INFO: task syz-executor663:5020 blocked for more than 143 seconds.
Not tainted 6.5.0-rc7-syzkaller-00104-g4f9e7fabf864 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor663 state:D stack:27216 pid:5020 ppid:5017 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
schedule_timeout+0x157/0x2c0 kernel/time/timer.c:2167
gfs2_gl_hash_clear+0x210/0x290 fs/gfs2/glock.c:2198
gfs2_put_super+0x4f5/0x690 fs/gfs2/super.c:657
generic_shutdown_super+0x158/0x480 fs/super.c:499
kill_block_super+0x64/0xb0 fs/super.c:1417
gfs2_kill_sb+0x361/0x410 fs/gfs2/ops_fstype.c:1795
deactivate_locked_super+0x9a/0x170 fs/super.c:330
deactivate_super+0xde/0x100 fs/super.c:361
cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254
task_work_run+0x14d/0x240 kernel/task_work.c:179
ptrace_notify+0x10c/0x130 kernel/signal.c:2376
ptrace_report_syscall include/linux/ptrace.h:411 [inline]
ptrace_report_syscall_exit include/linux/ptrace.h:473 [inline]
syscall_exit_work kernel/entry/common.c:252 [inline]
syscall_exit_to_user_mode_prepare+0x120/0x220 kernel/entry/common.c:279
__syscall_exit_to_user_mode_work kernel/entry/common.c:284 [inline]
syscall_exit_to_user_mode+0xd/0x60 kernel/entry/common.c:297
do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe6b980f347
RSP: 002b:00007ffecec90cb8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe6b980f347
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffecec90d70
RBP: 00007ffecec90d70 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffecec91dd0
R13: 000055555569a6c0 R14: 0000000000000001 R15: 431bde82d7b634db
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8c9a67f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8c9a64f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8c9a7400 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615
2 locks held by getty/4772:
#0: ffff88814b6b8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187
1 lock held by syz-executor663/5020:
#0: ffff88807e7500e0 (&type->s_umount_key#42){+.+.}-{3:3}, at: deactivate_super+0xd6/0x100 fs/super.c:360
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc7-syzkaller-00104-g4f9e7fabf864 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2ac/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf29/0x11b0 kernel/hung_task.c:379
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 47 Comm: kworker/u4:3 Not tainted 6.5.0-rc7-syzkaller-00104-g4f9e7fabf864 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:inat_get_opcode_attribute+0x37/0x50 arch/x86/lib/inat.c:15
Code: b6 db 48 b8 00 00 00 00 00 fc ff df 48 8d 3c 9d 40 42 b0 8b 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 <7c> 04 84 d2 75 09 8b 04 9d 40 42 b0 8b 5b c3 e8 25 ef b2 f7 eb f0
RSP: 0018:ffffc90000b87820 EFLAGS: 00000202
RAX: 0000000000000007 RBX: 000000000000000f RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8a272bfc RDI: ffffffff8bb0427c
RBP: ffffc90000b87ac3 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 000000000000000f
R13: 000000000000000f R14: 0000000000000001 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555c332aa780 CR3: 000000000c776000 CR4: 0000000000350ef0
Call Trace:
insn_get_prefixes+0x60c/0x1120 arch/x86/lib/insn.c:181
insn_get_opcode+0x462/0xa30 arch/x86/lib/insn.c:272
insn_get_modrm+0x30e/0x730 arch/x86/lib/insn.c:343
insn_get_sib+0x1ad/0x320 arch/x86/lib/insn.c:421
insn_get_displacement+0x23a/0x680 arch/x86/lib/insn.c:464
insn_get_immediate+0x550/0x1c50 arch/x86/lib/insn.c:632
insn_get_length arch/x86/lib/insn.c:707 [inline]
insn_decode+0x2ae/0x340 arch/x86/lib/insn.c:747
text_poke_loc_init+0xc2/0x4d0 arch/x86/kernel/alternative.c:2311
arch_jump_label_transform_queue+0x97/0x100 arch/x86/kernel/jump_label.c:138
__jump_label_update+0x125/0x420 kernel/jump_label.c:475
jump_label_update+0x32e/0x410 kernel/jump_label.c:829
static_key_disable_cpuslocked+0x154/0x1b0 kernel/jump_label.c:235
static_key_disable+0x1a/0x20 kernel/jump_label.c:243
toggle_allocation_gate mm/kfence/core.c:836 [inline]
toggle_allocation_gate+0x13f/0x250 mm/kfence/core.c:823
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
worker_thread+0x687/0x1110 kernel/workqueue.c:2751
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304