Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | INFO: rcu detected stall in sys_chdir fs | 1 | 725d | 725d | 0/28 | auto-obsoleted due to no activity on 2023/05/26 02:40 |
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Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | INFO: rcu detected stall in sys_chdir fs | 1 | 725d | 725d | 0/28 | auto-obsoleted due to no activity on 2023/05/26 02:40 |
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P23334/1:b..l rcu: (detected by 1, t=10502 jiffies, g=145277, q=392 ncpus=2) task:syz-executor state:R running task stack:26784 pid:23334 tgid:23334 ppid:14404 flags:0x00000000 Call Trace: <TASK> context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5758 Code: 2b 00 74 08 4c 89 f7 e8 0a 84 89 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc90003357be0 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff9200066af88 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: ffffffff8bcaccc0 RDI: ffffffff8c202880 RBP: ffffc90003357d30 R08: ffffffff92fad587 R09: 1ffffffff25f5ab0 R10: dffffc0000000000 R11: fffffbfff25f5ab1 R12: 1ffff9200066af84 R13: dffffc0000000000 R14: ffffc90003357c40 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:329 [inline] rcu_read_lock include/linux/rcupdate.h:781 [inline] dput+0x54/0x2b0 fs/dcache.c:842 path_put+0x39/0x60 fs/namei.c:561 set_fs_pwd+0x1d0/0x290 fs/fs_struct.c:47 __do_sys_chdir fs/open.c:566 [inline] __se_sys_chdir+0x1ce/0x220 fs/open.c:552 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8aa35749f7 RSP: 002b:00007ffcaa2f9b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000050 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8aa35749f7 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007ffcaa2f9c20 RBP: 0000000000000001 R08: 0000000000000000 R09: 00007f8aa423d6c0 R10: 0000555577289500 R11: 0000000000000246 R12: 00007ffcaa2f9c60 R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffcaa2f9c60 </TASK> rcu: rcu_preempt kthread starved for 10405 jiffies! g145277 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:R running task stack:26448 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2000 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline] NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/07/12 06:39 | upstream | 8a18fda0febb | eaeb5c15 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | INFO: rcu detected stall in sys_chdir | ||
2024/07/29 21:49 | linux-next | 931a3b3bccc9 | 5187fc86 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | INFO: rcu detected stall in sys_chdir |