Messages in this thread | | | From | Xavier <> | Subject | PREEMPT SMP - cgroup_procs_show | Date | Thu, 30 Nov 2017 23:28:06 -0500 |
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Hello,
Ever since kernel 4.14, I've experienced an issue with erratic kernel panics, which all trace back to cgroup_procs_show. They are seemingly triggered by systemd or systemd command-line utilities at complete random. Downgrading the kernel to a version prior to 4.14 seems to rectify the issue.
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Nov 30 18:22:23 kernel: Oops: 0000 [#2] PREEMPT SMP Nov 30 18:22:23 kernel: PGD 0 P4D 0 Nov 30 18:22:23 kernel: IP: pids_free+0x11/0x40 Nov 30 18:22:23 kernel: BUG: unable to handle kernel NULL pointer dereference at 00000000000000b0 Nov 30 18:22:23 kernel: ---[ end trace abcb55e9159eabe0 ]--- Nov 30 18:22:23 kernel: CR2: ffffffffffffffde Nov 30 18:22:23 kernel: RIP: __task_pid_nr_ns+0x60/0xd0 RSP: ffffb256ce567dc8 Nov 30 18:22:23 kernel: Code: 74 0d 48 8d 44 6d 00 48 8d 3c c5 a0 05 00 00 48 8b 9b 68 05 00 00 48 01 fb 48 8b 0b 31 db 48 85 c9 74 1a 41 8b 94 24 30 08 00 00 <3b> 51 04 77 0d 48 c1 e2 05 48 01 d1 4c 3b 61 38 74 45 e8 69 a5 Nov 30 18:22:23 kernel: R13: 00007ffe7905058c R14: 0000000000000000 R15: 0000000000000000 Nov 30 18:22:23 kernel: R10: 0000000000001000 R11: 0000000000000246 R12: 0000000000000000 Nov 30 18:22:23 kernel: RBP: 00007f82bbf2f240 R08: 0000000000000003 R09: ffffffffffffffb0 Nov 30 18:22:23 kernel: RDX: 0000000000001000 RSI: 00005598ca705e40 RDI: 0000000000000008 Nov 30 18:22:23 kernel: RAX: ffffffffffffffda RBX: 00005598ca6f0260 RCX: 00007f82bbc67a11 Nov 30 18:22:23 kernel: RSP: 002b:00007ffe7904fd18 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 Nov 30 18:22:23 kernel: RIP: 0033:0x7f82bbc67a11 Nov 30 18:22:23 kernel: entry_SYSCALL_64_fastpath+0x1a/0xa5 Nov 30 18:22:23 kernel: SyS_read+0x52/0xc0 Nov 30 18:22:23 kernel: vfs_read+0x89/0x130 Nov 30 18:22:23 kernel: __vfs_read+0x33/0x150 Nov 30 18:22:23 kernel: seq_read+0x331/0x440 Nov 30 18:22:23 kernel: cgroup_procs_show+0x15/0x30 Nov 30 18:22:23 kernel: Call Trace: Nov 30 18:22:23 kernel: DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 Nov 30 18:22:23 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Nov 30 18:22:23 kernel: CR2: ffffffffffffffde CR3: 0000000cb0e81005 CR4: 00000000003626e0 Nov 30 18:22:23 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Nov 30 18:22:23 kernel: FS: 00007f82bc33d8c0(0000) GS:ffff952d3f300000(0000) knlGS:0000000000000000 Nov 30 18:22:23 kernel: R13: 00000000ffffffff R14: ffff952c9a17ba08 R15: ffff952a2be8d900 Nov 30 18:22:23 kernel: R10: 0000000000001000 R11: ffff952ce831b004 R12: ffffffffb5c4ca60 Nov 30 18:22:23 kernel: RBP: 0000000000000000 R08: 0000000000001000 R09: 0000000000000005 Nov 30 18:22:23 kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000005a0 Nov 30 18:22:23 kernel: RAX: ffff952d0a0ffb80 RBX: 0000000000000000 RCX: ffffffffffffffda Nov 30 18:22:23 kernel: RSP: 0018:ffffb256ce567dc8 EFLAGS: 00010282 Nov 30 18:22:23 kernel: RIP: 0010:__task_pid_nr_ns+0x60/0xd0 Nov 30 18:22:23 kernel: task: ffff952ced2fbb00 task.stack: ffffb256ce564000 Nov 30 18:22:23 kernel: Hardware name: ASUS All Series/X99-A/USB 3.1, BIOS 3701 03/31/2017 Nov 30 18:22:23 kernel: CPU: 4 PID: 2891 Comm: systemctl Tainted: P O 4.14.3-1-ARCH #1
Nov 30 17:52:17 kernel: Command line: BOOT_IMAGE=/vmlinuz-linux root=UUID=* rw quiet processor.max_cstate=1 intel_idle.max_cstate=0 scsi_mod.use_blk_mq=1 quiet nvidia-drm.modeset=1 Nov 30 17:52:17 kernel: Linux version 4.14.3-1-ARCH (builduser@heftig-12222) (gcc version 7.2.1 20171128 (GCC)) #1 SMP PREEMPT Thu Nov 30 18:33:13 UTC 2017
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/proc/cpuinfo
processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 79 model name : Intel(R) Core(TM) i7-6800K CPU @ 3.40GHz stepping : 1 microcode : 0xb00001c cpu MHz : 3999.938 cache size : 15360 KB physical id : 0 siblings : 12 core id : 0 cpu cores : 6 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 20 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch epb intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm rdseed adx smap xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts bugs : bogomips : 6783.90 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual
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