Linux-stable-mirror November 2023

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Fwd: WARNING: CPU: 13 PID: 3837105 at kernel/sched/sched.h:1561 __cfsb_csd_unthrottle+0x149/0x160

by Bagas Sanjaya

Hi, I notice a regression report on Bugzilla [1]. Quoting from it: > Hello, we recently got a few kernel crashes with following backtrace. Happened on 6.4.12 (and 6.4.11 I think) but did not happen (I think) on 6.4.4. > > [293790.928007] ------------[ cut here ]------------ > [293790.929905] rq->clock_update_flags & RQCF_ACT_SKIP > [293790.929919] WARNING: CPU: 13 PID: 3837105 at kernel/sched/sched.h:1561 __cfsb_csd_unthrottle+0x149/0x160 > [293790.933694] Modules linked in: xt_owner(E) xt_REDIRECT(E) mptcp_diag(E) xsk_diag(E) raw_diag(E) unix_diag(E) af_packet_diag(E) netlink_diag(E) tcp_diag(E) udp_diag(E) inet_diag(E) rpcsec_gss_krb5(E) auth_rpcgss(E) nfsv4(E) nfs(E) lockd(E) grace(E) fscache(E) netfs(E) nbd(E) rbd(E) libceph(E) dns_resolver(E) xt_set(E) ipt_rpfilter(E) ip_set_hash_ip(E) ip_set_hash_net(E) bpf_preload(E) xt_multiport(E) veth(E) wireguard(E) libchacha20poly1305(E) chacha_x86_64(E) poly1305_x86_64(E) ip6_udp_tunnel(E) udp_tunnel(E) curve25519_x86_64(E) libcurve25519_generic(E) libchacha(E) nf_conntrack_netlink(E) xt_nat(E) xt_statistic(E) xt_addrtype(E) ipt_REJECT(E) nf_reject_ipv4(E) ip_set(E) ip_vs_sh(E) ip_vs_wrr(E) ip_vs_rr(E) ip_vs(E) xt_MASQUERADE(E) nft_chain_nat(E) xt_mark(E) xt_conntrack(E) xt_comment(E) nft_compat(E) nf_tables(E) nfnetlink(E) br_netfilter(E) bridge(E) stp(E) llc(E) iptable_nat(E) nf_nat(E) iptable_filter(E) ip_tables(E) overlay(E) dummy(E) sunrpc(E) nf_conntrack(E) nf_defrag_ipv6(E) nf_defrag_ipv4(E) > [293790.933738] binfmt_misc(E) tls(E) isofs(E) intel_rapl_msr(E) intel_rapl_common(E) kvm_amd(E) virtio_gpu(E) ccp(E) virtio_dma_buf(E) drm_shmem_helper(E) virtio_net(E) vfat(E) kvm(E) i2c_i801(E) drm_kms_helper(E) net_failover(E) irqbypass(E) syscopyarea(E) fat(E) i2c_smbus(E) failover(E) sysfillrect(E) virtio_balloon(E) sysimgblt(E) drm(E) fuse(E) ext4(E) mbcache(E) jbd2(E) sr_mod(E) cdrom(E) sg(E) ahci(E) libahci(E) crct10dif_pclmul(E) crc32_pclmul(E) polyval_clmulni(E) libata(E) polyval_generic(E) ghash_clmulni_intel(E) sha512_ssse3(E) virtio_blk(E) serio_raw(E) btrfs(E) xor(E) zstd_compress(E) raid6_pq(E) libcrc32c(E) crc32c_intel(E) dm_mirror(E) dm_region_hash(E) dm_log(E) dm_mod(E) > [293790.946262] Unloaded tainted modules: edac_mce_amd(E):1 > [293790.956625] CPU: 13 PID: 3837105 Comm: QueryWorker-30f Tainted: G W E 6.4.12-1.gdc.el9.x86_64 #1 > [293790.957963] Hardware name: RDO OpenStack Compute/RHEL, BIOS edk2-20230301gitf80f052277c8-2.el9 03/01/2023 > [293790.959681] RIP: 0010:__cfsb_csd_unthrottle+0x149/0x160 > [293790.960933] Code: 37 fa ff 0f 0b e9 17 ff ff ff 80 3d 41 59 fc 01 00 0f 85 21 ff ff ff 48 c7 c7 98 03 95 9d c6 05 2d 59 fc 01 01 e8 77 37 fa ff <0f> 0b 41 8b 85 88 09 00 00 e9 00 ff ff ff 66 0f 1f 84 00 00 00 00 > [293790.964077] RSP: 