402.660911] __x64_sys_openat (fs/open.c:1466) [ 1402.664749] do_syscall_64 (arch/x86/entry/common.c:51 arch/x86/entry/common.c:82) [ 1402.668328] ? syscall_exit_to_user_mode (kernel/entry/common.c:299) [ 1402.673120] ? do_syscall_64 (arch/x86/entry/common.c:101) [ 1402.676864] ? do_syscall_64 (arch/x86/entry/common.c:101) [ 1402.680607] ? do_syscall_64 (arch/x86/entry/common.c:101) [ 1402.684352] ? syscall_exit_to_user_mode (kernel/entry/common.c:299) [ 1402.689136] ? do_syscall_64 (arch/x86/entry/common.c:101) [ 1402.692880] ? syscall_exit_to_user_mode (kernel/entry/common.c:299) [ 1402.697666] ? do_syscall_64 (arch/x86/entry/common.c:101) [ 1402.701440] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 1402.706512] RIP: 0033:0x7f52d7439df1 [ 1402.710082] Code: 44 24 18 31 c0 41 83 e2 40 75 3e 89 f0 25 00 00 41 00 3d 00 00 41 00 74 30 89 f2 b8 01 01 00 00 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 77 3f 48 8b 54 24 18 64 48 2b 14 25 28 00 00 00 All code ======== 0: 44 24 18 rex.R and $0x18,%al 3: 31 c0 xor %eax,%eax 5: 41 83 e2 40 and $0x40,%r10d 9: 75 3e jne 0x49 b: 89 f0 mov %esi,%eax d: 25 00 00 41 00 and $0x410000,%eax 12: 3d 00 00 41 00 cmp $0x410000,%eax 17: 74 30 je 0x49 19: 89 f2 mov %esi,%edx 1b: b8 01 01 00 00 mov $0x101,%eax 20: 48 89 fe mov %rdi,%rsi 23: bf 9c ff ff ff mov $0xffffff9c,%edi 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 3f ja 0x71 32: 48 8b 54 24 18 mov 0x18(%rsp),%rdx 37: 64 48 2b 14 25 28 00 sub %fs:0x28,%rdx 3e: 00 00 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 3f ja 0x47 8: 48 8b 54 24 18 mov 0x18(%rsp),%rdx d: 64 48 2b 14 25 28 00 sub %fs:0x28,%rdx 14: 00 00 [ 1402.728821] RSP: 002b:00007fff2270ba90 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 [ 1402.736388] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f52d7439df1 [ 1402.743520] RDX: 0000000000090800 RSI: 0000558fb3992090 RDI: 00000000ffffff9c [ 1402.750651] RBP: 0000000000000000 R08: 0000000000000007 R09: 0000558fb3992250 [ 1402.757775] R10: 0000000000000000 R11: 0000000000000287 R12: 00007f52d72a1b98 [ 1402.764900] R13: 00007fff2270bee0 R14: 0000558fb3992090 R15: 0000558fb28aafc8 [ 1402.772027] </TASK> [ 1402.774216] Modules linked in: x86_pkg_temp_thermal fuse configfs [last unloaded: trace_printk] [ 1402.782908] CR2: 0000000000000097 [ 1402.786220] ---[ end trace 0000000000000000 ]--- [ 1402.790839] RIP: 0010:__lock_acquire (kernel/locking/lockdep.c:5005) [ 1402.795468] Code: 4d d4 53 45 85 f6 0f 84 a5 06 00 00 44 8b 2d 8d c2 bf 02 45 89 c2 49 89 fb 89 f3 41 89 d6 45 89 c8 45 85 ed 0f 84 ca 02 00 00 <48> 81 3f c0 2b f1 af 44 0f 44 d0 83 fb 01 0f 86 c2 02 00 00 31 d2 All code ======== 0: 4d d4 rex.WRB (bad) 2: 53 push %rbx 3: 45 85 f6 test %r14d,%r14d 6: 0f 84 a5 06 00 00 je 0x6b1 c: 44 8b 2d 8d c2 bf 02 mov 0x2bfc28d(%rip),%r13d # 0x2bfc2a0 13: 45 89 c2 mov %r8d,%r10d 16: 49 89 fb mov %rdi,%r11 19: 89 f3 mov %esi,%ebx 1b: 41 89 d6 mov %edx,%r14d 1e: 45 89 c8 mov %r9d,%r8d 21: 45 85 ed test %r13d,%r13d 24: 0f 84 ca 02 00 00 je 0x2f4 2a:* 48 81 3f c0 2b f1 af cmpq $0xffffffffaff12bc0,(%rdi) <-- trapping instruction 31: 44 0f 44 d0 cmove %eax,%r10d 35: 83 fb 01 cmp $0x1,%ebx 38: 0f 86 c2 02 00 00 jbe 0x300 3e: 31 d2 xor %edx,%edx Code starting with the faulting instruction =========================================== 0: 48 81 3f c0 2b f1 af cmpq $0xffffffffaff12bc0,(%rdi) 7: 44 0f 44 d0 cmove %eax,%r10d b: 83 fb 01 cmp $0x1,%ebx e: 0f 86 c2 02 00 00 jbe 0x2d6 14: 31 d2 xor %edx,%edx [ 1402.814213] RSP: 0018:ffff9b3041327998 EFLAGS: 00010002 [ 1402.819439] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 1402.826587] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000097 [ 1402.833711] RBP: ffff9b3041327a38 R08: 0000000000000000 R09: 0000000000000000 [ 1402.840836] R10: 0000000000000001 R11: 0000000000000097 R12: ffff8de420f38040 [ 1402.847959] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 1402.855083] FS: 00007f52d72a1d00(0000) GS:ffff8de767a00000(0000) knlGS:0000000000000000 [ 1402.863161] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1402.868897] CR2: 0000000000000097 CR3: 000000012201e005 CR4: 00000000003706f0 [ 1402.876023] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1402.883154] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1402.890280] Kernel panic - not syncing: Fatal exception [ 1402.895543] Kernel Offset: 0x2b000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1402.906322] ---[ end Kernel panic - not syncing: Fatal exception ]--- Links: - https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20231026/te… - https://lkft.validation.linaro.org/scheduler/job/6974183#L5240 metadata: git_ref: master git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git_sha: 2ef7141596eed0b4b45ef18b3626f428a6b0a822 git_describe: next-20231026 kernel-config: https://storage.tuxsuite.com/public/linaro/lkft/builds/2XHt24sNSdog7DYY3FLK… artifact-location: https://storage.tuxsuite.com/public/linaro/lkft/builds/2XHt24sNSdog7DYY3FLK… toolchain: gcc-13 -- Linaro LKFT https://lkft.linaro.org

6 months, 3 weeks

3
2
0 0

[PATCH bpf-next v3 0/2] selftests/bpf: Replaces CHECK macros and adds malloc failure checks to bpf_iter

by Yuran Pereira

This patch series contains the following updates: - Replaces the usage of all the CHECK macros in bpf_iter to the appropriate ASSERT_* macro calls - Adds appropriate malloc failure checks to bpf_iter Changes in v3: - Modified and removed unnecessary `if` statements as suggested by Kui-Feng [1] Changes in v2: - Removed unused "duration" variable which caused compilation error as reported by Yonghong Song [2] - Improved malloc failure handling as suggested by Kui-Feng Lee [3] - Ensured propper patch formatting (i.e. sending it as a set instead of two distinct patches) [1] https://lore.kernel.org/lkml/3739e65c-b86d-4c11-9cf5-7b76080400c2@gmail.com/ [2] https://lore.kernel.org/lkml/3531360b-c933-4c5f-a84c-17edf0592519@linux.dev/ [3] https://lore.kernel.org/lkml/7d703c4c-1a24-4806-a483-c02efb666059@gmail.com Previous versions: v2 - https://lore.kernel.org/lkml/DB3PR10MB6835598B901975BEAEBA8601E8DDA@DB3PR10… - https://lore.kernel.org/lkml/DB3PR10MB68352B683F26EE9C342B71A9E8DDA@DB3PR10… v1 - https://lore.kernel.org/lkml/DB3PR10MB683589A5F705C6CA5BE0D325E8DFA@DB3PR10… - https://lore.kernel.org/lkml/DB3PR10MB68356D7CDF6005480BE5876CE8DEA@DB3PR10… Yuran Pereira (2): selftests/bpf: Convert CHECK macros to ASSERT_* macros in bpf_iter selftests/bpf: Add malloc failure checks in bpf_iter .../selftests/bpf/prog_tests/bpf_iter.c | 85 +++++++++---------- 1 file changed, 40 insertions(+), 45 deletions(-) -- 2.25.1

6 months, 3 weeks

1
0
0 0

[PATCH] selftests/ftrace: Add test case for a symbol in a module without module name

by Masami Hiramatsu (Google)

From: Masami Hiramatsu (Google) <mhiramat(a)kernel.org> Add a test case for probing on a symbol in a module without module name. When probing on a symbol in a module, ftrace accepts both the syntax that <MODNAME>:<SYMBOL> and <SYMBOL>. Current test case only checks the former syntax. This adds a test for the latter one. Signed-off-by: Masami Hiramatsu (Google) <mhiramat(a)kernel.org> --- .../ftrace/test.d/kprobe/kprobe_module.tc | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc index 7e74ee11edf9..4b32e1b9a8d3 100644 --- a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_module.tc @@ -13,6 +13,12 @@ fi MOD=trace_printk FUNC=trace_printk_irq_work +:;: "Add an event on a module function without module name" ;: + +echo "p:event0 $FUNC" > kprobe_events +test -d events/kprobes/event0 || exit_failure +echo "-:kprobes/event0" >> kprobe_events + :;: "Add an event on a module function without specifying event name" ;: echo "p $MOD:$FUNC" > kprobe_events

6 months, 3 weeks

1
0
0 0

[PATCH bpf-next v2 0/2] selftests/bpf: Replaces CHECK macros and adds malloc failure checks to bpf_iter

by Yuran Pereira

This patch series contains the following updates: - Replaces the usage of all the CHECK macros in bpf_iter to the appropriate ASSERT_* macro calls - Adds appropriate malloc failure checks to bpf_iter Changes in v2: - Removed unused "duration" variable which caused compilation error as reported by Yonghong Song [1] - Improved malloc failure handling as suggested by Kui-Feng Lee [2] - Ensured propper patch formatting (i.e. sending it as a set instead of two distinct patches) [1] https://lore.kernel.org/lkml/3531360b-c933-4c5f-a84c-17edf0592519@linux.dev/ [2] https://lore.kernel.org/lkml/7d703c4c-1a24-4806-a483-c02efb666059@gmail.com Previous version: v1 - https://lore.kernel.org/lkml/DB3PR10MB683589A5F705C6CA5BE0D325E8DFA@DB3PR10… - https://lore.kernel.org/lkml/DB3PR10MB68356D7CDF6005480BE5876CE8DEA@DB3PR10… Yuran Pereira (2): selftests/bpf: Convert CHECK macros to ASSERT_* macros in bpf_iter selftests/bpf: Add malloc failure checks in bpf_iter .../selftests/bpf/prog_tests/bpf_iter.c | 88 +++++++++---------- 1 file changed, 44 insertions(+), 44 deletions(-) -- 2.25.1

6 months, 3 weeks

2
2
0 0

[linux-next:master] [ptp] 403376ddb4: stress-ng.clock.ops_per_sec -12.7% regression

by kernel test robot

Hello, kernel test robot noticed a -12.7% regression of stress-ng.clock.ops_per_sec on: commit: 403376ddb4221be9db5326ae334773807df71ffe ("ptp: add debugfs interface to see applied channel masks") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master testcase: stress-ng test machine: 36 threads 1 sockets Intel(R) Core(TM) i9-10980XE CPU @ 3.00GHz (Cascade Lake) with 128G memory parameters: nr_threads: 1 disk: 1HDD testtime: 60s class: interrupt test: clock cpufreq_governor: performance If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <oliver.sang(a)intel.com> | Closes: https://lore.kernel.org/oe-lkp/202310271441.b9fb0896-oliver.sang@intel.com Details are as below: --------------------------------------------------------------------------------------------------> The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20231027/202310271441.b9fb0896-oliv… ========================================================================================= class/compiler/cpufreq_governor/disk/kconfig/nr_threads/rootfs/tbox_group/test/testcase/testtime: interrupt/gcc-12/performance/1HDD/x86_64-rhel-8.3/1/debian-11.1-x86_64-20220510.cgz/lkp-csl-d02/clock/stress-ng/60s commit: c5a445b1e9 ("ptp: support event queue reader channel masks") 403376ddb4 ("ptp: add debugfs interface to see applied channel masks") c5a445b1e9347b14 403376ddb4221be9db5326ae334 ---------------- --------------------------- %stddev %change %stddev \ | \ 2.50 +8.3% 2.71 iostat.cpu.system 0.05 ± 3% +0.0 0.06 mpstat.cpu.all.soft% 1.84 +0.2 2.04 mpstat.cpu.all.sys% 200469 -10.7% 178950 vmstat.system.cs 135153 -7.8% 124597 vmstat.system.in 2804514 -12.7% 2448917 stress-ng.clock.ops 46741 -12.7% 40815 stress-ng.clock.ops_per_sec 78.00 +2.6% 80.00 stress-ng.time.percent_of_cpu_this_job_got 5606454 -12.7% 4896355 stress-ng.time.voluntary_context_switches 18583 ± 5% +31.1% 24360 ± 9% turbostat.C1 2.90 ± 2% +0.1 3.03 turbostat.C1E% 5353747 -13.0% 4655189 turbostat.POLL 0.28 -0.0 0.24 turbostat.POLL% 10.11 +1.4% 10.25 turbostat.RAMWatt 88825 -6.6% 82944 proc-vmstat.nr_active_anon 11367 +4.6% 11892 proc-vmstat.nr_mapped 96532 -6.6% 90119 proc-vmstat.nr_shmem 19819 +4.1% 20633 proc-vmstat.nr_slab_reclaimable 88825 -6.6% 82944 proc-vmstat.nr_zone_active_anon 420661 +27.6% 536903 ± 35% proc-vmstat.numa_hit 420556 +27.4% 535725 ± 36% proc-vmstat.numa_local 133275 -6.9% 124053 proc-vmstat.pgactivate 488366 ± 2% +60.4% 783374 proc-vmstat.pgalloc_normal 227687 +3.2% 234860 proc-vmstat.pgfault 323139 ± 3% +94.6% 628694 proc-vmstat.pgfree 0.00 ±141% +325.0% 0.01 ± 26% perf-sched.sch_delay.avg.ms.kjournald2.kthread.ret_from_fork.ret_from_fork_asm 0.01 ±217% +455.3% 0.04 ± 68% perf-sched.sch_delay.max.ms.__cond_resched.__kmem_cache_alloc_node.__kmalloc_node.alloc_cpumask_var_node.clock_was_set 0.10 ± 14% +66.8% 0.16 ± 15% perf-sched.sch_delay.max.ms.do_nanosleep.hrtimer_nanosleep.common_nsleep_timens.__x64_sys_clock_nanosleep 0.00 ±141% +325.0% 0.01 ± 26% perf-sched.sch_delay.max.ms.kjournald2.kthread.ret_from_fork.ret_from_fork_asm 0.91 ± 21% -53.8% 0.42 ± 55% perf-sched.sch_delay.max.ms.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm 1.27 +18.7% 1.51 perf-sched.total_wait_and_delay.average.ms 1.27 +18.7% 1.51 perf-sched.total_wait_time.average.ms 18.82 ± 20% +59.4% 29.99 ± 27% perf-sched.wait_and_delay.avg.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write 1278 ± 2% +16.3% 1487 ± 3% perf-sched.wait_and_delay.count.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm 220.33 ± 5% +14.1% 251.33 ± 2% perf-sched.wait_and_delay.count.worker_thread.kthread.ret_from_fork.ret_from_fork_asm 0.20 ± 13% +63.7% 0.33 ± 14% perf-sched.wait_and_delay.max.ms.do_nanosleep.hrtimer_nanosleep.common_nsleep_timens.__x64_sys_clock_nanosleep 18.82 ± 20% +59.4% 29.99 ± 27% perf-sched.wait_time.avg.ms.__cond_resched.generic_perform_write.shmem_file_write_iter.vfs_write.ksys_write 0.01 ±208% +433.3% 0.05 ± 64% perf-sched.wait_time.max.ms.__cond_resched.__kmem_cache_alloc_node.__kmalloc_node.alloc_cpumask_var_node.clock_was_set 0.10 ± 12% +60.7% 0.16 ± 13% perf-sched.wait_time.max.ms.do_nanosleep.hrtimer_nanosleep.common_nsleep_timens.__x64_sys_clock_nanosleep 0.13 +35.1% 0.17 ± 2% perf-stat.i.MPKI 9.417e+08 +4.1% 9.8e+08 perf-stat.i.branch-instructions 4.24 ± 2% +0.6 4.81 ± 2% perf-stat.i.cache-miss-rate% 1107890 +23.8% 1371103 ± 2% perf-stat.i.cache-misses 18969540 +28.6% 24388966 perf-stat.i.cache-references 210406 -11.1% 187069 perf-stat.i.context-switches 1.15 -3.5% 1.11 perf-stat.i.cpi 185.83 ± 2% +7.7% 200.19 ± 4% perf-stat.i.cpu-migrations 56299 ± 6% -64.8% 19830 ± 6% perf-stat.i.cycles-between-cache-misses 1.249e+09 +2.7% 1.283e+09 perf-stat.i.dTLB-loads 0.00 ± 6% +0.0 0.00 ± 4% perf-stat.i.dTLB-store-miss-rate% 7425 ± 5% +12.8% 8373 ± 4% perf-stat.i.dTLB-store-misses 7.573e+08 +2.3% 7.746e+08 perf-stat.i.dTLB-stores 6674913 ± 2% -5.5% 6305796 perf-stat.i.iTLB-load-misses 5.03e+09 +3.1% 5.184e+09 perf-stat.i.instructions 1159 +5.5% 1222 ± 2% perf-stat.i.instructions-per-iTLB-miss 0.89 +3.0% 0.92 perf-stat.i.ipc 536.86 +28.0% 687.18 perf-stat.i.metric.K/sec 81.89 +3.0% 84.38 perf-stat.i.metric.M/sec 2127 +5.2% 2239 ± 2% perf-stat.i.minor-faults 106399 ± 2% +36.0% 144713 ± 3% perf-stat.i.node-loads 106511 ± 5% +71.6% 182771 ± 3% perf-stat.i.node-stores 2127 +5.2% 2239 ± 2% perf-stat.i.page-faults 0.22 +20.1% 0.26 ± 2% perf-stat.overall.MPKI 1.09 -2.6% 1.06 perf-stat.overall.cpi 4955 -18.8% 4021 ± 2% perf-stat.overall.cycles-between-cache-misses 0.00 ± 5% +0.0 0.00 ± 4% perf-stat.overall.dTLB-store-miss-rate% 753.96 +9.1% 822.64 ± 2% perf-stat.overall.instructions-per-iTLB-miss 0.92 +2.7% 0.94 perf-stat.overall.ipc 9.27e+08 +4.1% 9.648e+08 perf-stat.ps.branch-instructions 1090868 +23.8% 1350235 ± 2% perf-stat.ps.cache-misses 18670301 +28.6% 24005580 perf-stat.ps.cache-references 207054 -11.1% 184104 perf-stat.ps.context-switches 182.86 ± 2% +7.7% 197.01 ± 4% perf-stat.ps.cpu-migrations 1.229e+09 +2.7% 1.263e+09 perf-stat.ps.dTLB-loads 7309 ± 5% +12.8% 8244 ± 4% perf-stat.ps.dTLB-store-misses 7.454e+08 +2.3% 7.624e+08 perf-stat.ps.dTLB-stores 6568626 ± 2% -5.5% 6205894 perf-stat.ps.iTLB-load-misses 4.951e+09 +3.1% 5.103e+09 perf-stat.ps.instructions 2094 +5.2% 2204 ± 2% perf-stat.ps.minor-faults 104758 ± 2% +36.0% 142499 ± 3% perf-stat.ps.node-loads 104880 ± 5% +71.6% 179969 ± 3% perf-stat.ps.node-stores 2094 +5.2% 2204 ± 2% perf-stat.ps.page-faults 3.124e+11 +3.9% 3.245e+11 perf-stat.total.instructions 9.42 ± 5% -2.2 7.20 ± 8% perf-profile.calltrace.cycles-pp.clock_gettime 9.26 ± 5% -2.2 7.08 ± 8% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.clock_gettime 9.24 ± 5% -2.2 7.07 ± 8% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.clock_gettime 8.84 ± 5% -2.2 6.67 ± 9% perf-profile.calltrace.cycles-pp.e1000e_read_systim.e1000e_phc_gettimex.pc_clock_gettime.__x64_sys_clock_gettime.do_syscall_64 9.20 ± 5% -2.2 7.04 ± 8% perf-profile.calltrace.cycles-pp.__x64_sys_clock_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe.clock_gettime 8.96 ± 5% -2.2 6.81 ± 8% perf-profile.calltrace.cycles-pp.e1000e_phc_gettimex.pc_clock_gettime.__x64_sys_clock_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe 9.12 ± 5% -2.1 6.98 ± 8% perf-profile.calltrace.cycles-pp.pc_clock_gettime.__x64_sys_clock_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe.clock_gettime 10.96 ± 2% -2.0 8.98 ± 8% perf-profile.calltrace.cycles-pp.syscall 10.98 ± 3% -1.7 9.28 ± 9% perf-profile.calltrace.cycles-pp.clock_adjtime 10.09 ± 3% -1.5 8.55 ± 10% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.clock_adjtime 9.94 ± 3% -1.5 8.42 ± 10% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.clock_adjtime 9.68 ± 3% -1.5 8.20 ± 10% perf-profile.calltrace.cycles-pp.__do_sys_clock_adjtime.do_syscall_64.entry_SYSCALL_64_after_hwframe.clock_adjtime 8.53 ± 4% -1.3 7.22 ± 9% perf-profile.calltrace.cycles-pp.do_adjtimex.__do_sys_clock_adjtime.do_syscall_64.entry_SYSCALL_64_after_hwframe.clock_adjtime 6.44 ± 5% -1.2 5.20 ± 10% perf-profile.calltrace.cycles-pp.poll_idle.cpuidle_enter_state.cpuidle_enter.cpuidle_idle_call.do_idle 6.22 ± 4% -1.1 5.12 ± 11% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.syscall 5.59 ± 3% -1.0 4.59 ± 11% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.syscall 6.42 ± 3% -0.9 5.51 ± 10% perf-profile.calltrace.cycles-pp.timekeeping_inject_offset.do_adjtimex.__do_sys_clock_adjtime.do_syscall_64.entry_SYSCALL_64_after_hwframe 5.86 ± 3% -0.9 5.00 ± 9% perf-profile.calltrace.cycles-pp.clock_was_set.timekeeping_inject_offset.do_adjtimex.__do_sys_clock_adjtime.do_syscall_64 3.34 ± 5% -0.7 2.68 ± 11% perf-profile.calltrace.cycles-pp.__x64_sys_clock_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe.syscall 2.99 ± 9% -0.6 2.34 ± 14% perf-profile.calltrace.cycles-pp.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.poll_idle.cpuidle_enter_state.cpuidle_enter 2.47 ± 13% -0.5 1.94 ± 15% perf-profile.calltrace.cycles-pp.__sysvec_apic_timer_interrupt.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt.poll_idle.cpuidle_enter_state 3.31 ± 3% -0.5 2.83 ± 8% perf-profile.calltrace.cycles-pp._raw_spin_lock_irqsave.clock_was_set.timekeeping_inject_offset.do_adjtimex.__do_sys_clock_adjtime 2.78 ± 3% -0.4 2.42 ± 10% perf-profile.calltrace.cycles-pp.timer_create 2.37 ± 3% -0.3 2.07 ± 10% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.timer_create 2.33 ± 3% -0.3 2.03 ± 10% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.timer_create 1.64 ± 3% -0.3 1.36 ± 10% perf-profile.calltrace.cycles-pp.add_device_randomness.do_adjtimex.__do_sys_clock_adjtime.do_syscall_64.entry_SYSCALL_64_after_hwframe 1.43 ± 3% -0.3 1.16 ± 11% perf-profile.calltrace.cycles-pp.blake2s_compress.blake2s_update.add_device_randomness.do_adjtimex.__do_sys_clock_adjtime 1.52 ± 3% -0.3 1.26 ± 11% perf-profile.calltrace.cycles-pp.blake2s_update.add_device_randomness.do_adjtimex.__do_sys_clock_adjtime.do_syscall_64 1.23 ± 8% -0.2 0.99 ± 12% perf-profile.calltrace.cycles-pp.posix_cpu_clock_get.__x64_sys_clock_gettime.do_syscall_64.entry_SYSCALL_64_after_hwframe.syscall 1.02 ± 5% -0.1 0.88 ± 12% perf-profile.calltrace.cycles-pp.read_tsc.ktime_get_update_offsets_now.clock_was_set.timekeeping_inject_offset.do_adjtimex 0.74 ± 4% -0.1 0.61 ± 13% perf-profile.calltrace.cycles-pp.ttwu_do_activate.try_to_wake_up.hrtimer_wakeup.__hrtimer_run_queues.hrtimer_interrupt 0.47 ± 45% +0.4 0.90 ± 17% perf-profile.calltrace.cycles-pp.smpboot_thread_fn.kthread.ret_from_fork.ret_from_fork_asm 0.00 +0.7 0.69 ± 10% perf-profile.calltrace.cycles-pp.lookup_one_len.start_creating.__debugfs_create_file.ptp_open.posix_clock_open 0.00 +0.7 0.72 ± 12% perf-profile.calltrace.cycles-pp.dput.simple_recursive_removal.debugfs_remove.ptp_release.posix_clock_release 0.00 +0.7 0.75 ± 14% perf-profile.calltrace.cycles-pp.lookup_one_len.start_creating.debugfs_create_dir.ptp_open.posix_clock_open 0.00 +0.8 0.75 ± 12% perf-profile.calltrace.cycles-pp.start_creating.__debugfs_create_file.ptp_open.posix_clock_open.chrdev_open 0.00 +0.9 0.86 ± 15% perf-profile.calltrace.cycles-pp.start_creating.debugfs_create_dir.ptp_open.posix_clock_open.chrdev_open 0.00 +0.9 0.91 ± 14% perf-profile.calltrace.cycles-pp.mnt_get_count.mntput_no_expire.simple_recursive_removal.debugfs_remove.ptp_release 0.00 +1.0 1.05 ± 13% perf-profile.calltrace.cycles-pp.mntput_no_expire.simple_recursive_removal.debugfs_remove.ptp_release.posix_clock_release 0.00 +1.3 1.26 ± 12% perf-profile.calltrace.cycles-pp.__debugfs_create_file.ptp_open.posix_clock_open.chrdev_open.do_dentry_open 0.00 +1.5 1.47 ± 13% perf-profile.calltrace.cycles-pp.debugfs_create_dir.ptp_open.posix_clock_open.chrdev_open.do_dentry_open 0.00 +2.4 2.42 ± 11% perf-profile.calltrace.cycles-pp.simple_recursive_removal.debugfs_remove.ptp_release.posix_clock_release.__fput 0.00 +3.0 2.95 ± 11% perf-profile.calltrace.cycles-pp.debugfs_remove.ptp_release.posix_clock_release.__fput.__x64_sys_close 1.74 ± 5% +3.0 4.71 ± 8% perf-profile.calltrace.cycles-pp.do_dentry_open.do_open.path_openat.do_filp_open.do_sys_openat2 2.90 ± 6% +3.0 5.87 ± 9% perf-profile.calltrace.cycles-pp.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat.do_syscall_64 1.35 ± 6% +3.0 4.33 ± 8% perf-profile.calltrace.cycles-pp.posix_clock_open.chrdev_open.do_dentry_open.do_open.path_openat 1.42 ± 6% +3.0 4.41 ± 8% perf-profile.calltrace.cycles-pp.chrdev_open.do_dentry_open.do_open.path_openat.do_filp_open 2.02 ± 5% +3.0 5.01 ± 8% perf-profile.calltrace.cycles-pp.do_open.path_openat.do_filp_open.do_sys_openat2.__x64_sys_openat 2.95 ± 6% +3.0 5.95 ± 9% perf-profile.calltrace.cycles-pp.do_filp_open.do_sys_openat2.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe 3.51 ± 6% +3.0 6.51 ± 9% perf-profile.calltrace.cycles-pp.do_sys_openat2.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64 3.54 ± 6% +3.0 6.55 ± 9% perf-profile.calltrace.cycles-pp.__x64_sys_openat.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64 1.18 ± 6% +3.0 4.21 ± 8% perf-profile.calltrace.cycles-pp.ptp_open.posix_clock_open.chrdev_open.do_dentry_open.do_open 3.57 ± 6% +3.0 6.61 ± 9% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.open64 3.75 ± 6% +3.1 6.82 ± 10% perf-profile.calltrace.cycles-pp.open64 3.58 ± 6% +3.1 6.66 ± 10% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.open64 0.93 ± 11% +3.2 4.16 ± 11% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.__close 0.90 ± 11% +3.2 4.13 ± 11% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.__close 0.87 ± 11% +3.2 4.10 ± 12% perf-profile.calltrace.cycles-pp.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe.__close 1.06 ± 8% +3.2 4.30 ± 11% perf-profile.calltrace.cycles-pp.__close 0.51 ± 45% +3.4 3.91 ± 12% perf-profile.calltrace.cycles-pp.__fput.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe.__close 0.00 +3.6 3.59 ± 11% perf-profile.calltrace.cycles-pp.ptp_release.posix_clock_release.__fput.__x64_sys_close.do_syscall_64 0.00 +3.7 3.68 ± 11% perf-profile.calltrace.cycles-pp.posix_clock_release.__fput.__x64_sys_close.do_syscall_64.entry_SYSCALL_64_after_hwframe 12.58 ± 4% -2.8 9.74 ± 9% perf-profile.children.cycles-pp.__x64_sys_clock_gettime 9.42 ± 5% -2.2 7.20 ± 8% perf-profile.children.cycles-pp.clock_gettime 8.84 ± 5% -2.2 6.67 ± 9% perf-profile.children.cycles-pp.e1000e_read_systim 8.97 ± 5% -2.2 6.81 ± 8% perf-profile.children.cycles-pp.e1000e_phc_gettimex 9.12 ± 5% -2.1 6.98 ± 8% perf-profile.children.cycles-pp.pc_clock_gettime 10.92 ± 3% -1.8 9.07 ± 8% perf-profile.children.cycles-pp.syscall 11.24 ± 3% -1.7 9.51 ± 10% perf-profile.children.cycles-pp.clock_adjtime 9.69 ± 3% -1.5 8.21 ± 10% perf-profile.children.cycles-pp.