rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5055/1:b..l P4479/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=67769, q=213 ncpus=2)
task:udevd state:R running task stack:22504 pid:4479 ppid:1 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
preempt_schedule_irq+0xfb/0x1b0 kernel/sched/core.c:7007
irqentry_exit+0x57/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x25a/0x520 kernel/locking/lockdep.c:5757
Code: 2b 00 74 08 4c 89 f7 e8 64 c5 7b 00 f6 44 24 61 02 0f 85 84 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:ffffc90003197320 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000632e70 RCX: ffffffff816d1d87
RDX: 0000000000000000 RSI: ffffffff8b0ab6a0 RDI: ffffffff8b5986e0
RBP: ffffc90003197468 R08: dffffc0000000000 R09: 1ffffffff20dc870
R10: dffffc0000000000 R11: fffffbfff20dc871 R12: 1ffff92000632e6c
R13: dffffc0000000000 R14: ffffc90003197380 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
rcu_read_lock include/linux/rcupdate.h:749 [inline]
is_bpf_text_address+0x42/0x2a0 kernel/bpf/core.c:729
kernel_text_address+0xa3/0xe0 kernel/extable.c:125
__kernel_text_address+0xd/0x40 kernel/extable.c:79
unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x11f/0x1a0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522
____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1800 [inline]
slab_free_freelist_hook mm/slub.c:1826 [inline]
slab_free mm/slub.c:3809 [inline]
__kmem_cache_free+0x25f/0x3b0 mm/slub.c:3822
tomoyo_path_perm+0x5ab/0x730 security/tomoyo/file.c:842
security_inode_getattr+0xd3/0x120 security/security.c:2153
vfs_getattr+0x2a/0x3a0 fs/stat.c:169
vfs_statx+0x198/0x4c0 fs/stat.c:244
vfs_fstatat+0x135/0x190 fs/stat.c:295
__do_sys_newfstatat fs/stat.c:459 [inline]
__se_sys_newfstatat fs/stat.c:453 [inline]
__x64_sys_newfstatat+0x117/0x190 fs/stat.c:453
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4f833165f4
RSP: 002b:00007ffe23085858 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000555ed1d1a1af RCX: 00007f4f833165f4
RDX: 00007ffe23085868 RSI: 00007ffe23085cf8 RDI: 00000000ffffff9c
RBP: 00007ffe230858f8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe23085cf8
R13: 00007ffe23085868 R14: 0000555ed3aa0910 R15: 0000000000000000
task:syz-executor.5 state:R running task stack:20008 pid:5055 ppid:5048 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
preempt_schedule_common+0x83/0xc0 kernel/sched/core.c:6864
preempt_schedule+0xdd/0xf0 kernel/sched/core.c:6888
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3a/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
copy_pte_range mm/memory.c:1106 [inline]
copy_pmd_range mm/memory.c:1167 [inline]
copy_pud_range mm/memory.c:1204 [inline]
copy_p4d_range mm/memory.c:1228 [inline]
copy_page_range+0x3761/0x4390 mm/memory.c:1326
dup_mmap kernel/fork.c:758 [inline]
dup_mm kernel/fork.c:1686 [inline]
copy_mm+0x1207/0x1f10 kernel/fork.c:1735
copy_process+0x1d73/0x41a0 kernel/fork.c:2501
kernel_clone+0x222/0x840 kernel/fork.c:2909
__do_sys_clone kernel/fork.c:3052 [inline]
__se_sys_clone kernel/fork.c:3036 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:3036
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6170879b13
RSP: 002b:00007ffffa788128 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6170879b13
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000555556f2a750 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g67769 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=64080
rcu: rcu_preempt kthread starved for 10502 jiffies! g67769 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:26264 pid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_timeout+0x1bd/0x300 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x2c6/0x1010 kernel/rcu/tree.c:1613
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1812
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 14125 Comm: syz-executor.2 Not tainted 6.6.0-rc7-syzkaller-00142-g888cf78c29e2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:__kasan_check_read+0x6/0x20 mm/kasan/shadow.c:31
Code: 41 5f 5d c3 48 c7 c7 4f e9 a9 8c 48 89 de eb 0a 48 c7 c7 87 e9 a9 8c 4c 89 fe e8 75 0c e1 08 31 db eb d4 90 f3 0f 1e fa 89 f6 <48> 8b 0c 24 31 d2 e9 bf ea ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f
RSP: 0018:ffffc900001f06f8 EFLAGS: 00000003
RAX: 0000000000000001 RBX: 0000000000000066 RCX: 000000009421905f
RDX: 00000000fd99c40c RSI: 0000000000000008 RDI: ffffffff906e4388
RBP: ffffc900001f09c8 R08: dffffc0000000000 R09: 1ffffffff20dc870
R10: dffffc0000000000 R11: fffffbfff20dc871 R12: 00000000e9c29562
R13: ffff88803f1e4640 R14: 00000000daa19235 R15: ffff88803f1e4690
FS: 0000555555f7d480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8a4a198000 CR3: 000000006a012000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
hlock_class kernel/locking/lockdep.c:228 [inline]
__lock_acquire+0x1089/0x7f70 kernel/locking/lockdep.c:5132
lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
debug_object_activate+0x163/0x530 lib/debugobjects.c:717
debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline]
debug_activate kernel/time/hrtimer.c:477 [inline]
enqueue_hrtimer+0x30/0x310 kernel/time/hrtimer.c:1087
__run_hrtimer kernel/time/hrtimer.c:1705 [inline]
__hrtimer_run_queues+0x6c0/0xd10 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
__sysvec_apic_timer_interrupt+0x104/0x390 arch/x86/kernel/apic/apic.c:1080
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:close_fd_get_file+0x66/0x70 fs/file.c:817
Code: e7 ff 48 8b 1b 48 8d ab c0 00 00 00 48 89 ef e8 a0 b8 d5 08 48 89 df 44 89 f6 e8 25 f4 ff ff 48 89 c3 48 89 ef e8 5a bb d5 08 <48> 89 d8 5b 41 5e 5d c3 66 90 66 0f 1f 00 55 41 57 41 56 41 55 41
RSP: 0018:ffffc90009af7ed8 EFLAGS: 00000286
RAX: 0000000080000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
RBP: ffff888016b14c00 R08: ffff888016b14c03 R09: 1ffff11002d62980
R10: dffffc0000000000 R11: ffffed1002d62981 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000005 R15: 0000000000000000
__do_sys_close fs/open.c:1562 [inline]
__se_sys_close+0x19/0x220 fs/open.c:1557
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8a4a07b9da
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24
RSP: 002b:00007fff5da9ee30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f8a4a07b9da
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000001b2fb20000 R09: 0000000000000000
R10: 00000000813392c4 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001