INFO: task syz-executor311:5068 blocked for more than 143 seconds.
Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor311 state:D stack:20840 pid:5068 ppid:5065 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
xlog_grant_head_wait+0x317/0x530 fs/xfs/xfs_log.c:307
xlog_grant_head_check+0x28c/0x470
xfs_log_reserve+0x310/0x6f0 fs/xfs/xfs_log.c:486
xfs_trans_reserve+0x231/0x690 fs/xfs/xfs_trans.c:194
xfs_trans_alloc+0x410/0x610 fs/xfs/xfs_trans.c:283
xfs_sync_sb+0x89/0x170 fs/xfs/libxfs/xfs_sb.c:1005
xfs_log_cover fs/xfs/xfs_log.c:1300 [inline]
xfs_log_quiesce+0x396/0x660 fs/xfs/xfs_log.c:1109
xfs_log_clean+0xa0/0x970 fs/xfs/xfs_log.c:1116
xfs_log_unmount+0x28/0x1d0 fs/xfs/xfs_log.c:1131
xfs_unmountfs+0x1d6/0x280 fs/xfs/xfs_mount.c:1096
xfs_fs_put_super+0x72/0x2d0 fs/xfs/xfs_super.c:1115
generic_shutdown_super+0x130/0x310 fs/super.c:492
kill_block_super+0x79/0xd0 fs/super.c:1386
deactivate_locked_super+0xa7/0xf0 fs/super.c:332
cleanup_mnt+0x494/0x520 fs/namespace.c:1291
task_work_run+0x243/0x300 kernel/task_work.c:179
ptrace_notify+0x29a/0x340 kernel/signal.c:2354
ptrace_report_syscall include/linux/ptrace.h:411 [inline]
ptrace_report_syscall_exit include/linux/ptrace.h:473 [inline]
syscall_exit_work+0x8c/0xe0 kernel/entry/common.c:251
syscall_exit_to_user_mode_prepare+0x63/0xc0 kernel/entry/common.c:278
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0xa/0x60 kernel/entry/common.c:296
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbf76958c17
RSP: 002b:00007ffc10105898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fbf76958c17
RDX: 00007ffc10105959 RSI: 000000000000000a RDI: 00007ffc10105950
RBP: 00007ffc10105950 R08: 00000000ffffffff R09: 00007ffc10105730
R10: 0000555555f88653 R11: 0000000000000202 R12: 00007ffc101069b0
R13: 0000555555f885f0 R14: 00007ffc101058c0 R15: 0000000000000001
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d326e90 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d327690 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d326cc0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4751:
#0: ffff88802c693098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
1 lock held by syz-executor311/5068:
#0: ffff88802076a0e0 (&type->s_umount_key#42){+.+.}-{3:3}, at: deactivate_super+0x96/0xd0 fs/super.c:362
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcd5/0xd20 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 46 Comm: kworker/u4:3 Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:236 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x33/0xa0 kernel/kcov.c:311
Code: 40 98 03 00 65 8b 0d 04 b8 77 7e f7 c1 00 01 ff 00 74 11 f7 c1 00 01 00 00 74 76 83 ba 6c 15 00 00 00 74 6d 8b 8a 48 15 00 00 <83> f9 03 75 62 48 8b 8a 50 15 00 00 44 8b 8a 4c 15 00 00 49 c1 e1
RSP: 0018:ffffc90000b777c0 EFLAGS: 00000246
RAX: 1ffff1100250cb55 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888018319d40 RSI: 0000000000000000 RDI: 0000000000000080
RBP: 0000000012865007 R08: ffffffff81cba417 R09: fffff9400000f049
R10: fffff9400000f049 R11: 1ffffd400000f048 R12: 1ffff1100250c8aa
R13: dffffc0000000000 R14: ffff888012868000 R15: ffff888012865aa8
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005609aaa09d90 CR3: 000000000d08e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pmd_trans_huge arch/x86/include/asm/pgtable.h:237 [inline]
walk_to_pmd+0x187/0x240 mm/memory.c:1794
__get_locked_pte+0x24/0x1c0 mm/memory.c:1801
get_locked_pte include/linux/mm.h:2294 [inline]
__text_poke+0x228/0x900 arch/x86/kernel/alternative.c:1586
text_poke arch/x86/kernel/alternative.c:1671 [inline]
text_poke_bp_batch+0x64c/0x850 arch/x86/kernel/alternative.c:2027
text_poke_flush arch/x86/kernel/alternative.c:2131 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:2138
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x129/0x250 kernel/jump_label.c:205
static_key_enable+0x16/0x20 kernel/jump_label.c:218
toggle_allocation_gate+0xb1/0x240 mm/kfence/core.c:799
process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308