__do_sys_clock_adjtime 7.19 ± 4% -1.4 5.80 ± 10% perf-profile.children.cycles-pp.poll_idle 8.53 ± 4% -1.3 7.22 ± 9% perf-profile.children.cycles-pp.do_adjtimex 6.42 ± 3% -0.9 5.51 ± 10% perf-profile.children.cycles-pp.timekeeping_inject_offset 5.93 ± 3% -0.9 5.06 ± 9% perf-profile.children.cycles-pp.clock_was_set 4.47 ± 3% -0.5 3.98 ± 7% perf-profile.children.cycles-pp._raw_spin_lock_irqsave 2.37 ± 3% -0.4 1.95 ± 9% perf-profile.children.cycles-pp.entry_SYSRETQ_unsafe_stack 2.88 ± 2% -0.4 2.50 ± 10% perf-profile.children.cycles-pp.timer_create 2.08 ± 3% -0.3 1.74 ± 9% perf-profile.children.cycles-pp.read_tsc 1.65 ± 3% -0.3 1.37 ± 11% perf-profile.children.cycles-pp.add_device_randomness 1.43 ± 3% -0.3 1.16 ± 11% perf-profile.children.cycles-pp.blake2s_compress 1.53 ± 3% -0.3 1.26 ± 11% perf-profile.children.cycles-pp.blake2s_update 1.74 ± 5% -0.3 1.48 ± 8% perf-profile.children.cycles-pp.hrtimer_wakeup 1.24 ± 8% -0.2 1.00 ± 12% perf-profile.children.cycles-pp.posix_cpu_clock_get 1.70 ± 5% -0.2 1.46 ± 8% perf-profile.children.cycles-pp.try_to_wake_up 1.81 ± 6% -0.2 1.59 ± 11% perf-profile.children.cycles-pp.ktime_get_update_offsets_now 1.14 ± 3% -0.2 0.96 ± 10% perf-profile.children.cycles-pp.ttwu_do_activate 0.91 ± 3% -0.2 0.73 ± 13% perf-profile.children.cycles-pp.rep_movs_alternative 1.20 ± 6% -0.2 1.02 ± 9% perf-profile.children.cycles-pp.lapic_next_deadline 1.04 ± 4% -0.2 0.87 ± 13% perf-profile.children.cycles-pp.hrtimer_start_range_ns 1.00 ± 4% -0.1 0.86 ± 10% perf-profile.children.cycles-pp.activate_task 0.96 ± 5% -0.1 0.83 ± 10% perf-profile.children.cycles-pp.syscall_exit_to_user_mode 0.46 ± 7% -0.1 0.33 ± 15% perf-profile.children.cycles-pp._raw_spin_unlock_irqrestore 0.54 ± 8% -0.1 0.42 ± 16% perf-profile.children.cycles-pp.clockevents_program_min_delta 1.04 ± 4% -0.1 0.94 ± 6% perf-profile.children.cycles-pp.memset_orig 0.52 ± 8% -0.1 0.42 ± 10% perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack 0.22 ± 17% -0.1 0.14 ± 34% perf-profile.children.cycles-pp.posix_get_monotonic_timespec 0.22 ± 20% -0.1 0.14 ± 20% perf-profile.children.cycles-pp.ktime_get_real_ts64 0.11 ± 20% -0.1 0.05 ± 51% perf-profile.children.cycles-pp.__cgroup_account_cputime 0.22 ± 9% -0.1 0.16 ± 16% perf-profile.children.cycles-pp.posix_get_boottime_timespec 0.12 ± 7% -0.0 0.08 ± 27% perf-profile.children.cycles-pp.update_curr_fair 0.06 ± 46% +0.0 0.10 ± 25% perf-profile.children.cycles-pp.memcpy_orig 0.01 ±223% +0.1 0.07 ± 21% perf-profile.children.cycles-pp.rcu_nocb_try_bypass 0.00 +0.1 0.06 ± 14% perf-profile.children.cycles-pp.default_pointer 0.00 +0.1 0.07 ± 15% perf-profile.children.cycles-pp.__srcu_read_unlock 0.00 +0.1 0.08 ± 32% perf-profile.children.cycles-pp.iput 0.00 +0.1 0.08 ± 23% perf-profile.children.cycles-pp.lookup_one_common 0.00 +0.1 0.09 ± 18% perf-profile.children.cycles-pp.inode_init_once 0.00 +0.1 0.09 ± 22% perf-profile.children.cycles-pp.__srcu_read_lock 0.00 +0.1 0.09 ± 26% perf-profile.children.cycles-pp.up_write 0.00 +0.1 0.09 ± 20% perf-profile.children.cycles-pp.__d_lookup 0.00 +0.1 0.10 ± 19% perf-profile.children.cycles-pp.setup_object 0.14 ± 20% +0.1 0.24 ± 13% perf-profile.children.cycles-pp.get_obj_cgroup_from_current 0.00 +0.1 0.10 ± 27% perf-profile.children.cycles-pp.shrink_dcache_parent 0.02 ±142% +0.1 0.12 ± 9% perf-profile.children.cycles-pp.lockref_put_or_lock 0.00 +0.1 0.10 ± 20% perf-profile.children.cycles-pp.d_lookup 0.00 +0.1 0.10 ± 18% perf-profile.children.cycles-pp.__wake_up_common_lock 0.00 +0.1 0.11 ± 17% perf-profile.children.cycles-pp.lookup_dcache 0.00 +0.1 0.11 ± 22% perf-profile.children.cycles-pp.shuffle_freelist 0.00 +0.1 0.12 ± 17% perf-profile.children.cycles-pp.d_instantiate 0.00 +0.1 0.12 ± 24% perf-profile.children.cycles-pp.down_write 0.10 ± 36% +0.1 0.23 ± 29% perf-profile.children.cycles-pp.obj_cgroup_charge 0.00 +0.1 0.14 ± 24% perf-profile.children.cycles-pp.allocate_slab 0.00 +0.1 0.14 ± 36% perf-profile.children.cycles-pp.memcg_list_lru_alloc 0.00 +0.1 0.14 ± 34% perf-profile.children.cycles-pp.d_walk 0.00 +0.1 0.14 ± 5% perf-profile.children.cycles-pp.number 0.00 +0.2 0.16 ± 16% perf-profile.children.cycles-pp.__destroy_inode 0.00 +0.2 0.16 ± 16% perf-profile.children.cycles-pp.dentry_unlink_inode 0.10 ± 26% +0.2 0.26 ± 18% perf-profile.children.cycles-pp.___slab_alloc 0.00 +0.2 0.17 ± 17% perf-profile.children.cycles-pp.destroy_inode 0.00 +0.2 0.18 ± 13% perf-profile.children.cycles-pp.fsnotify_grab_connector 0.27 ± 20% +0.2 0.44 ± 12% perf-profile.children.cycles-pp.__call_rcu_common 0.34 ± 14% +0.2 0.52 ± 15% perf-profile.children.cycles-pp.mod_objcg_state 0.00 +0.2 0.19 ± 8% perf-profile.children.cycles-pp.inode_init_always 0.00 +0.2 0.22 ± 15% perf-profile.children.cycles-pp.fsnotify_destroy_marks 0.40 ± 12% +0.3 0.66 ± 18% perf-profile.children.cycles-pp.memcg_slab_post_alloc_hook 0.00 +0.3 0.26 ± 22% perf-profile.children.cycles-pp.d_invalidate 0.00 +0.3 0.28 ± 10% perf-profile.children.cycles-pp.__d_add 0.00 +0.3 0.30 ± 11% perf-profile.children.cycles-pp.simple_lookup 0.00 +0.3 0.32 ± 15% perf-profile.children.cycles-pp.evict 0.55 ± 9% +0.4 0.90 ± 17% perf-profile.children.cycles-pp.smpboot_thread_fn 0.14 ± 24% +0.4 0.50 ± 15% perf-profile.children.cycles-pp._find_next_bit 0.00 +0.4 0.37 ± 11% perf-profile.children.cycles-pp.sprintf 0.00 +0.4 0.37 ± 11% perf-profile.children.cycles-pp.vsnprintf 0.00 +0.4 0.43 ± 15% perf-profile.children.cycles-pp.slab_pre_alloc_hook 0.00 +0.6 0.58 ± 12% perf-profile.children.cycles-pp.__d_alloc 1.69 ± 7% +0.6 2.30 ± 14% perf-profile.children.cycles-pp.