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INFO: rcu detected stall in sys_mbind (3)

Status: auto-obsoleted due to no activity on 2024/08/12 04:57
Subsystems: cgroups mm
[Documentation on labels]
First crash: 728d, last: 728d
▶ ▼ Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in mbind mm kasan 1 2 122d 177d 0/29 auto-obsoleted due to no activity on 2026/05/09 19:34
upstream INFO: rcu detected stall in sys_mbind (5) bpf 1 1 459d 459d 0/29 auto-obsoleted due to no activity on 2025/06/07 08:47
upstream INFO: rcu detected stall in sys_mbind mm 1 4 2603d 2634d 0/29 auto-closed as invalid on 2019/10/22 22:44
upstream INFO: rcu detected stall in sys_mbind (2) mm 1 1 2130d 2130d 0/29 auto-closed as invalid on 2020/11/09 09:33
upstream INFO: rcu detected stall in sys_mbind (4) mm 1 1 656d 656d 0/29 auto-obsoleted due to no activity on 2024/11/22 04:15
linux-4.19 BUG: soft lockup in sys_mbind 1 syz error 1 1863d 1863d 0/1 upstream: reported syz repro on 2021/05/05 05:15

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P1104/1:b..l P7910/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=29489, q=317 ncpus=2)
task:syz-executor.3  state:R  running task     stack:23808 pid:7910  tgid:7909  ppid:5114   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5192 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
 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:bytes_is_nonzero mm/kasan/generic.c:89 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x8c/0x290 mm/kasan/generic.c:189
Code: 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 0f 85 c9 01 00 00 <49> ff c3 48 ff c5 75 ee e9 1e 01 00 00 45 89 dc 41 83 e4 07 0f 84
RSP: 0018:ffffc9000f51f370 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffffffff1f5c095 RCX: ffffffff816f63d0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fae04a8
RBP: ffffffffffffffff R08: ffffffff8fae04af R09: 1ffffffff1f5c095
R10: dffffc0000000000 R11: fffffbfff1f5c095 R12: 1ffff92001ea3e80
R13: ffffffff820220a9 R14: dffffc0000000001 R15: fffffbfff1f5c096
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 cpumask_test_cpu include/linux/cpumask.h:559 [inline]
 cpu_online include/linux/cpumask.h:1099 [inline]
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0xb0/0x9f0 kernel/locking/lockdep.c:5828
 rcu_lock_release include/linux/rcupdate.h:336 [inline]
 rcu_read_unlock include/linux/rcupdate.h:869 [inline]
 percpu_ref_put_many include/linux/percpu-refcount.h:337 [inline]
 percpu_ref_put+0xfa/0x180 include/linux/percpu-refcount.h:351
 __mem_cgroup_uncharge+0xa1/0x100 mm/memcontrol.c:7761
 mem_cgroup_uncharge include/linux/memcontrol.h:714 [inline]
 __folio_put+0x1ff/0x440 mm/swap.c:127
 folio_put include/linux/mm.h:1499 [inline]
 migrate_folio_move mm/migrate.c:1305 [inline]
 migrate_pages_batch+0x2cd3/0x3930 mm/migrate.c:1787
 migrate_pages_sync mm/migrate.c:1853 [inline]
 migrate_pages+0x1f59/0x3460 mm/migrate.c:1962
 do_mbind mm/mempolicy.c:1388 [inline]
 kernel_mbind mm/mempolicy.c:1531 [inline]
 __do_sys_mbind mm/mempolicy.c:1605 [inline]
 __se_sys_mbind+0x1490/0x19f0 mm/mempolicy.c:1601
 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: 0033:0x7f891567cea9
RSP: 002b:00007f891639e0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007f89157b3f80 RCX: 00007f891567cea9
RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020001000
RBP: 00007f89156ebff4 R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f89157b3f80 R15: 00007fffa07f6188
 </TASK>
task:kworker/u8:6    state:R  running task     stack:20472 pid:1104  tgid:1104  ppid:2      flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5192 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
 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:5821
Code: 2b 00 74 08 4c 89 f7 e8 1a 18 8a 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:ffffc90004547980 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920008a8f3c RCX: c392d642ac448200
RDX: dffffc0000000000 RSI: ffffffff8bcad320 RDI: ffffffff8c200760
RBP: ffffc90004547ad0 R08: ffffffff92fcb747 R09: 1ffffffff25f96e8
R10: dffffc0000000000 R11: fffffbfff25f96e9 R12: 1ffff920008a8f38
R13: dffffc0000000000 R14: ffffc900045479e0 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
 rcu_read_lock include/linux/rcupdate.h:838 [inline]
 batadv_nc_process_nc_paths+0xd6/0x3a0 net/batman-adv/network-coding.c:687
 batadv_nc_worker+0x52c/0x610 net/batman-adv/network-coding.c:735
 process_one_work kernel/workqueue.c:3248 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: rcu_preempt kthread starved for 10569 jiffies! g29489 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:25136 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5192 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2029
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2231
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 7897 Comm: syz-executor.4 Not tainted 6.10.0-rc3-next-20240611-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 0a dc d9 f5 48 89 df e8 42 1f db f5 e8 fd 2e 05 f6 fb bf 01 00 00 00 <e8> 22 eb cc f5 65 8b 05 d3 4e 6e 74 85 c0 74 06 5b c3 cc cc cc cc
RSP: 0018:ffffc9001002fd50 EFLAGS: 00000282
RAX: 1388d3e5c4b1a300 RBX: ffff88802aa91bc0 RCX: ffffffff947c3803
RDX: dffffc0000000000 RSI: ffffffff8bcac1a0 RDI: 0000000000000001
RBP: ffffc9001002fe30 R08: ffffffff8fae04af R09: 1ffffffff1f5c095
R10: dffffc0000000000 R11: fffffbfff1f5c096 R12: 1ffff110054a2c64
R13: ffff88802a516318 R14: 0000000000000000 R15: ffff88802a515a00
FS:  00007f52f13656c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f52f07b00c0 CR3: 000000005cbd2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 __set_current_blocked+0x310/0x380 kernel/signal.c:3099
 __do_sys_rt_sigreturn+0x170/0x270 arch/x86/kernel/signal_64.c:261
 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: 0033:0x7f52f0640309
Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25
RSP: 002b:00007f52f1364bc0 EFLAGS: 00000202 ORIG_RAX: 000000000000000f
RAX: ffffffffffffffda RBX: 00007f52f07b3f88 RCX: 00007f52f0640309
RDX: 00007f52f1364bc0 RSI: 00007f52f1364cf0 RDI: 0000000000000021
RBP: 00007f52f07b3f80 R08: 00007f52f13656c0 R09: 00007f52f13656c0
R10: 0000000000000000 R11: 0000000000000202 R12: 00007f52f07b3f8c
R13: 000000000000000b R14: 00007fffa239ed50 R15: 00007fffa239ee38
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/13 04:56 linux-next a957267fa7e9 2aa5052f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in sys_mbind
* Struck through repros no longer work on HEAD.