INFO: task kworker/1:16:4571 blocked for more than 143 seconds. Not tainted 5.15.175-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:16 state:D stack:23800 pid: 4571 ppid: 2 flags:0x00004000 Workqueue: gfs_recovery gfs2_recover_func Call Trace: context_switch kernel/sched/core.c:5027 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6373 schedule+0x11b/0x1f0 kernel/sched/core.c:6456 io_schedule+0x88/0x100 kernel/sched/core.c:8481 wait_on_page_bit_common+0xa13/0x1180 mm/filemap.c:1356 wait_on_page_locked include/linux/pagemap.h:688 [inline] gfs2_jhead_process_page+0x25e/0xbf0 fs/gfs2/lops.c:476 gfs2_find_jhead+0xa5c/0x10c0 fs/gfs2/lops.c:586 gfs2_recover_func+0x6ce/0x1f00 fs/gfs2/recovery.c:462 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 INFO: task syz.1.48:4574 blocked for more than 144 seconds. Not tainted 5.15.175-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.48 state:D stack:23160 pid: 4574 ppid: 4169 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5027 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6373 schedule+0x11b/0x1f0 kernel/sched/core.c:6456 bit_wait+0xe/0xc0 kernel/sched/wait_bit.c:199 __wait_on_bit+0xb9/0x180 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0x1d0/0x250 kernel/sched/wait_bit.c:64 wait_on_bit include/linux/wait_bit.h:76 [inline] gfs2_recover_journal+0x110/0x160 fs/gfs2/recovery.c:579 init_journal+0x1804/0x23c0 fs/gfs2/ops_fstype.c:837 init_inodes+0xdc/0x310 fs/gfs2/ops_fstype.c:891 gfs2_fill_super+0x1c2c/0x2750 fs/gfs2/ops_fstype.c:1249 get_tree_bdev+0x3fe/0x620 fs/super.c:1325 gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1332 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x2ba/0xb40 fs/namespace.c:3012 do_mount fs/namespace.c:3355 [inline] __do_sys_mount fs/namespace.c:3563 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3540 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f40970184ca RSP: 002b:00007f4094e86e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f4094e86ef0 RCX: 00007f40970184ca RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007f4094e86eb0 RBP: 0000000020037f40 R08: 00007f4094e86ef0 R09: 000000000100c408 R10: 000000000100c408 R11: 0000000000000246 R12: 0000000020037f80 R13: 00007f4094e86eb0 R14: 0000000000037fa9 R15: 00000000200000c0 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8cb1fd20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 1 lock held by udevd/3548: #0: ffff88802100bd18 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x14d/0xa50 block/bdev.c:817 2 locks held by getty/3924: #0: ffff88802c6ec098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc900025c62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158 1 lock held by udevd/4160: #0: ffffffff8d011628 (uuid_mutex){+.+.}-{3:3}, at: btrfs_control_ioctl+0xbe/0x210 fs/btrfs/super.c:2454 2 locks held by kworker/1:16/4571: #0: ffff88801e61dd38 ((wq_completion)gfs_recovery){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283 #1: ffffc9000132fd20 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285 1 lock held by syz.1.48/4574: #0: ffff8880239740e0 (&type->s_umount_key#65/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229 2 locks held by syz-executor/4688: #0: ffff88802100a118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xfb/0x790 block/bdev.c:912 #1: ffff888147747468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa9/0xbe0 drivers/block/loop.c:1365 1 lock held by syz.0.374/6466: #0: ffff8880239740e0 (&type->s_umount_key#108){.+.+}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:716 1 lock held by syz.3.437/6855: 2 locks held by syz.6.438/6862: #0: ffff88802100bd18 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xfb/0x790 block/bdev.c:912 #1: ffff88814775a468 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_release+0x4d/0x1f0 drivers/block/loop.c:2070 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xe72/0xeb0 kernel/hung_task.c:295 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6855 Comm: syz.3.437 Not tainted 5.15.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__lock_acquire+0xad/0x1ff0 kernel/locking/lockdep.c:4886 Code: 48 c7 c0 c0 8f 4f 90 48 39 07 75 03 45 31 ff 89 5c 24 60 83 fd 01 77 33 89 e8 48 8d 5c c7 08 48 89 d8 48 c1 e8 03 80 3c 10 00 <74> 17 48 89 df e8 19 8d 67 00 48 8b 7c 24 08 48 ba 00 00 00 00 00 RSP: 0018:ffffc90000007b40 EFLAGS: 00000046 RAX: 1ffffffff1966482 RBX: ffffffff8cb32410 RCX: 0000000000000002 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff8cb32408 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffff88801e64bb80 R14: 0000000000000002 R15: 0000000000000001 FS: 00007fd685fea6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faa49d48000 CR3: 0000000049dd4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 seqcount_lockdep_reader_access+0xf8/0x220 include/linux/seqlock.h:103 timekeeping_get_delta kernel/time/timekeeping.c:254 [inline] timekeeping_get_ns kernel/time/timekeeping.c:388 [inline] ktime_get_update_offsets_now+0x89/0x420 kernel/time/timekeeping.c:2303 hrtimer_update_base kernel/time/hrtimer.c:631 [inline] hrtimer_interrupt+0x12f/0x980 kernel/time/hrtimer.c:1796 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline] __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:console_trylock_spinning+0x36b/0x3f0 kernel/printk/printk.c:1909 Code: 0f 84 75 ff ff ff e8 14 16 1a 00 fb 31 db eb 48 e8 0a 16 1a 00 e8 55 80 d8 08 4d 85 ed 74 cd e8 fb 15 1a 00 fb bb 01 00 00 00 <48> c7 c7 e0 c5 9f 8c 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 RSP: 0018:ffffc900031cf260 EFLAGS: 00000283 RAX: ffffffff81666ee5 RBX: 0000000000000001 RCX: 0000000000080000 RDX: ffffc9000c4c1000 RSI: 000000000007af06 RDI: 000000000007af07 RBP: ffffc900031cf330 R08: ffffffff81666e9e R09: fffffbfff2131246 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000639e4c R13: 0000000000000200 R14: 0000000000000046 R15: dffffc0000000000 vprintk_emit+0xa6/0x150 kernel/printk/printk.c:2273 _printk+0xd1/0x120 kernel/printk/printk.c:2299 btrfs_printk+0x4d2/0x510 fs/btrfs/super.c:245 __btrfs_clear_fs_compat_ro fs/btrfs/ctree.h:3737 [inline] btrfs_clear_free_space_tree+0x991/0xbd0 fs/btrfs/free-space-tree.c:1243 btrfs_start_pre_rw_mount+0x2b0/0x680 fs/btrfs/disk-io.c:3079 open_ctree+0x2dcf/0x3500 fs/btrfs/disk-io.c:3634 btrfs_fill_super+0x1c7/0x2d0 fs/btrfs/super.c:1387 btrfs_mount_root+0x803/0x930 fs/btrfs/super.c:1752 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 fc_mount fs/namespace.c:1000 [inline] vfs_kern_mount+0xb8/0x150 fs/namespace.c:1030 btrfs_mount+0x395/0xb40 fs/btrfs/super.c:1812 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x2ba/0xb40 fs/namespace.c:3012 do_mount fs/namespace.c:3355 [inline] __do_sys_mount fs/namespace.c:3563 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3540 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fd68817b4ca Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd685fe9e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fd685fe9ef0 RCX: 00007fd68817b4ca RDX: 00000000200055c0 RSI: 0000000020000380 RDI: 00007fd685fe9eb0 RBP: 00000000200055c0 R08: 00007fd685fe9ef0 R09: 0000000000000008 R10: 0000000000000008 R11: 0000000000000246 R12: 0000000020000380 R13: 00007fd685fe9eb0 R14: 00000000000055ae R15: 0000000020000300