__do_softirq 1.15 ± 4% +0.6 1.80 ± 17% perf-profile.children.cycles-pp.rcu_do_batch 1.26 ± 4% +0.6 1.91 ± 15% perf-profile.children.cycles-pp.rcu_core 0.00 +0.7 0.70 ± 14% perf-profile.children.cycles-pp.alloc_inode 0.00 +0.8 0.76 ± 10% perf-profile.children.cycles-pp.d_alloc 0.00 +0.8 0.84 ± 11% perf-profile.children.cycles-pp.d_alloc_parallel 0.59 ± 6% +0.9 1.46 ± 5% perf-profile.children.cycles-pp._raw_spin_lock 0.00 +0.9 0.91 ± 11% perf-profile.children.cycles-pp.new_inode 0.00 +1.0 1.01 ± 15% perf-profile.children.cycles-pp.kmem_cache_alloc_lru 0.00 +1.0 1.05 ± 11% perf-profile.children.cycles-pp.__dentry_kill 0.00 +1.1 1.10 ± 11% perf-profile.children.cycles-pp.dentry_kill 0.00 +1.2 1.16 ± 11% perf-profile.children.cycles-pp.__lookup_slow 0.10 ± 30% +1.2 1.31 ± 10% perf-profile.children.cycles-pp.dput 0.00 +1.3 1.26 ± 12% perf-profile.children.cycles-pp.__debugfs_create_file 0.00 +1.4 1.44 ± 13% perf-profile.children.cycles-pp.mnt_get_count 0.00 +1.4 1.44 ± 11% perf-profile.children.cycles-pp.lookup_one_len 0.00 +1.5 1.47 ± 13% perf-profile.children.cycles-pp.debugfs_create_dir 0.01 ±223% +1.6 1.60 ± 13% perf-profile.children.cycles-pp.mntput_no_expire 0.00 +1.6 1.61 ± 11% perf-profile.children.cycles-pp.start_creating 0.00 +2.4 2.43 ± 12% perf-profile.children.cycles-pp.simple_recursive_removal 0.00 +3.0 2.96 ± 11% perf-profile.children.cycles-pp.debugfs_remove 1.75 ± 5% +3.0 4.71 ± 8% perf-profile.children.cycles-pp.do_dentry_open 1.35 ± 6% +3.0 4.33 ± 8% perf-profile.children.cycles-pp.posix_clock_open 2.93 ± 5% +3.0 5.91 ± 9% perf-profile.children.cycles-pp.path_openat 1.42 ± 6% +3.0 4.41 ± 8% perf-profile.children.cycles-pp.chrdev_open 2.03 ± 5% +3.0 5.02 ± 8% perf-profile.children.cycles-pp.do_open 2.97 ± 6% +3.0 5.98 ± 9% perf-profile.children.cycles-pp.do_filp_open 3.54 ± 6% +3.0 6.56 ± 9% perf-profile.children.cycles-pp.do_sys_openat2 3.57 ± 6% +3.0 6.59 ± 9% perf-profile.children.cycles-pp.__x64_sys_openat 1.18 ± 6% +3.0 4.22 ± 8% perf-profile.children.cycles-pp.ptp_open 3.79 ± 6% +3.1 6.84 ± 10% perf-profile.children.cycles-pp.open64 0.87 ± 11% +3.2 4.10 ± 12% perf-profile.children.cycles-pp.__x64_sys_close 1.09 ± 9% +3.2 4.34 ± 11% perf-profile.children.cycles-pp.__close 0.59 ± 11% +3.3 3.92 ± 12% perf-profile.children.cycles-pp.__fput 0.31 ± 19% +3.4 3.68 ± 11% perf-profile.children.cycles-pp.posix_clock_release 0.18 ± 15% +3.4 3.59 ± 11% perf-profile.children.cycles-pp.ptp_release 8.84 ± 5% -2.2 6.67 ± 9% perf-profile.self.cycles-pp.e1000e_read_systim 3.55 ± 7% -0.8 2.72 ± 14% perf-profile.self.cycles-pp.poll_idle 4.42 ± 3% -0.5 3.92 ± 7% perf-profile.self.cycles-pp._raw_spin_lock_irqsave 2.32 ± 4% -0.4 1.90 ± 9% perf-profile.self.cycles-pp.entry_SYSRETQ_unsafe_stack 2.01 ± 3% -0.3 1.70 ± 8% perf-profile.self.cycles-pp.read_tsc 1.78 ± 5% -0.3 1.50 ± 9% perf-profile.self.cycles-pp.syscall 1.43 ± 3% -0.3 1.16 ± 11% perf-profile.self.cycles-pp.blake2s_compress 1.08 ± 5% -0.2 0.88 ± 15% perf-profile.self.cycles-pp._copy_to_user 1.20 ± 6% -0.2 1.02 ± 9% perf-profile.self.cycles-pp.lapic_next_deadline 0.56 ± 4% -0.1 0.44 ± 17% perf-profile.self.cycles-pp.rep_movs_alternative 0.42 ± 8% -0.1 0.30 ± 16% perf-profile.self.cycles-pp._raw_spin_unlock_irqrestore 0.52 ± 8% -0.1 0.42 ± 10% perf-profile.self.cycles-pp.entry_SYSCALL_64_safe_stack 0.38 ± 10% -0.1 0.30 ± 19% perf-profile.self.cycles-pp.syscall_enter_from_user_mode 0.44 ± 9% -0.1 0.36 ± 9% perf-profile.self.cycles-pp.__schedule 0.28 ± 14% -0.1 0.20 ± 10% perf-profile.self.cycles-pp.exit_to_user_mode_prepare 0.09 ± 29% -0.1 0.04 ± 72% perf-profile.self.cycles-pp.do_adjtimex 0.21 ± 13% -0.0 0.16 ± 10% perf-profile.self.cycles-pp.__update_load_avg_se 0.12 ± 8% -0.0 0.08 ± 22% perf-profile.self.cycles-pp.update_curr_fair 0.13 ± 20% -0.0 0.10 ± 10% perf-profile.self.cycles-pp.apparmor_capable 0.06 ± 50% +0.0 0.10 ± 16% perf-profile.self.cycles-pp.get_obj_cgroup_from_current 0.02 ±144% +0.1 0.07 ± 17% perf-profile.self.cycles-pp.do_filp_open 0.17 ± 16% +0.1 0.23 ± 12% perf-profile.self.cycles-pp.put_timespec64 0.02 ±141% +0.1 0.08 ± 27% perf-profile.self.cycles-pp.___slab_alloc 0.00 +0.1 0.07 ± 15% perf-profile.self.cycles-pp.__srcu_read_unlock 0.02 ±141% +0.1 0.09 ± 24% perf-profile.self.cycles-pp.lockref_put_or_lock 0.44 ± 9% +0.1 0.52 ± 9% perf-profile.self.cycles-pp.kmem_cache_free 0.00 +0.1 0.09 ± 21% perf-profile.self.cycles-pp.inode_init_once 0.00 +0.1 0.09 ± 21% perf-profile.self.cycles-pp.__srcu_read_lock 0.00 +0.1 0.09 ± 25% perf-profile.self.cycles-pp.up_write 0.00 +0.1 0.09 ± 21% perf-profile.self.cycles-pp.__d_lookup 0.00 +0.1 0.09 ± 26% perf-profile.self.cycles-pp.down_write 0.00 +0.1 0.09 ± 27% perf-profile.self.cycles-pp.slab_pre_alloc_hook 0.01 ±223% +0.1 0.11 ± 51% perf-profile.self.cycles-pp.mntput_no_expire 0.00 +0.1 0.11 ± 9% perf-profile.self.cycles-pp.kmem_cache_alloc_lru 0.00 +0.1 0.12 ± 12% perf-profile.self.cycles-pp.inode_init_always 0.00 +0.1 0.14 ± 5% perf-profile.self.cycles-pp.number 0.26 ± 19% +0.2 0.44 ± 18% perf-profile.self.cycles-pp.memcg_slab_post_alloc_hook 0.11 ± 29% +0.3 0.39 ± 18% perf-profile.self.cycles-pp._find_next_bit 0.58 ± 7% +0.8 1.42 ± 5% perf-profile.self.cycles-pp._raw_spin_lock 0.00 +1.1 1.14 ± 14% perf-profile.self.cycles-pp.mnt_get_count Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

