rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-....: (1 GPs behind) idle=5c3/1/0x4000000000000000 softirq=15622/15623 fqs=2100
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P7439
(detected by 0, t=10505 jiffies, g=18981, q=702)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7439 Comm: syz.5.765 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:mark_lock+0x29/0x320 kernel/locking/lockdep.c:4560
Code: 00 55 41 57 41 56 41 55 41 54 53 50 89 d5 49 89 f6 48 89 fb 49 bd 00 00 00 00 00 fc ff df 83 fa 08 75 29 4d 8d 7e 20 4c 89 f8 <48> c1 e8 03 42 0f b6 04 28 84 c0 0f 85 74 02 00 00 41 0f b6 47 02
RSP: 0018:ffffc9000314f5a0 EFLAGS: 00000046
RAX: ffff8880431546e0 RBX: ffff888043153b80 RCX: 0000000000000002
RDX: 0000000000000008 RSI: ffff8880431546c0 RDI: ffff888043153b80
RBP: 0000000000000008 R08: dffffc0000000000 R09: 1ffffffff203a819
R10: dffffc0000000000 R11: fffffbfff203a81a R12: ffff8880431546e0
R13: dffffc0000000000 R14: ffff8880431546c0 R15: ffff8880431546e0
FS: 0000555582885500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000029c0 CR3: 00000000230bd000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff1 DR7: 0000000000000600
Call Trace:
mark_usage kernel/locking/lockdep.c:4512 [inline]
__lock_acquire+0xd69/0x7d10 kernel/locking/lockdep.c:4966
lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313
rcu_read_lock include/linux/rcupdate.h:740 [inline]
BPF_PROG_RUN_ARRAY include/linux/bpf.h:1431 [inline]
trace_call_bpf+0xf9/0x5b0 kernel/trace/bpf_trace.c:127
perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10016
perf_trace_preemptirq_template+0x2aa/0x360 include/trace/events/preemptirq.h:14
trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 12 f2 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc9000314fcc0 EFLAGS: 00000206
RAX: c7c41958da4c5d00 RBX: 1ffff92000629f9c RCX: c7c41958da4c5d00
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f980
RBP: ffffc9000314fd88 R08: ffffffff901d40cf R09: 1ffffffff203a819
R10: dffffc0000000000 R11: fffffbfff203a81a R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000246 R15: ffffffff8c322fe0
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
rcu_read_unlock+0x85/0x90 include/linux/rcupdate.h:772
dput+0xc0/0x1a0 fs/dcache.c:886
__fput+0x5ee/0x930 fs/file_table.c:319
task_work_run+0x125/0x1a0 kernel/task_work.c:188
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f9a7b371819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc225a6898 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffc225a6980 RCX: 00007f9a7b371819
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 000000000002753a R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b30420000 R11: 0000000000000246 R12: 00007ffc225a69c0
R13: 00007f9a7b5eafac R14: 00000000000275f9 R15: 00007f9a7b5eafa0
task:syz.5.765 state:R running task stack:26960 pid: 7439 ppid: 4805 flags:0x0000400c
Call Trace: