Your message dated Sun, 23 May 2021 20:53:55 +0200 with message-id <E1lktET-0006Lt-2w@hullmann.westfalen.local> and subject line Closing this bug has caused the Debian Bug report #857183, regarding linux-source-3.16: kernel panic while running under KVM - self-detected stall - v9fs_vfs in stack to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact ow...@bugs.debian.org immediately.) -- 857183: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=857183 Debian Bug Tracking System Contact ow...@bugs.debian.org with problems
--- Begin Message ---Package: linux-source-3.16 Version: 3.16.7-ckt20-1+deb8u4 Severity: important Tags: d-i upstream Dear Maintainer, We are running this system under KVM. The KVM host is running: 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u2 The client is running: 3.16.0-4-686-pae #1 SMP Debian 3.16.7-ckt20-1+deb8u4 We use a 9p filesystem to transfer some data from the KVM-host to the client. This transfer is cron triggered (on both the KVM-host and the client) and the panic is around the triggered time. The KVM-host writes some files, the client reads them. The panic mainly (nearly only) occurs on the busiest production systems. The panics vanish when I disable the use of the 9p filesystem (== don't mount it on the client). This strongly hints to the 9p filesystem as the problem... Unfortunately I cannot reproduce this problem on a test situation :-( The kernel trace: Mar 2 18:31:24 xxxx kernel: [90898.008004] INFO: rcu_sched self-detected stall on CPU { 2} (t=5250 jiffies g=3946477 c=3946476 q=19488) Mar 2 18:31:24 xxxx kernel: [90898.008004] sending NMI to all CPUs: Mar 2 18:31:24 xxxx kernel: [90898.008004] NMI backtrace for cpu 2 Mar 2 18:31:24 xxxx kernel: [90898.008004] EIP: 0060:[<c103ffe5>] EFLAGS: 00010046 CPU: 2 Mar 2 18:31:24 xxxx kernel: [90898.008004] EIP is at default_send_IPI_mask_logical+0x85/0xc0 Mar 2 18:31:24 xxxx kernel: [90898.008004] EAX: 00000c00 EBX: 0f000000 ECX: fffff000 EDX: fffff000 Mar 2 18:31:24 xxxx kernel: [90898.008004] ESI: 00000002 EDI: 00000006 EBP: e855fd64 ESP: e855fd54 Mar 2 18:31:24 xxxx kernel: [90898.008004] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Mar 2 18:31:24 xxxx kernel: [90898.008004] CR0: 8005003b CR2: 09a022d8 CR3: 1ace1000 CR4: 000006f0 Mar 2 18:31:24 xxxx kernel: [90898.008004] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 Mar 2 18:31:24 xxxx kernel: [90898.008004] DR6: fffe0ff0 DR7: 00000400 Mar 2 18:31:24 xxxx kernel: [90898.008004] 00000800 c1614f80 c1614f80 f75d2620 e855fd78 c10402ec c15483d6 c157a0b6 Mar 2 18:31:24 xxxx kernel: [90898.008004] c1614f80 e855fdc0 c10ac8cd c1557904 00001482 003c37ed 003c37ec 00004c20 Mar 2 18:31:24 xxxx kernel: [90898.008004] 00000000 e855fdc0 c1084750 00000001 c166a5ec c1614f80 f75d2620 00000002 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c10402ec>] ? arch_trigger_all_cpu_backtrace+0x5c/0xd0 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c10ac8cd>] ? rcu_check_callbacks+0x38d/0x5b0 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c1084750>] ? account_process_tick+0x60/0x130 