rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 1, t=10502 jiffies, g=30977, q=14)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294981694-4294971192), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g30977 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:28576 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4d90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1966
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2139
kthread+0x405/0x4f0 kernel/kthread.c:345
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: 5949 Comm: syz-executor.1 Not tainted 5.16.0-rc4-next-20211210-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:trace_lock_release include/trace/events/lock.h:58 [inline]
RIP: 0010:lock_release+0x516/0x720 kernel/locking/lockdep.c:5650
Code: 14 11 38 d0 7c 08 84 d2 0f 85 da 01 00 00 44 8b 05 e7 ae 35 0c 45 85 c0 0f 85 a5 fe ff ff e9 59 e7 b3 07 65 ff 05 6a 84 a5 7e <48> 8b 05 a3 40 21 0c e8 3e df 05 00 85 c0 74 17 65 ff 0d 53 84 a5
RSP: 0018:ffffc90000007a38 EFLAGS: 00000083
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff815ce721
RDX: fffffbfff1b24ce3 RSI: 0000000000000008 RDI: ffffffff8d926710
RBP: 1ffff92000000f49 R08: 0000000000000000 R09: ffffffff8d926717
R10: fffffbfff1b24ce2 R11: 0000000000000000 R12: ffffffff8bb818a0
R13: ffff888030e38bc0 R14: 00000000ffffffe4 R15: ffffc90000007b20
FS: 00007fb1105c4700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ef22000 CR3: 0000000019bc3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:273 [inline]
rcu_read_unlock include/linux/rcupdate.h:727 [inline]
__perf_event_output kernel/events/core.c:7515 [inline]
perf_event_output_forward+0x161/0x280 kernel/events/core.c:7524
__perf_event_overflow+0x13c/0x3d0 kernel/events/core.c:9224
perf_swevent_hrtimer+0x37c/0x3f0 kernel/events/core.c:10617
__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:__orc_find+0x94/0xf0 arch/x86/kernel/unwind_orc.c:59
Code: 42 0f b6 14 38 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 48 48 63 03 48 01 d8 48 39 c1 73 b0 4c 8d 63 fc 49 39 ec 73 b3 <4d> 29 ee 49 c1 fe 02 4b 8d 04 76 48 8d 04 46 48 83 c4 10 5b 5d 41
RSP: 0018:ffffc900049173e8 EFLAGS: 00000287
RAX: ffffffff812c6bd6 RBX: ffffffff8d9e4fb0 RCX: ffffffff812c6b7b
RDX: 0000000000000000 RSI: ffffffff8e0cadf8 RDI: ffffffff8d9e4f9c
RBP: ffffffff8d9e4fb0 R08: ffffffff8e0cadf8 R09: 0000000000000001
R10: fffff52000922eb6 R11: 000000000008808a R12: ffffffff8d9e4fac
R13: ffffffff8d9e4f9c R14: ffffffff8d9e4fac R15: dffffc0000000000
orc_find arch/x86/kernel/unwind_orc.c:173 [inline]
unwind_next_frame+0x32a/0x1ce0 arch/x86/kernel/unwind_orc.c:443
__unwind_start+0x51b/0x800 arch/x86/kernel/unwind_orc.c:712
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x5c/0xe0 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:436 [inline]
____kasan_kmalloc mm/kasan/common.c:515 [inline]
____kasan_kmalloc mm/kasan/common.c:474 [inline]
__kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:524
kmalloc include/linux/slab.h:581 [inline]
tty_alloc_file drivers/tty/tty_io.c:186 [inline]
tty_open+0x140/0x1000 drivers/tty/tty_io.c:2130
chrdev_open+0x266/0x770 fs/char_dev.c:414
do_dentry_open+0x4c8/0x1250 fs/open.c:824
do_open fs/namei.c:3476 [inline]
path_openat+0x1c9e/0x2940 fs/namei.c:3609
do_filp_open+0x1aa/0x400 fs/namei.c:3636
do_sys_openat2+0x16d/0x4d0 fs/open.c:1214
do_sys_open fs/open.c:1230 [inline]
__do_sys_openat fs/open.c:1246 [inline]
__se_sys_openat fs/open.c:1241 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1241
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: 0033:0x7fb111c4ee99
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:00007fb1105c4168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fb111d61f60 RCX: 00007fb111c4ee99
RDX: 0000000000000000 RSI: 0000000020000640 RDI: ffffffffffffff9c
RBP: 00007fb111ca8ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffd13a963f R14: 00007fb1105c4300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 14 11 adc $0x11,%al
2: 38 d0 cmp %dl,%al
4: 7c 08 jl 0xe
6: 84 d2 test %dl,%dl
8: 0f 85 da 01 00 00 jne 0x1e8
e: 44 8b 05 e7 ae 35 0c mov 0xc35aee7(%rip),%r8d # 0xc35aefc
15: 45 85 c0 test %r8d,%r8d
18: 0f 85 a5 fe ff ff jne 0xfffffec3
1e: e9 59 e7 b3 07 jmpq 0x7b3e77c
23: 65 ff 05 6a 84 a5 7e incl %gs:0x7ea5846a(%rip) # 0x7ea58494
* 2a: 48 8b 05 a3 40 21 0c mov 0xc2140a3(%rip),%rax # 0xc2140d4 <-- trapping instruction
31: e8 3e df 05 00 callq 0x5df74
36: 85 c0 test %eax,%eax
38: 74 17 je 0x51
3a: 65 gs
3b: ff .byte 0xff
3c: 0d .byte 0xd
3d: 53 push %rbx
3e: 84 .byte 0x84
3f: a5 movsl %ds:(%rsi),%es:(%rdi)