INFO: task syz.4.2162:13504 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.2162      state:D stack:27760 pid:13504 ppid:  4184 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11c3/0x4350 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537
 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 register_trace_uprobe+0x2e/0x1100 kernel/trace/trace_uprobe.c:497
 __trace_uprobe_create+0x9c4/0xb50 kernel/trace/trace_uprobe.c:702
 trace_probe_create+0xc4/0x130 kernel/trace/trace_probe.c:1241
 dyn_event_create+0x44/0x60 kernel/trace/trace_dynevent.c:137
 create_or_delete_trace_uprobe+0x61/0x90 kernel/trace/trace_uprobe.c:732
 trace_parse_run_command+0x1a8/0x2c0 kernel/trace/trace.c:10201
 vfs_write+0x304/0xd70 fs/read_write.c:592
 ksys_write+0x153/0x260 fs/read_write.c:647
 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: 0033:0x7fe6cc518159
RSP: 002b:00007fe6ca770028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe6cc79ffa0 RCX: 00007fe6cc518159
RDX: 000000000000000f RSI: 0000200000000180 RDI: 0000000000000004
RBP: 00007fe6cc5af06b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe6cc7a0038 R14: 00007fe6cc79ffa0 R15: 00007ffcf1b8a3b8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffffffff8c31ef60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3939:
 #0: ffff88814ce1b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
 #1: ffffc90002cf62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x594/0x1a50 drivers/tty/n_tty.c:2158
2 locks held by kworker/1:13/4852:
 #0: ffff8880b903a358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x98/0x130 kernel/sched/core.c:483
 #1: ffff8880b9127888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x517/0x810 kernel/sched/psi.c:891
3 locks held by kworker/u4:1/9859:
1 lock held by syz-executor/11613:
5 locks held by syz.0.2116/13353:
4 locks held by syz.4.2162/13504:
 #0: ffff88801ef474f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2bf/0x370 fs/file.c:1056
 #1: ffff8881419c6460 (sb_writers#20){.+.+}-{0:0}, at: vfs_write+0x296/0xd70 fs/read_write.c:590
 #2: ffffffff8c37dca8 (dyn_event_ops_mutex){+.+.}-{3:3}, at: dyn_event_create+0x1c/0x60 kernel/trace/trace_dynevent.c:136
 #3: ffffffff8c36c7c8 (event_mutex){+.+.}-{3:3}, at: register_trace_uprobe+0x2e/0x1100 kernel/trace/trace_uprobe.c:497
1 lock held by syz.7.2266/13969:
 #0: ffffffff8c36c7c8 (event_mutex){+.+.}-{3:3}, at: subsystem_open+0x44/0x3a0 kernel/trace/trace_events.c:1874
3 locks held by syz.9.2360/14498:
 #0: ffff8880389665f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2bf/0x370 fs/file.c:1056
 #1: ffff8881419c6460 (sb_writers#20){.+.+}-{0:0}, at: vfs_write+0x296/0xd70 fs/read_write.c:590
 #2: ffffffff8c37dca8 (dyn_event_ops_mutex){+.+.}-{3:3}, at: create_dyn_event+0x79/0x140 kernel/trace/trace_dynevent.c:150
3 locks held by syz.5.2474/15092:
 #0: ffff888078d56370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2bf/0x370 fs/file.c:1056
 #1: ffff8881419c6460 (sb_writers#20){.+.+}-{0:0}, at: vfs_write+0x296/0xd70 fs/read_write.c:590
 #2: ffffffff8c37dca8 (dyn_event_ops_mutex){+.+.}-{3:3}, at: create_dyn_event+0x79/0x140 kernel/trace/trace_dynevent.c:150
1 lock held by syz.5.2474/15095:
 #0: ffff888078d56370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2bf/0x370 fs/file.c:1056
1 lock held by syz.5.2474/15097:
 #0: ffffffff8c361568 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:451 [inline]
 #0: ffffffff8c361568 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:501 [inline]
 #0: ffffffff8c361568 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4876
3 locks held by syz.1.2570/15636:
2 locks held by dhcpcd/15675:
 #0: ffff888040174120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1744 [inline]
 #0: ffff888040174120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xd60 net/packet/af_packet.c:3243
 #1: ffffffff8c3239e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
 #1: ffffffff8c3239e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2d1/0x750 kernel/rcu/tree_exp.h:845
1 lock held by rm/15687:

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
 watchdog+0xe1b/0xe60 kernel/hung_task.c:369
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 15690 Comm: dhcpcd-run-hook Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:unlink_anon_vmas+0x8d/0x660 mm/rmap.c:-1
Code: c0 22 48 89 44 24 20 4c 89 e3 48 c1 eb 03 48 b8 00 00 00 00 00 fc ff df 80 3c 03 00 74 08 4c 89 e7 e8 a7 96 0c 00 49 8b 04 24 <48> 89 44 24 10 4d 8d 74 24 f8 4c 89 f0 48 c1 e8 03 48 b9 00 00 00
RSP: 0018:ffffc90003e3fa20 EFLAGS: 00000246
RAX: ffff888063723940 RBX: 1ffff1100c6e4602 RCX: ffff88802a415940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888039b1f318
RBP: ffff888039b1fd68 R08: ffff8880172437b7 R09: 1ffff11002e486f6
R10: dffffc0000000000 R11: ffffed1002e486f7 R12: ffff888063723010
R13: 0000000000000000 R14: ffff888039b1f318 R15: ffff888039b1f390
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff8eeab1b8 CR3: 0000000019dcf000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 free_pgtables+0x177/0x2a0 mm/memory.c:426
 exit_mmap+0x3c8/0x640 mm/mmap.c:3217
 __mmput+0x115/0x390 kernel/fork.c:1133
 exit_mm+0x632/0x7b0 kernel/exit.c:557
 do_exit+0x5b8/0x2110 kernel/exit.c:877
 do_group_exit+0x12c/0x2f0 kernel/exit.c:1004
 __do_sys_exit_group kernel/exit.c:1015 [inline]
 __se_sys_exit_group kernel/exit.c:1013 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1013
 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: 0033:0x7f72523d76c5
Code: Unable to access opcode bytes at RIP 0x7f72523d769b.
RSP: 002b:00007fff8eeab858 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fff8eeabb04 RCX: 00007f72523d76c5
RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
RBP: 0000000000000003 R08: 00007fff8eeab950 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007fff8eeabb90 R14: 00007f72525df000 R15: 000055e6aac1ed98
 </TASK>