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c1062d4c>] ? update_process_times+0x3c/0x60 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c10b7856>] ? tick_sched_handle.isra.13+0x26/0x60 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c10b78c7>] ? tick_sched_timer+0x37/0x70 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c1075d58>] ? __remove_hrtimer+0x38/0x90 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c107666d>] ? __run_hrtimer+0x6d/0x190 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c10b7890>] ? tick_sched_handle.isra.13+0x60/0x60 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c1076de8>] ? hrtimer_interrupt+0x1e8/0x2a0 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c108960e>] ? check_preempt_wakeup+0x12e/0x1a0 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c103e34f>] ? local_apic_timer_interrupt+0x2f/0x60 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c147f843>] ? smp_apic_timer_interrupt+0x33/0x50 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c147ef7c>] ? apic_timer_interrupt+0x34/0x3c Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c11000e0>] ? event_enable_trigger_func+0x170/0x290 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c117034d>] ? generic_fillattr+0x9d/0xa0 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<f816dc08>] ? v9fs_vfs_getattr_dotl+0x58/0x90 [9p] Mar 2 18:31:24 xxxx kernel: [90898.008004] [<f816dbb0>] ? v9fs_vfs_mkdir_dotl+0x1e0/0x1e0 [9p] Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c1170373>] ? vfs_getattr_nosec+0x23/0x40 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c1170469>] ? vfs_fstatat+0x59/0x90 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c1170e46>] ? SyS_stat64+0x26/0x40 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c1169e8a>] ? filp_close+0x4a/0x70 Mar 2 18:31:24 xxxx kernel: [90898.008004] [<c147e709>] ? syscall_call+0x7/0x7 Mar 2 18:31:24 xxxx kernel: [90898.011759] NMI backtrace for cpu 3 Mar 2 18:31:24 xxxx kernel: [90898.012003] EIP: 0060:[<c117034d>] EFLAGS: 00000202 CPU: 3 Mar 2 18:31:24 xxxx kernel: [90898.012003] EIP is at generic_fillattr+0x9d/0xa0 Mar 2 18:31:24 xxxx kernel: [90898.012003] EAX: f37171d8 EBX: 0004200b ECX: 00000000 EDX: f0533f5c Mar 2 18:31:24 xxxx kernel: [90898.012003] ESI: 00001bbd EDI: f0533f5c EBP: f0533efc ESP: f0533ef4 Mar 2 18:31:24 xxxx kernel: [90898.012003] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Mar 2 18:31:24 xxxx kernel: [90898.012003] CR0: 8005003b CR2: 09a022d8 CR3: 325c1000 CR4: 000006f0 Mar 2 18:31:24 xxxx kernel: [90898.012003] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 Mar 2 18:31:24 xxxx kernel: [90898.012003] DR6: fffe0ff0 DR7: 00000400 Mar 2 18:31:24 xxxx kernel: [90898.012003] d33bc880 ed2d2100 f0533f10 f816dc08 f816dbb0 d33bc880 f37171d8 f0533f24 Mar 2 18:31:24 xxxx kernel: [90898.012003] c1170373 f0533f3c 00000001 00000000 f0533f50 c1170469 f0533f3c f0533f5c Mar 2 18:31:24 xxxx kernel: [90898.012003] 080f9547 ffffff9c f28e6a10 d33bc880 bffa6ac0 09a15508 09a03be8 f0533fac Mar 2 18:31:24 xxxx kernel: [90898.012003] [<f816dc08>] ? v9fs_vfs_getattr_dotl+0x58/0x90 [9p] Mar 2 