rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (1 GPs behind) idle=df9/1/0x4000000000000000 softirq=49745/49746 fqs=33
(t=10501 jiffies g=88081 q=144)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10426 jiffies! g88081 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=33708
rcu: rcu_preempt kthread starved for 10429 jiffies! g88081 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28944 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1955
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2128
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 22906 Comm: syz-executor.4 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:3694 [inline]
RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3714 [inline]
RIP: 0010:validate_chain kernel/locking/lockdep.c:3769 [inline]
RIP: 0010:__lock_acquire+0x16be/0x54a0 kernel/locking/lockdep.c:5027
Code: eb 06 48 83 eb 08 74 40 48 8d 7b 18 48 89 f8 48 c1 e8 03 80 3c 10 00 0f 85 31 2a 00 00 48 8b 43 18 49 39 c7 0f 84 ec f5 ff ff <48> 8d 7b 08 48 89 f8 48 c1 e8 03 80 3c 10 00 0f 85 fc 29 00 00 48
RSP: 0018:ffffc90012cef730 EFLAGS: 00000017
RAX: e8c5bc5f8a3f7979 RBX: ffffffff8f1ec7a0 RCX: ffffffff815be57f
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff8f1ec7b8
RBP: 000000000000980d R08: 0000000000000000 R09: ffffffff8fd60a17
R10: fffffbfff1fac142 R11: 0000000000000000 R12: ffff888088492b30
R13: ffff888088492080 R14: 0000000000000000 R15: 430a834559a6d7b3
FS: 00007fccf4b77700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f005bc0e718 CR3: 000000002244d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
fs_reclaim_acquire mm/page_alloc.c:4552 [inline]
fs_reclaim_acquire+0xd2/0x160 mm/page_alloc.c:4543
might_alloc include/linux/sched/mm.h:227 [inline]
slab_pre_alloc_hook mm/slab.h:492 [inline]
slab_alloc mm/slab.c:3306 [inline]
kmem_cache_alloc_trace+0x3c/0x4a0 mm/slab.c:3573
kmalloc include/linux/slab.h:590 [inline]
io_add_buffers fs/io_uring.c:4405 [inline]
io_provide_buffers fs/io_uring.c:4439 [inline]
io_issue_sqe+0x2887/0x7010 fs/io_uring.c:6705
__io_queue_sqe fs/io_uring.c:6974 [inline]
io_queue_sqe fs/io_uring.c:7016 [inline]
io_submit_sqe fs/io_uring.c:7219 [inline]
io_submit_sqes+0x1bca/0x8a20 fs/io_uring.c:7325
__do_sys_io_uring_enter+0xf6e/0x1f50 fs/io_uring.c:10039
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fccf7664ae9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fccf4b77188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007fccf77781a0 RCX: 00007fccf7664ae9
RDX: 0000000000000000 RSI: 00000000000045f5 RDI: 0000000000000004
RBP: 00007fccf76bef6d R08: 0000000000000000 R09: 0000000000001800
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf8e612df R14: 00007fccf4b77300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 22900 Comm: syz-executor.4 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343
print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2597
update_process_times+0x16d/0x200 kernel/time/timer.c:1785
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1421
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:kasan_set_track mm/kasan/common.c:46 [inline]
RIP: 0010:set_alloc_info mm/kasan/common.c:434 [inline]
RIP: 0010:____kasan_kmalloc mm/kasan/common.c:513 [inline]
RIP: 0010:____kasan_kmalloc mm/kasan/common.c:472 [inline]
RIP: 0010:__kasan_kmalloc+0x96/0xd0 mm/kasan/common.c:522
Code: fe 48 83 c7 01 e8 aa 22 00 00 49 63 44 24 7c 85 c0 74 2c 48 01 d8 49 89 c4 74 24 65 48 8b 04 25 40 70 02 00 8b 80 c8 05 00 00 01 00 00 00 89 ef 41 89 04 24 e8 0a ff ff ff 41 89 44 24 04 48
RSP: 0018:ffffc90012ca7958 EFLAGS: 00000286
RAX: 0000000000005974 RBX: ffff88818304e580 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000000000fc RDI: ffffed1030609cb4
RBP: 0000000000400cc0 R08: ffffc90012ca7990 R09: ffffed1030609cb4
R10: 0000000000000001 R11: dffffc0000000000 R12: ffff88818304e5a0
R13: 0000000000000020 R14: 0000000000000020 R15: 0000000000000001
kasan_kmalloc include/linux/kasan.h:269 [inline]
kmem_cache_alloc_trace+0x1ea/0x4a0 mm/slab.c:3575
kmalloc include/linux/slab.h:590 [inline]
io_add_buffers fs/io_uring.c:4405 [inline]
io_provide_buffers fs/io_uring.c:4439 [inline]
io_issue_sqe+0x2887/0x7010 fs/io_uring.c:6705
__io_queue_sqe fs/io_uring.c:6974 [inline]
io_queue_sqe fs/io_uring.c:7016 [inline]
io_submit_sqe fs/io_uring.c:7219 [inline]
io_submit_sqes+0x1bca/0x8a20 fs/io_uring.c:7325
__do_sys_io_uring_enter+0xf6e/0x1f50 fs/io_uring.c:10039
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fccf7664ae9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fccf4bda188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007fccf7777f60 RCX: 00007fccf7664ae9
RDX: 0000000000000000 RSI: 00000000000045f5 RDI: 0000000000000004
RBP: 00007fccf76bef6d R08: 0000000000000000 R09: 0000000000001800
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf8e612df R14: 00007fccf4bda300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: eb 06 jmp 0x8
2: 48 83 eb 08 sub $0x8,%rbx
6: 74 40 je 0x48
8: 48 8d 7b 18 lea 0x18(%rbx),%rdi
c: 48 89 f8 mov %rdi,%rax
f: 48 c1 e8 03 shr $0x3,%rax
13: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1)
17: 0f 85 31 2a 00 00 jne 0x2a4e
1d: 48 8b 43 18 mov 0x18(%rbx),%rax
21: 49 39 c7 cmp %rax,%r15
24: 0f 84 ec f5 ff ff je 0xfffff616
* 2a: 48 8d 7b 08 lea 0x8(%rbx),%rdi <-- trapping instruction
2e: 48 89 f8 mov %rdi,%rax
31: 48 c1 e8 03 shr $0x3,%rax
35: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1)
39: 0f 85 fc 29 00 00 jne 0x2a3b
3f: 48 rex.W