INFO: task syz-executor:6531 blocked for more than 144 seconds. Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:6531 tgid:6531 ppid:1 task_flags:0x400140 flags:0x00000019 Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5397 [inline] __schedule+0x141c/0x2a14 kernel/sched/core.c:6786 __schedule_loop kernel/sched/core.c:6864 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6879 __bch2_fs_stop+0x5f8/0x800 fs/bcachefs/super.c:696 bch2_put_super+0x40/0x50 fs/bcachefs/fs.c:2365 generic_shutdown_super+0x12c/0x2b8 fs/super.c:643 bch2_kill_sb+0x40/0x58 fs/bcachefs/fs.c:2618 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1417 __cleanup_mnt+0x20/0x30 fs/namespace.c:1424 task_work_run+0x1dc/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x174/0x1f4 arch/arm64/kernel/entry-common.c:155 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:173 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:182 [inline] el0_svc+0xb8/0x180 arch/arm64/kernel/entry-common.c:880 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Showing all locks held in the system: 1 lock held by kthreadd/2: 1 lock held by kworker/0:0/9: 2 locks held by kworker/0:1/10: 3 locks held by kworker/u8:0/12: 3 locks held by kworker/u8:1/14: 3 locks held by kworker/1:0/24: 1 lock held by khungtaskd/32: #0: ffff80008f869980 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330 3 locks held by kworker/u8:2/41: 3 locks held by kworker/u8:3/42: 3 locks held by kworker/u8:4/160: 3 locks held by kworker/u8:5/293: 3 locks held by kworker/u8:6/352: 3 locks held by kworker/u8:7/544: 3 locks held by kworker/u8:8/616: 3 locks held by kworker/u8:9/683: 3 locks held by kworker/u8:10/695: 3 locks held by kworker/u8:11/731: 2 locks held by kworker/u8:12/790: 3 locks held by kworker/R-bat_e/4256: 2 locks held by klogd/6133: 2 locks held by udevd/6144: 2 locks held by getty/6293: #0: ffff0000d73180a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009ba4b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 1 lock held by syz-executor/6517: 1 lock held by syz-executor/6527: #0: ffff0000d01fc0e0 (&type->s_umount_key#30){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000d01fc0e0 (&type->s_umount_key#30){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000d01fc0e0 (&type->s_umount_key#30){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 1 lock held by syz-executor/6529: #0: ffff0000d2342308 (&xt[i].mutex){+.+.}-{4:4}, at: xt_find_table_lock+0x64/0x3c8 net/netfilter/x_tables.c:1243 1 lock held by syz-executor/6531: #0: ffff0000d843c0e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000d843c0e0 (&type->s_umount_key#79){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000d843c0e0 (&type->s_umount_key#79){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 2 locks held by kworker/1:3/6540: 2 locks held by kworker/1:7/6601: 2 locks held by syz-executor/8128: 3 locks held by kworker/u8:13/8473: 2 locks held by syz-executor/9743: 1 lock held by udevd/10076: 3 locks held by udevd/10079: 1 lock held by kmmpd-loop2/10223: #0: ffff0000d01fc428 (sb_writers#3){.+.+}-{0:0}, at: kmmpd+0x2ec/0x9b8 fs/ext4/mmp.c:178 3 locks held by rm/10230: 3 locks held by kworker/u8:14/10231: 1 lock held by kworker/u8:15/10232: =============================================