18:31:24 xxxx kernel: [90898.012003] [<f816dbb0>] ? v9fs_vfs_mkdir_dotl+0x1e0/0x1e0 [9p] Mar 2 18:31:24 xxxx kernel: [90898.012003] [<c1170373>] ? vfs_getattr_nosec+0x23/0x40 Mar 2 18:31:24 xxxx kernel: [90898.012003] [<c1170469>] ? vfs_fstatat+0x59/0x90 Mar 2 18:31:24 xxxx kernel: [90898.012003] [<c1170e46>] ? SyS_stat64+0x26/0x40 Mar 2 18:31:24 xxxx kernel: [90898.012003] [<c1169e8a>] ? filp_close+0x4a/0x70 Mar 2 18:31:24 xxxx kernel: [90898.012003] [<c147e709>] ? syscall_call+0x7/0x7 Mar 2 18:31:24 xxxx kernel: [90898.010212] NMI backtrace for cpu 1 Mar 2 18:31:24 xxxx kernel: [90898.012003] INFO: rcu_sched self-detected stall on CPU { 3} (t=5250 jiffies g=3946477 c=3946476 q=19488) Mar 2 18:31:24 xxxx kernel: [90898.010212] EIP: 0060:[<c1049a12>] EFLAGS: 00200246 CPU: 1 Mar 2 18:31:24 xxxx kernel: [90898.010212] EIP is at native_safe_halt+0x2/0x10 Mar 2 18:31:24 xxxx kernel: [90898.010212] EAX: 00000000 EBX: f3910000 ECX: 00000000 EDX: f3910000 Mar 2 18:31:24 xxxx kernel: [90898.010212] ESI: ffffffed EDI: 00000001 EBP: f3911f50 ESP: f3911f40 Mar 2 18:31:24 xxxx kernel: [90898.010212] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Mar 2 18:31:24 xxxx kernel: [90898.010212] CR0: 8005003b CR2: 09e40c08 CR3: 2dc50000 CR4: 000006f0 Mar 2 18:31:24 xxxx kernel: [90898.010212] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 Mar 2 18:31:24 xxxx kernel: [90898.010212] DR6: fffe0ff0 DR7: 00000400 Mar 2 18:31:24 xxxx kernel: [90898.010212] c10180dc f3910000 ffffffed 00000000 f3911f58 c101887e f3911f90 c1090c53 Mar 2 18:31:24 xxxx kernel: [90898.010212] f3911fec 00000000 f3911fec 00200282 f3911fec 00000000 00000000 a4d09de9 Mar 2 18:31:24 xxxx kernel: [90898.010212] 043f7133 98ca892d 00000000 00000000 f3911fb4 c103c527 00000000 00000000 Mar 2 18:31:24 xxxx kernel: [90898.010212] [<c10180dc>] ? default_idle+0x1c/0xa0 Mar 2 18:31:24 xxxx kernel: [90898.010212] [<c101887e>] ? arch_cpu_idle+0xe/0x10 Mar 2 18:31:24 xxxx kernel: [90898.010212] [<c1090c53>] ? cpu_startup_entry+0x303/0x3b0 Mar 2 18:31:24 xxxx kernel: [90898.010212] [<c103c527>] ? start_secondary+0x207/0x2e0 Mar 2 18:31:24 xxxx kernel: [90898.012003] NMI backtrace for cpu 0 Mar 2 18:31:24 xxxx kernel: [90898.012003] EIP: 0060:[<c1049a12>] EFLAGS: 00200246 CPU: 0 Mar 2 18:31:24 xxxx kernel: [90898.012003] EIP is at native_safe_halt+0x2/0x10 Mar 2 18:31:24 xxxx kernel: [90898.012003] EAX: 00000000 EBX: c15ee000 ECX: 00000000 EDX: c15ee000 Mar 2 18:31:24 xxxx kernel: [90898.012003] ESI: ffffffed EDI: 00000000 EBP: c15eff98 ESP: c15eff88 Mar 2 18:31:24 xxxx kernel: [90898.012003] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Mar 2 18:31:24 xxxx kernel: [90898.012003] CR0: 8005003b CR2: 0975d050 CR3: 19e55000 CR4: 000006f0 Mar 2 18:31:24 xxxx kernel: [90898.012003] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 Mar 2 18:31:24 xxxx kernel: [90898.012003] DR6: fffe0ff0 DR7: 00000400 Mar 2 18:31:24 xxxx kernel: [90898.012003] c10180dc c15ee000 ffffffed c171f800 c15effa0 c101887e c15effd8 c1090c53 Mar 2 18:31:24 xxxx kernel: [90898.012003] c15effec c15effbc c15effec 00000000 c15effec 00000000 00000000 