INFO: task syz-executor197:8364 blocked for more than 140 seconds.
Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor197 D29984 8364 8094 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
__mutex_lock_common kernel/locking/mutex.c:1016 [inline]
__mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078
mutex_lock_double kernel/events/core.c:10470 [inline]
__perf_event_ctx_lock_double kernel/events/core.c:10529 [inline]
__do_sys_perf_event_open kernel/events/core.c:10784 [inline]
__se_sys_perf_event_open+0x1863/0x2720 kernel/events/core.c:10549
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f70ca9cea99
Code: Bad RIP value.
RSP: 002b:00007f70ca95f318 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f70caa563f8 RCX: 00007f70ca9cea99
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000020000000
RBP: 00007f70caa563f0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 00007f70caa563fc
R13: 00007fff9b5fadef R14: 00007f70ca95f400 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/1569:
#0: 00000000c0fe97e1 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by in:imklog/7784:
#0: 000000000b90b42f (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
2 locks held by syz-executor197/8364:
#0: 00000000be37198f (&cpuctx_mutex){+.+.}, at: mutex_lock_double kernel/events/core.c:10469 [inline]
#0: 00000000be37198f (&cpuctx_mutex){+.+.}, at: __perf_event_ctx_lock_double kernel/events/core.c:10529 [inline]
#0: 00000000be37198f (&cpuctx_mutex){+.+.}, at: __do_sys_perf_event_open kernel/events/core.c:10784 [inline]
#0: 00000000be37198f (&cpuctx_mutex){+.+.}, at: __se_sys_perf_event_open+0x1856/0x2720 kernel/events/core.c:10549
#1: 00000000be37198f (&cpuctx_mutex/1){+.+.}, at: mutex_lock_double kernel/events/core.c:10470 [inline]
#1: 00000000be37198f (&cpuctx_mutex/1){+.+.}, at: __perf_event_ctx_lock_double kernel/events/core.c:10529 [inline]
#1: 00000000be37198f (&cpuctx_mutex/1){+.+.}, at: __do_sys_perf_event_open kernel/events/core.c:10784 [inline]
#1: 00000000be37198f (&cpuctx_mutex/1){+.+.}, at: __se_sys_perf_event_open+0x1863/0x2720 kernel/events/core.c:10549
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1569 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x991/0xe60 kernel/hung_task.c:287
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4694 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:97
Code: ff 48 89 df e8 11 dd 35 00 e9 ab fe ff ff 4c 89 ef e8 04 dd 35 00 e9 23 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <48> 8b 34 24 65 48 8b 04 25 c0 df 01 00 65 8b 15 cc 59 9f 7e 81 e2
RSP: 0018:ffff8880a0f07a28 EFLAGS: 00000246
RAX: 1ffffffff10df738 RBX: dffffc0000000000 RCX: 1ffff110141e0f60
RDX: 0000000000000000 RSI: 00000000000000ac RDI: ffffffff886fb9c0
RBP: ffff8880a0f07b00 R08: 0000000000000000 R09: 000000007fff0000
R10: 0000000000000004 R11: 0000000000000000 R12: ffffffff886fb460
R13: ffffed10141e0f62 R14: ffffc90001ad2040 R15: 00000000000000ac
FS: 00007f08c08078c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f08bdbd7000 CR3: 00000000a1166000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
___bpf_prog_run+0x22ab/0x4e80 kernel/bpf/core.c:1088