rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-....: (1 GPs behind) idle=fa3/1/0x4000000000000000 softirq=5408/5409 fqs=2100
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4193
(detected by 1, t=10506 jiffies, g=5605, q=20)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4193 Comm: syz-executor226 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:rcu_irq_exit_irqson+0x5b/0x110 kernel/rcu/tree.c:837
Code: a0 8b 48 c7 44 24 10 70 a9 63 81 48 89 e3 48 c1 eb 03 48 b8 f1 f1 f1 f1 00 f2 f2 f2 49 be 00 00 00 00 00 fc ff df 4a 89 04 33 <66> 42 c7 44 33 09 f3 f3 42 c6 44 33 0b f3 48 c7 44 24 40 00 00 00
RSP: 0018:ffffc90002e0f9e0 EFLAGS: 00000806
RAX: f2f2f200f1f1f1f1 RBX: 1ffff920005c1f3c RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: ffffc90002e0fa88 R08: dffffc0000000000 R09: fffffbfff1ad2dd6
R10: fffffbfff1ad2dd6 R11: 1ffffffff1ad2dd5 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88801e95b898
FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5b40b04110 CR3: 000000000be8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_irq_enable_rcuidle+0x11e/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+0x84/0x480 kernel/rcu/tree_plugin.h:671
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 7d 16 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90002e0fb80 EFLAGS: 00000206
RAX: 206946afe9c5c000 RBX: 1ffff920005c1f74 RCX: 206946afe9c5c000
RDX: dffffc0000000000 RSI: ffffffff8a0b15c0 RDI: ffffffff8a599340
RBP: ffffc90002e0fc58 R08: dffffc0000000000 R09: fffffbfff1ff6e1a
R10: fffffbfff1ff6e1a R11: 1ffffffff1ff6e19 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000246 R15: ffffffff8c1208a0
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
rcu_read_unlock+0x85/0x90 include/linux/rcupdate.h:771
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
exit_task_work include/linux/task_work.h:33 [inline]
do_exit+0x61e/0x20a0 kernel/exit.c:883
do_group_exit+0x12e/0x300 kernel/exit.c:997
__do_sys_exit_group kernel/exit.c:1008 [inline]
__se_sys_exit_group kernel/exit.c:1006 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1006
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f5b40a87dc9
Code: Unable to access opcode bytes at RIP 0x7f5b40a87d9f.
RSP: 002b:00007ffc058394a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5b40a87dc9
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007f5b40b032b0 R08: ffffffffffffffb8 R09: 0000000000000006
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5b40b032b0
R13: 0000000000000000 R14: 00007f5b40b03d00 R15: 00007f5b40a59000
task:syz-executor226 state:R running task stack:25440 pid: 4193 ppid: 4192 flags:0x0000400a
Call Trace: