rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P51/1:b..l P9391/1:b..l P9406/1:b..l P9378/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=41529, q=189 ncpus=2)
task:syz-executor.1 state:R running task stack:26816 pid:9378 tgid:9377 ppid:6461 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6924
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
unwind_next_frame+0x1c90/0x23a0 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
save_stack+0x162/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x8d/0x400 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1088 [inline]
free_unref_folios+0x991/0x1310 mm/page_alloc.c:2614
folios_put_refs+0x487/0x6d0 mm/swap.c:1024
folio_batch_release include/linux/pagevec.h:101 [inline]
shmem_undo_range+0x5a1/0x1160 mm/shmem.c:1005
shmem_truncate_range mm/shmem.c:1114 [inline]
shmem_evict_inode+0x3a3/0xbb0 mm/shmem.c:1242
evict+0x2ed/0x6c0 fs/inode.c:667
iput_final fs/inode.c:1741 [inline]
iput.part.0+0x5a8/0x7f0 fs/inode.c:1767
iput+0x5c/0x80 fs/inode.c:1757
dentry_unlink_inode+0x295/0x480 fs/dcache.c:400
__dentry_kill+0x1d0/0x600 fs/dcache.c:603
dput.part.0+0x4b1/0x9b0 fs/dcache.c:845
dput+0x1f/0x30 fs/dcache.c:835
__fput+0x54e/0xbb0 fs/file_table.c:430
task_work_run+0x14e/0x250 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa9b/0x2ba0 kernel/exit.c:874
do_group_exit+0xd3/0x2a0 kernel/exit.c:1023
get_signal+0x2616/0x2710 kernel/signal.c:2909
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x14a/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f285ca7cf77
RSP: 002b:00007f285d790ea8 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: 0000000000000000 RBX: 0000000001000000 RCX: 00007f285ca7cf77
RDX: 0000000000000000 RSI: 0000000008400000 RDI: 00007f2852800000
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000967e
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000003
R13: 00007f285d790f80 R14: 00007f285d790f40 R15: 00007f2852800000
task:syz-executor.2 state:R running task stack:27168 pid:9406 tgid:9406 ppid:5106 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6924
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
zap_pte_range mm/memory.c:1682 [inline]
zap_pmd_range mm/memory.c:1730 [inline]
zap_pud_range mm/memory.c:1759 [inline]
zap_p4d_range mm/memory.c:1780 [inline]
unmap_page_range+0xbc7/0x4220 mm/memory.c:1801
unmap_single_vma+0x194/0x2b0 mm/memory.c:1847
unmap_vmas+0x22f/0x490 mm/memory.c:1891
exit_mmap+0x1b8/0xb20 mm/mmap.c:3341
__mmput+0x12a/0x4d0 kernel/fork.c:1346
mmput+0x62/0x70 kernel/fork.c:1368
exit_mm kernel/exit.c:565 [inline]
do_exit+0x9b7/0x2ba0 kernel/exit.c:861
do_group_exit+0xd3/0x2a0 kernel/exit.c:1023
__do_sys_exit_group kernel/exit.c:1034 [inline]
__se_sys_exit_group kernel/exit.c:1032 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1032
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcfe927cee9
RSP: 002b:00007fffb0f53978 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007fcfe927cee9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 00007fcfe9200000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
task:syz-executor.3 state:R running task stack:28384 pid:9391 tgid:9389 ppid:5113 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5722
Code: c1 05 9a bf 96 7e 83 f8 01 0f 85 ea 02 00 00 9c 58 f6 c4 02 0f 85 d5 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90003dff6c8 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920007bfedb RCX: 00000000d439196c
RDX: 0000000000000001 RSI: ffffffff8b2cb0e0 RDI: ffffffff8b8fffc0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff284d658
R10: ffffffff9426b2c7 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8dbb18e0 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
sk_filter_trim_cap+0x27b/0xac0 net/core/filter.c:154
sk_filter include/linux/filter.h:945 [inline]
unix_dgram_sendmsg+0x66b/0x1a60 net/unix/af_unix.c:2006
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0xab5/0xc90 net/socket.c:2585
___sys_sendmsg+0x135/0x1e0 net/socket.c:2639
__sys_sendmmsg+0x1a1/0x450 net/socket.c:2725
__do_sys_sendmmsg net/socket.c:2754 [inline]
__se_sys_sendmmsg net/socket.c:2751 [inline]
__x64_sys_sendmmsg+0x9c/0x100 net/socket.c:2751
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4f3f07cee9
RSP: 002b:00007f4f3fd4e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f4f3f1b3fa0 RCX: 00007f4f3f07cee9
RDX: 0000000000000651 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007f4f3f0c947f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f4f3f1b3fa0 R15: 00007fffb58f1b78
task:kworker/u8:3 state:R running task stack:22632 pid:51 tgid:51 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5722
Code: c1 05 9a bf 96 7e 83 f8 01 0f 85 ea 02 00 00 9c 58 f6 c4 02 0f 85 d5 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90000bc7aa0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000178f56 RCX: 0000000072631b06
RDX: 0000000000000001 RSI: ffffffff8b2cb0e0 RDI: ffffffff8b8fffc0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff284d658
R10: ffffffff9426b2c7 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8dbb18e0 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x16e/0x10f0 net/batman-adv/network-coding.c:719
process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: rcu_preempt kthread starved for 10582 jiffies! g41529 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:27584 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2000
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2202
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:112
sched: RT throttling activated