0410eae1 Mar 2 18:31:24 xxxx kernel: [90898.012003] 1b158d91 c16c23a0 00099800 c171f800 01bf6003 c1671bf9 0000007e ffffffff Mar 2 18:31:24 xxxx kernel: [90898.012003] [<c10180dc>] ? default_idle+0x1c/0xa0 Mar 2 18:31:24 xxxx kernel: [90898.012003] [<c101887e>] ? arch_cpu_idle+0xe/0x10 Mar 2 18:31:24 xxxx kernel: [90898.012003] [<c1090c53>] ? cpu_startup_entry+0x303/0x3b0 Mar 2 18:31:24 xxxx kernel: [90898.012003] [<c1671bf9>] ? start_kernel+0x3dd/0x3e2 Mar 2 18:31:24 xxxx kernel: [90898.012003] [<c1671625>] ? set_init_arg+0x45/0x45 Mar 2 18:31:24 xxxx kernel: [90898.008004] INFO: NMI handler (arch_trigger_all_cpu_backtrace_handler) took too long to run: 15.261 msecs Mar 2 18:31:50 xxxx kernel: [90924.056004] EIP: 0060:[<c117034d>] EFLAGS: 00000202 CPU: 2 Mar 2 18:31:50 xxxx kernel: [90924.056004] EIP is at generic_fillattr+0x9d/0xa0 Mar 2 18:31:50 xxxx kernel: [90924.056004] EAX: f37171d8 EBX: 0004200b ECX: 00000000 EDX: e855ff5c Mar 2 18:31:50 xxxx kernel: [90924.056004] ESI: 00001bbd EDI: e855ff5c EBP: e855fefc ESP: e855fef4 Mar 2 18:31:50 xxxx kernel: [90924.056004] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Mar 2 18:31:50 xxxx kernel: [90924.056004] CR0: 8005003b CR2: 09a022d8 CR3: 1ace1000 CR4: 000006f0 Mar 2 18:31:50 xxxx kernel: [90924.056004] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 Mar 2 18:31:50 xxxx kernel: [90924.056004] DR6: fffe0ff0 DR7: 00000400 Mar 2 18:31:50 xxxx kernel: [90924.056004] d33bc880 eec3aa00 e855ff10 f816dc08 f816dbb0 d33bc880 f37171d8 e855ff24 Mar 2 18:31:50 xxxx kernel: [90924.056004] c1170373 e855ff3c 00000001 00000000 e855ff50 c1170469 e855ff3c e855ff5c Mar 2 18:31:50 xxxx kernel: [90924.056004] 080f9547 ffffff9c f28e6a10 d33bc880 bffa6ac0 09a15508 09a173c8 e855ffac Mar 2 18:31:50 xxxx kernel: [90924.056004] [<f816dc08>] ? v9fs_vfs_getattr_dotl+0x58/0x90 [9p] Mar 2 18:31:50 xxxx kernel: [90924.056004] [<f816dbb0>] ? v9fs_vfs_mkdir_dotl+0x1e0/0x1e0 [9p] Mar 2 18:31:50 xxxx kernel: [90924.056004] [<c1170373>] ? vfs_getattr_nosec+0x23/0x40 Mar 2 18:31:50 xxxx kernel: [90924.056004] [<c1170469>] ? vfs_fstatat+0x59/0x90 Mar 2 18:31:50 xxxx kernel: [90924.056004] [<c1170e46>] ? SyS_stat64+0x26/0x40 Mar 2 18:31:50 xxxx kernel: [90924.056004] [<c1169e8a>] ? filp_close+0x4a/0x70 Mar 2 18:31:50 xxxx kernel: [90924.056004] [<c147e709>] ? syscall_call+0x7/0x7 Mar 2 18:31:50 xxxx kernel: [90924.072004] EIP: 0060:[<c117034d>] EFLAGS: 00000202 CPU: 3 Mar 2 18:31:50 xxxx kernel: [90924.072004] EIP is at generic_fillattr+0x9d/0xa0 Mar 2 18:31:50 xxxx kernel: [90924.072004] EAX: f37171d8 EBX: 0004200b ECX: 00000000 EDX: f0533f5c ... this keeps going.... -- System Information: Debian Release: A bit of a mix between 7 and 8 APT prefers stable Architecture: i386 client, amd64 host
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--- Begin Message ---This bug was filed for a very old kernel. If you can reproduce it with - the current version in unstable/testing - the latest kernel from buster.backports please reopen the bug, see https://www.debian.org/Bugs/server-control
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