rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (1 GPs behind) idle=127/1/0x4000000000000000 softirq=73393/73394 fqs=53
(t=10501 jiffies g=144049 q=237)
rcu: rcu_preempt kthread starved for 10395 jiffies! g144049 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:28656 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 30836 Comm: syz-executor.0 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:unwind_next_frame+0x49c/0x1ce0 arch/x86/kernel/unwind_orc.c:464
Code: ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 83 11 00 00 41 c7 06 00 00 00 00 31 c0 e9 f4 fb ff ff 48 ba 00 00 00 00 00 fc ff df <4c> 89 f9 48 c1 e9 03 0f b6 34 11 49 8d 4f 01 48 89 cf 48 c1 ef 03
RSP: 0018:ffffc90003757540 EFLAGS: 00000202
RAX: 0000000000000048 RBX: 1ffff920006eaeb0 RCX: ffffffff81e259e9
RDX: dffffc0000000000 RSI: ffffffff8dfa6294 RDI: ffffffff8d8740c8
RBP: 0000000000000001 R08: ffffffff8dfa6294 R09: 0000000000000001
R10: fffff520006eaece R11: 000000000008608a R12: ffffc90003757660
R13: ffffc9000375764d R14: ffffc90003757618 R15: ffffffff8dfa6298
FS: 00007fdf3354e700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdf3352d718 CR3: 00000000684a9000 CR4: 00000000003526e0
DR0: 00000000000043ce DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
____kasan_kmalloc mm/kasan/common.c:472 [inline]
__kasan_kmalloc+0xa6/0xd0 mm/kasan/common.c:522
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: 0033:0x7fdf3601aae9
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:00007fdf3354e188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007fdf3612e0e0 RCX: 00007fdf3601aae9
RDX: 0000000000000000 RSI: 000000000000688c RDI: 0000000000000003
RBP: 00007fdf36074f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff44f15aef R14: 00007fdf3354e300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 30828 Comm: syz-executor.0 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:prefetchw arch/x86/include/asm/processor.h:741 [inline]
RIP: 0010:slab_alloc mm/slab.c:3319 [inline]
RIP: 0010:kmem_cache_alloc_trace+0x193/0x4a0 mm/slab.c:3573
Code: 0f 84 3e 01 00 00 4d 85 ff 48 89 54 24 10 0f 85 d4 01 00 00 9c 58 f6 c4 02 0f 85 e3 01 00 00 4d 85 ff 74 01 fb 48 8b 74 24 10 <0f> 0d 0e 0f 1f 44 00 00 48 83 7b 50 00 0f 84 83 00 00 00 44 23 25
RSP: 0018:ffffc900035b7980 EFLAGS: 00000206
RAX: 0000000000000002 RBX: ffff888010c43400 RCX: 1ffffffff1fbb786
RDX: 0000000000000000 RSI: ffff8881819b1080 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff8fd60b47
R10: 0000000000000001 R11: dffffc0000000000 R12: 0000000000400cc0
R13: 0000000000400cc0 R14: 0000000000000020 R15: 0000000000000200
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: 0033:0x7fdf3601aae9
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:00007fdf33590188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007fdf3612df60 RCX: 00007fdf3601aae9
RDX: 0000000000000000 RSI: 000000000000688c RDI: 0000000000000003
RBP: 00007fdf36074f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff44f15aef R14: 00007fdf33590300 R15: 0000000000022000
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 03 0f add (%rdi),%ecx
2: b6 04 mov $0x4,%dh
4: 02 84 c0 74 08 3c 03 add 0x33c0874(%rax,%rax,8),%al
b: 0f 8e 83 11 00 00 jle 0x1194
11: 41 c7 06 00 00 00 00 movl $0x0,(%r14)
18: 31 c0 xor %eax,%eax
1a: e9 f4 fb ff ff jmpq 0xfffffc13
1f: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
26: fc ff df
* 29: 4c 89 f9 mov %r15,%rcx <-- trapping instruction
2c: 48 c1 e9 03 shr $0x3,%rcx
30: 0f b6 34 11 movzbl (%rcx,%rdx,1),%esi
34: 49 8d 4f 01 lea 0x1(%r15),%rcx
38: 48 89 cf mov %rcx,%rdi
3b: 48 c1 ef 03 shr $0x3,%rdi