rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-....: (1 GPs behind) idle=12b4/1/0x4000000000000002 softirq=130960/130961 fqs=5220
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P32526
(detected by 0, t=10502 jiffies, g=209605, q=1201 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 32526 Comm: syz.6.7355 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:trace_irq_enable_rcuidle+0xbb/0x140 include/trace/events/preemptirq.h:40
Code: b7 8c e8 08 2e e3 ff 89 c5 e8 91 e9 21 00 4c 8b 3d 2a e5 82 0c 4d 85 ff 74 28 49 83 c7 08 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 <74> 08 4c 89 ff e8 fb 80 4a 00 49 8b 3f 4c 89 f6 48 89 da e8 2d fa
RSP: 0018:ffffc9000d237b18 EFLAGS: 00000046
RAX: 1ffff1100ef71563 RBX: 0000000000000000 RCX: ffff88805a080000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880b8f3580b R09: 1ffff110171e6b01
R10: dffffc0000000000 R11: ffffed10171e6b02 R12: dffffc0000000000
R13: 0000000000000001 R14: ffffffff8a400e86 R15: ffff888077b8ab18
FS: 00005555730cd500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fea369456b8 CR3: 0000000024f61000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
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 e2 33 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc9000d237c00 EFLAGS: 00000206
RAX: 9b7d7ba82d2ed500 RBX: 1ffff92001a46f88 RCX: 9b7d7ba82d2ed500
RDX: dffffc0000000000 RSI: ffffffff8a8c1220 RDI: ffffffff8adf0f60
RBP: ffffc9000d237cf8 R08: ffffffff90af624f R09: 1ffffffff215ec49
R10: dffffc0000000000 R11: fffffbfff215ec4a R12: 0000000000000246
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff8cb32c58
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
rcu_read_unlock+0x85/0xa0 include/linux/rcupdate.h:823
dput+0xe2/0x1d0 fs/dcache.c:911
__fput+0x5e0/0x920 fs/file_table.c:328
task_work_run+0x1d0/0x260 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f0ff579c799
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:00007ffc381bc918 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffc381bca00 RCX: 00007f0ff579c799
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00000000001be759 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33120000 R11: 0000000000000246 R12: 00007ffc381bca40
R13: 00007f0ff5a15fac R14: 00000000001be999 R15: 00007f0ff5a15fa0
task:syz.6.7355 state:R running task stack:26224 pid:32526 ppid:27904 flags:0x0000400c
Call Trace: