syzbot

INFO: task kworker/1:1:28 blocked for more than 143 seconds.
      Not tainted 6.7.0-rc2-syzkaller-00029-g9b6de136b5f0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1     state:D stack:25264 pid:28    tgid:28    ppid:2      flags:0x00004000
Workqueue: gfs2_recovery gfs2_recover_func
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6778
 io_schedule+0x8c/0x100 kernel/sched/core.c:8998
 folio_wait_bit_common+0x881/0x12b0 mm/filemap.c:1273
 folio_wait_locked include/linux/pagemap.h:1089 [inline]
 gfs2_jhead_process_page+0x194/0x750 fs/gfs2/lops.c:477
 gfs2_find_jhead+0xd68/0xf10 fs/gfs2/lops.c:594
 gfs2_recover_func+0x6ba/0x1f10 fs/gfs2/recovery.c:460
 process_one_work kernel/workqueue.c:2630 [inline]
 process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2703
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2784
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
INFO: task syz-executor227:5055 blocked for more than 143 seconds.
      Not tainted 6.7.0-rc2-syzkaller-00029-g9b6de136b5f0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor227 state:D stack:22904 pid:5055  tgid:5055  ppid:5054   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6778
 bit_wait+0x12/0xc0 kernel/sched/wait_bit.c:199
 __wait_on_bit+0xac/0x2e0 kernel/sched/wait_bit.c:49
 out_of_line_wait_on_bit+0x1d4/0x250 kernel/sched/wait_bit.c:64
 wait_on_bit include/linux/wait_bit.h:76 [inline]
 gfs2_recover_journal+0xf2/0x150 fs/gfs2/recovery.c:577
 init_journal+0x1841/0x23f0 fs/gfs2/ops_fstype.c:831
 init_inodes+0xdc/0x310 fs/gfs2/ops_fstype.c:884
 gfs2_fill_super+0x1ebe/0x26b0 fs/gfs2/ops_fstype.c:1263
 get_tree_bdev+0x416/0x5b0 fs/super.c:1598
 gfs2_get_tree+0x54/0x210 fs/gfs2/ops_fstype.c:1341
 vfs_get_tree+0x8c/0x2a0 fs/super.c:1771
 do_new_mount+0x28f/0xae0 fs/namespace.c:3337
 do_mount fs/namespace.c:3677 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3863
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f8c11842daa
RSP: 002b:00007fff0e02b5e8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fff0e02b600 RCX: 00007f8c11842daa
RDX: 0000000020021140 RSI: 0000000020021180 RDI: 00007fff0e02b600
RBP: 0000000000000004 R08: 00007fff0e02b640 R09: 0000000000021177
R10: 0000000000008000 R11: 0000000000000282 R12: 0000000000008000
R13: 00007fff0e02b640 R14: 0000000000000003 R15: 0000000001000000
 </TASK>

Showing all locks held in the system:
2 locks held by kworker/1:1/28:
 #0: ffff888014722938 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
 #0: ffff888014722938 ((wq_completion)gfs2_recovery){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2703
 #1: ffffc90000a4fd20 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
 #1: ffffc90000a4fd20 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2703
1 lock held by khungtaskd/29:
 #0: ffffffff8d92d060 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
 #0: ffffffff8d92d060 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
 #0: ffffffff8d92d060 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
2 locks held by getty/4806:
 #0: ffff888025e400a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor227/5055:
 #0: ffff8880798580e0 (&type->s_umount_key#46){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff8880798580e0 (&type->s_umount_key#46){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff8880798580e0 (&type->s_umount_key#46){+.+.}-{3:3}, at: get_tree_bdev+0x36e/0x5b0 fs/super.c:1596

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

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc2-syzkaller-00029-g9b6de136b5f0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x310 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+0xfaf/0xff0 kernel/hung_task.c:379
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 12 Comm: kworker/u4:1 Not tainted 6.7.0-rc2-syzkaller-00029-g9b6de136b5f0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Workqueue:  0x0 (events_unbound)
RIP: 0010:__pvclock_read_cycles arch/x86/include/asm/pvclock.h:88 [inline]
RIP: 0010:__pvclock_clocksource_read arch/x86/kernel/pvclock.c:77 [inline]
RIP: 0010:pvclock_clocksource_read_nowd+0x35/0xf0 arch/x86/kernel/pvclock.c:120
Code: 41 54 53 50 49 89 fe 8b 2f eb 31 45 89 fc 41 80 ff 40 73 5d 44 89 e1 48 d3 e3 4c 89 2c 24 48 89 d8 48 f7 24 24 48 0f ac d0 20 <49> 8b 4e 10 41 0f b6 56 1d 41 8b 36 39 ee 89 f5 74 5d 0f 01 f9 66
RSP: 0018:ffffc90000117858 EFLAGS: 00000006
RAX: 00000043c32c54fa RBX: 0000004a89e1bec7 RCX: 0000000000000001
RDX: 0000000000000043 RSI: 0000000000000004 RDI: ffffffff907b7040
RBP: 0000000000000004 R08: ffff8880b993c343 R09: 1ffff11017327868
R10: dffffc0000000000 R11: ffffed1017327869 R12: ffffc90000117920
R13: 00000000e8ba357a R14: ffffffff907b7040 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005621f247e680 CR3: 000000000d730000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 kvm_sched_clock_read+0x11/0x20 arch/x86/kernel/kvmclock.c:91
 sched_clock+0x19/0x60 arch/x86/kernel/tsc.c:283
 sched_clock_cpu+0x76/0x490 kernel/sched/clock.c:394
 newidle_balance+0x475/0x1080 kernel/sched/fair.c:12290
 pick_next_task_fair+0x27a/0xdd0 kernel/sched/fair.c:8444
 __pick_next_task kernel/sched/core.c:5997 [inline]
 pick_next_task kernel/sched/core.c:6072 [inline]
 __schedule+0x7ce/0x4ab0 kernel/sched/core.c:6652
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6778
 worker_thread+0xc26/0x1000 kernel/workqueue.c:2799
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.218 msecs