0000:ffffb708e7217db8 EFLAGS: 00010086 > [293790.965160] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000027 > [293790.966340] RDX: ffff905482c5f708 RSI: 0000000000000001 RDI: ffff905482c5f700 > [293790.967839] RBP: ffff9029bb0e9e00 R08: 0000000000000000 R09: 00000000ffff7fff > [293790.969496] R10: ffffb708e7217c58 R11: ffffffff9e3e2c88 R12: 00000000000317c0 > [293790.970859] R13: ffff903602c317c0 R14: 0000000000000000 R15: ffff905482c726b8 > [293790.972085] FS: 00007ff3b66fe640(0000) GS:ffff905482c40000(0000) knlGS:0000000000000000 > [293790.973678] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [293790.974663] CR2: 00007f16889036c0 CR3: 0000002072e34004 CR4: 0000000000770ee0 > [293790.976108] PKRU: 55555554 > [293790.977048] Call Trace: > [293790.978013] <TASK> > [293790.978678] ? __warn+0x80/0x130 > [293790.979727] ? __cfsb_csd_unthrottle+0x149/0x160 > [293790.980824] ? report_bug+0x195/0x1a0 > [293790.981806] ? handle_bug+0x3c/0x70 > [293790.982884] ? exc_invalid_op+0x14/0x70 > [293790.983837] ? asm_exc_invalid_op+0x16/0x20 > [293790.984626] ? __cfsb_csd_unthrottle+0x149/0x160 > [293790.985599] ? __cfsb_csd_unthrottle+0x149/0x160 > [293790.986583] unregister_fair_sched_group+0x73/0x1d0 > [293790.987682] sched_unregister_group_rcu+0x1a/0x40 > [293790.988752] rcu_do_batch+0x199/0x4d0 > [293790.989643] rcu_core+0x267/0x420 > [293790.990418] __do_softirq+0xc8/0x2ab > [293790.991285] __irq_exit_rcu+0xb9/0xf0 > [293790.992555] sysvec_apic_timer_interrupt+0x3c/0x90 > [293790.993477] asm_sysvec_apic_timer_interrupt+0x16/0x20 > [293790.994171] RIP: 0033:0x7ff4dca91f60 > [293790.994801] Code: 75 15 49 8b f7 c5 f8 77 49 ba 80 6c bf f3 f4 7f 00 00 41 ff d2 eb 0d 4b 89 7c 13 f8 49 83 c2 f8 4d 89 57 70 48 8b c3 c5 f8 77 <48> 83 c4 50 5d 4d 8b 97 08 01 00 00 41 85 02 c3 49 8d 14 fc 8b 7a > [293790.997256] RSP: 002b:00007ff3b66fd190 EFLAGS: 00000246 > [293790.998138] RAX: 0000000655fd6ed0 RBX: 0000000655fd6ed0 RCX: 0000000000000004 > [293790.999184] RDX: 0000000000000000 RSI: 000000066cf4939c RDI: 00007ff4f1180eb7 > [293791.000220] RBP: 0000000000000004 R08: 000000066cf48530 R09: 000000066cf493a8 > [293791.001274] R10: 00000000000007f0 R11: 00007ff3bc00ca80 R12: 0000000000000000 > [293791.002222] R13: 000000066cf49390 R14: 00000000cd9e9272 R15: 00007ff39c033800 > [293791.002966] </TASK> > [293791.003489] ---[ end trace 0000000000000000 ]--- > [293791.004440] ------------[ cut here ]------------ > [293791.005479] rq->clock_update_flags < RQCF_ACT_SKIP > [293791.005493] WARNING: CPU: 0 PID: 3920513 at kernel/sched/sched.h:1496 update_curr+0x162/0x1d0 > > Sadly I don't have more info but hopefully this stacktrace will be enough. > See Bugzilla for the full thread. Anyway, I'm adding this regression to regzbot: #regzbot introduced: ebb83d84e49b54 https://bugzilla.kernel.org/show_bug.cgi?id=217843 Thanks. [1]: https://bugzilla.kernel.org/show_bug.cgi?id=217843 -- An old man doll... just what I always wanted! - Clara

