syzbot

INFO: task kworker/0:1:8 blocked for more than 143 seconds.
      Not tainted 6.9.0-rc7-syzkaller-00056-g45db3ab70092 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1     state:D stack:24048 pid:8     tgid:8     ppid:2      flags:0x00004000
Workqueue: gfs2_recovery gfs2_recover_func
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6838
 io_schedule+0x8d/0x110 kernel/sched/core.c:9044
 folio_wait_bit_common+0x882/0x12b0 mm/filemap.c:1283
 folio_wait_locked include/linux/pagemap.h:1123 [inline]
 gfs2_jhead_process_page+0x194/0x750 fs/gfs2/lops.c:470
 gfs2_find_jhead+0xd68/0xf10 fs/gfs2/lops.c:587
 gfs2_recover_func+0x6c1/0x1f20 fs/gfs2/recovery.c:460
 process_one_work kernel/workqueue.c:3267 [inline]
 process_scheduled_works+0xa12/0x17c0 kernel/workqueue.c:3348
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3429
 kthread+0x2f2/0x390 kernel/kthread.c:388
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task syz-executor383:5085 blocked for more than 143 seconds.
      Not tainted 6.9.0-rc7-syzkaller-00056-g45db3ab70092 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor383 state:D stack:22384 pid:5085  tgid:5085  ppid:5084   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6838
 bit_wait+0x12/0xd0 kernel/sched/wait_bit.c:199
 __wait_on_bit+0xb2/0x2f0 kernel/sched/wait_bit.c:49
 out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
 wait_on_bit include/linux/wait_bit.h:76 [inline]
 gfs2_recover_journal+0xf2/0x160 fs/gfs2/recovery.c:577
 init_journal+0x1855/0x2420 fs/gfs2/ops_fstype.c:831
 init_inodes+0xdc/0x320 fs/gfs2/ops_fstype.c:884
 gfs2_fill_super+0x1edb/0x26c0 fs/gfs2/ops_fstype.c:1263
 get_tree_bdev+0x3f9/0x570 fs/super.c:1614
 gfs2_get_tree+0x54/0x220 fs/gfs2/ops_fstype.c:1341
 vfs_get_tree+0x92/0x2a0 fs/super.c:1779
 do_new_mount+0x2be/0xb40 fs/namespace.c:3352
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe08f698d7a
RSP: 002b:00007ffcab0ae1e8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffcab0ae200 RCX: 00007fe08f698d7a
RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007ffcab0ae200
RBP: 0000000000000004 R08: 00007ffcab0ae240 R09: 0000000000037f88
R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000
R13: 00007ffcab0ae240 R14: 0000000000000003 R15: 0000000001000000
 </TASK>

Showing all locks held in the system:
2 locks held by kworker/0:1/8:
 #0: ffff8880183dd948 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3242 [inline]
 #0: ffff8880183dd948 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3348
 #1: ffffc900000d7d00 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3243 [inline]
 #1: ffffc900000d7d00 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3348
1 lock held by khungtaskd/29:
 #0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 #0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
 #0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
1 lock held by klogd/4524:
 #0: ffff8880b953e698 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
2 locks held by getty/4837:
 #0: ffff88802aae50a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor383/5085:
 #0: ffff8880231820e0 (&type->s_umount_key#42/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 fs/super.c:343

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

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc7-syzkaller-00056-g45db3ab70092 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xfde/0x1020 kernel/hung_task.c:380
 kthread+0x2f2/0x390 kernel/kthread.c:388
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 50 Comm: kworker/u8:3 Not tainted 6.9.0-rc7-syzkaller-00056-g45db3ab70092 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:206
Code: 8b 3d 4c f9 3e 0c 48 89 de 5b e9 23 2c 59 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 c0 d3 03 00 65 8b 15 30 cb 6d 7e f7 c2 00 01 ff 00
RSP: 0018:ffffc90000ba7708 EFLAGS: 00000246
RAX: ffffffff81e1f6aa RBX: 0000000000000000 RCX: ffff8880151cbc01
RDX: ffffc90000ba78a0 RSI: 00002aaaaaaab000 RDI: ffff888015070000
RBP: ffffc90000ba7910 R08: ffffffff813579e2 R09: 1ffffd400000f788
R10: dffffc0000000000 R11: fffff9400000f789 R12: ffff888015070000
R13: ffffffffffffffff R14: ffffc90000ba78a0 R15: 00002aaaaaaab000
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b57d3fa600 CR3: 000000000e134000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 __get_locked_pte+0x1a/0xc0 mm/memory.c:1970
 get_locked_pte include/linux/mm.h:2705 [inline]
 __text_poke+0x2c5/0xd30 arch/x86/kernel/alternative.c:1900
 text_poke arch/x86/kernel/alternative.c:1985 [inline]
 text_poke_bp_batch+0x265/0xb30 arch/x86/kernel/alternative.c:2293
 text_poke_flush arch/x86/kernel/alternative.c:2487 [inline]
 text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2494
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 static_key_disable_cpuslocked+0xce/0x1c0 kernel/jump_label.c:235
 static_key_disable+0x1a/0x20 kernel/jump_label.c:243
 toggle_allocation_gate+0x1b8/0x250 mm/kfence/core.c:831
 process_one_work kernel/workqueue.c:3267 [inline]
 process_scheduled_works+0xa12/0x17c0 kernel/workqueue.c:3348
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3429
 kthread+0x2f2/0x390 kernel/kthread.c:388
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.064 msecs