6 months, 3 weeks

2
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[syzbot] [iommu?] divide error in iommufd_test

by syzbot

Hello, syzbot found the following issue on: HEAD commit: e8361b005d7c Add linux-next specific files for 20231023 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=13e4cb83680000 kernel config: https://syzkaller.appspot.com/x/.config?x=75e8fc3570ec9a74 dashboard link: https://syzkaller.appspot.com/bug?extid=25dc7383c30ecdc83c38 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=119bad5d680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1062e393680000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/e28a7944599e/disk-e8361b00.raw… vmlinux: https://storage.googleapis.com/syzbot-assets/7dd355dbe055/vmlinux-e8361b00.… kernel image: https://storage.googleapis.com/syzbot-assets/7b2a9050635d/bzImage-e8361b00.… The issue was bisected to: commit 5e054083ce6929b567c6aadbf8bf627b0f028353 Author: Joao Martins <joao.m.martins(a)oracle.com> Date: Fri Oct 20 22:28:02 2023 +0000 iommufd/selftest: Test IOMMU_HWPT_GET_DIRTY_BITMAP bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14a49a35680000 final oops: https://syzkaller.appspot.com/x/report.txt?x=16a49a35680000 console output: https://syzkaller.appspot.com/x/log.txt?x=12a49a35680000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+25dc7383c30ecdc83c38(a)syzkaller.appspotmail.com Fixes: 5e054083ce69 ("iommufd/selftest: Test IOMMU_HWPT_GET_DIRTY_BITMAP") divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5053 Comm: syz-executor178 Not tainted 6.6.0-rc6-next-20231023-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 RIP: 0010:iommufd_test_dirty drivers/iommu/iommufd/selftest.c:1098 [inline] RIP: 0010:iommufd_test+0x1fd/0x35c0 drivers/iommu/iommufd/selftest.c:1203 Code: 04 02 48 89 4c 24 28 84 c0 74 09 3c 03 7f 05 e8 69 ac 2f fd 48 8b 04 24 31 d2 31 ff 48 8b 5c 24 20 44 8b 68 08 48 8b 44 24 28 <48> f7 f3 48 89 d5 48 89 d6 e8 85 cf d8 fc 48 85 ed 0f 85 ce 22 00 RSP: 0018:ffffc90003937cb0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff84affaf2 RDI: 0000000000000000 RBP: 000000000000000d R08: 0000000000000005 R09: 000000000000000d R10: 000000000000000d R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffc90003937e40 R15: ffffc90003937e00 FS: 00005555560d7380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020006000 CR3: 0000000075a85000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> iommufd_fops_ioctl+0x35a/0x4e0 drivers/iommu/iommufd/main.c:404 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a RIP: 0033:0x7f5fb02172e9 Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd74d26068 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffd74d26238 RCX: 00007f5fb02172e9 RDX: 0000000020000140 RSI: 0000000000003ba0 RDI: 0000000000000003 RBP: 00007f5fb028a610 R08: 0000000000000000 R09: 00007ffd74d26238 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffd74d26228 R14: 0000000000000001 R15: 0000000000000001 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:iommufd_test_dirty drivers/iommu/iommufd/selftest.c:1098 [inline] RIP: 0010:iommufd_test+0x1fd/0x35c0 drivers/iommu/iommufd/selftest.c:1203 Code: 04 02 48 89 4c 24 28 84 c0 74 09 3c 03 7f 05 e8 69 ac 2f fd 48 8b 04 24 31 d2 31 ff 48 8b 5c 24 20 44 8b 68 08 48 8b 44 24 28 <48> f7 f3 48 89 d5 48 89 d6 e8 85 cf d8 fc 48 85 ed 0f 85 ce 22 00 RSP: 0018:ffffc90003937cb0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff84affaf2 RDI: 0000000000000000 RBP: 000000000000000d R08: 0000000000000005 R09: 000000000000000d R10: 000000000000000d R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffc90003937e40 R15: ffffc90003937e00 FS: 00005555560d7380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020006000 CR3: 0000000075a85000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 04 02 add $0x2,%al 2: 48 89 4c 24 28 mov %rcx,0x28(%rsp) 7: 84 c0 test %al,%al 9: 74 09 je 0x14 b: 3c 03 cmp $0x3,%al d: 7f 05 jg 0x14 f: e8 69 ac 2f fd call 0xfd2fac7d 14: 48 8b 04 24 mov (%rsp),%rax 18: 31 d2 xor %edx,%edx 1a: 31 ff xor %edi,%edi 1c: 48 8b 5c 24 20 mov 0x20(%rsp),%rbx 21: 44 8b 68 08 mov 0x8(%rax),%r13d 25: 48 8b 44 24 28 mov 0x28(%rsp),%rax * 2a: 48 f7 f3 div %rbx <-- trapping instruction 2d: 48 89 d5 mov %rdx,%rbp 30: 48 89 d6 mov %rdx,%rsi 33: e8 85 cf d8 fc call 0xfcd8cfbd 38: 48 85 ed test %rbp,%rbp 3b: 0f .byte 0xf 3c: 85 ce test %ecx,%esi 3e: 22 00 and (%rax),%al --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller(a)googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup

6 months, 3 weeks

2
1
0 0

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Linux-kselftest-mirror October 2023