6 months, 1 week

[PATCH 5.15 1/3] ext4: add two helper functions extent_logical_end() and pa_logical_end()

by Baokun Li

commit 43bbddc067883d94de7a43d5756a295439fbe37d upstream. When we use lstart + len to calculate the end of free extent or prealloc space, it may exceed the maximum value of 4294967295(0xffffffff) supported by ext4_lblk_t and cause overflow, which may lead to various problems. Therefore, we add two helper functions, extent_logical_end() and pa_logical_end(), to limit the type of end to loff_t, and also convert lstart to loff_t for calculation to avoid overflow. Signed-off-by: Baokun Li <libaokun1(a)huawei.com> Reviewed-by: Ritesh Harjani (IBM) <ritesh.list(a)gmail.com> Link: https://lore.kernel.org/r/20230724121059.11834-2-libaokun1@huawei.com Signed-off-by: Theodore Ts'o <tytso(a)mit.edu> Conflicts: fs/ext4/mballoc.c Signed-off-by: Baokun Li <libaokun1(a)huawei.com> --- fs/ext4/mballoc.c | 7 +++---- fs/ext4/mballoc.h | 14 ++++++++++++++ 2 files changed, 17 insertions(+), 4 deletions(-) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index e5b81d8be232..33a715532c03 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4079,7 +4079,7 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac, /* first, let's learn actual file size * given current request is allocated */ - size = ac->ac_o_ex.fe_logical + EXT4_C2B(sbi, ac->ac_o_ex.fe_len); + size = extent_logical_end(sbi, &ac->ac_o_ex); size = size << bsbits; if (size < i_size_read(ac->ac_inode)) size = i_size_read(ac->ac_inode); @@ -4419,8 +4419,7 @@ ext4_mb_use_preallocated(struct ext4_allocation_context *ac) /* all fields in this condition don't change, * so we can skip locking for them */ if (ac->ac_o_ex.fe_logical < pa->pa_lstart || - ac->ac_o_ex.fe_logical >= (pa->pa_lstart + - EXT4_C2B(sbi, pa->pa_len))) + ac->ac_o_ex.fe_logical >= pa_logical_end(sbi, pa)) continue; /* non-extent files can't have physical blocks past 2^32 */ @@ -5241,7 +5240,7 @@ static void ext4_mb_group_or_file(struct ext4_allocation_context *ac) group_pa_eligible = sbi->s_mb_group_prealloc > 0; inode_pa_eligible = true; - size = ac->ac_o_ex.fe_logical + EXT4_C2B(sbi, ac->ac_o_ex.fe_len); + size = extent_logical_end(sbi, &ac->ac_o_ex); isize = (i_size_read(ac->ac_inode) + ac->ac_sb->s_blocksize - 1) >> bsbits; diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h index 39da92ceabf8..bf048cbf3986 100644 --- a/fs/ext4/mballoc.h +++ b/fs/ext4/mballoc.h @@ -219,6 +219,20 @@ static inline ext4_fsblk_t ext4_grp_offs_to_block(struct super_block *sb, (fex->fe_start << EXT4_SB(sb)->s_cluster_bits); } +static inline loff_t extent_logical_end(struct ext4_sb_info *sbi, + struct ext4_free_extent *fex) +{ + /* Use loff_t to avoid end exceeding ext4_lblk_t max. */ + return (loff_t)fex->fe_logical + EXT4_C2B(sbi, fex->fe_len); +} + +static inline loff_t pa_logical_end(struct ext4_sb_info *sbi, + struct ext4_prealloc_space *pa) +{ + /* Use loff_t to avoid end exceeding ext4_lblk_t max. */ + return (loff_t)pa->pa_lstart + EXT4_C2B(sbi, pa->pa_len); +} + typedef int (*ext4_mballoc_query_range_fn)( struct super_block *sb, ext4_group_t agno, -- 2.31.1

6 months, 1 week

[PATCH v3] serial: 8250: 8250_omap: Do not start RX DMA on THRI interrupt

by Ronald Wahl

From: Ronald Wahl <ronald.wahl(a)raritan.com> Starting RX DMA on THRI interrupt is too early because TX may not have finished yet. This change is inspired by commit 90b8596ac460 ("serial: 8250: Prevent starting up DMA Rx on THRI interrupt") and fixes DMA issues I had with an AM62 SoC that is using the 8250 OMAP variant. Cc: stable(a)vger.kernel.org Fixes: c26389f998a8 ("serial: 8250: 8250_omap: Add DMA support for UARTs on K3 SoCs") Signed-off-by: Ronald Wahl <ronald.wahl(a)raritan.com> --- V3: - add Cc: stable(a)vger.kernel.org V2: - add Fixes: tag - fix author drivers/tty/serial/8250/8250_omap.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index c7ab2963040b..f2f59ec6b50b 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -1282,10 +1282,11 @@ static int omap_8250_dma_handle_irq(struct uart_port *port) status = serial_port_in(port, UART_LSR); - if (priv->habit & UART_HAS_EFR2) - am654_8250_handle_rx_dma(up, iir, status); - else - status = omap_8250_handle_rx_dma(up, iir, status); + if ((iir & 0x3f) != UART_IIR_THRI) + if (priv->habit & UART_HAS_EFR2) + am654_8250_handle_rx_dma(up, iir, status); + else + status = omap_8250_handle_rx_dma(up, iir, status); serial8250_modem_status(up); if (status & UART_LSR_THRE && up->dma->tx_err) { -- 2.41.0

6 months, 1 week

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Linux-stable-mirror November 2023