INFO: task syz-executor:8131 blocked for more than 143 seconds. Not tainted 6.16.0-rc4-syzkaller-g25b50375179c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:0 pid:8131 tgid:8131 ppid:1 task_flags:0x400140 flags:0x00000011 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 lmLogClose+0xb0/0x4c4 fs/jfs/jfs_logmgr.c:1444 jfs_umount+0x26c/0x350 fs/jfs/jfs_umount.c:114 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x12c/0x2b8 fs/super.c:643 kill_block_super+0x44/0x90 fs/super.c:1755 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:600 INFO: task syz.5.714:9361 blocked for more than 143 seconds. Not tainted 6.16.0-rc4-syzkaller-g25b50375179c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.714 state:D stack:0 pid:9361 tgid:9359 ppid:6929 task_flags:0x400140 flags:0x00000011 Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T) context_switch kernel/sched/core.c:5396 [inline] __schedule+0x1414/0x2a28 kernel/sched/core.c:6785 __schedule_loop kernel/sched/core.c:6863 [inline] schedule+0xb4/0x230 kernel/sched/core.c:6878 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6935 __mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 open_dummy_log fs/jfs/jfs_logmgr.c:1191 [inline] lmLogOpen+0x184/0xd5c fs/jfs/jfs_logmgr.c:1066 jfs_mount_rw+0xe4/0x548 fs/jfs/jfs_mount.c:257 jfs_fill_super+0x5d4/0xb80 fs/jfs/super.c:532 get_tree_bdev_flags+0x360/0x414 fs/super.c:1681 get_tree_bdev+0x2c/0x3c fs/super.c:1704 jfs_get_tree+0x28/0x38 fs/jfs/super.c:635 vfs_get_tree+0x90/0x28c fs/super.c:1804 do_new_mount+0x228/0x814 fs/namespace.c:3902 path_mount+0x5b4/0xde0 fs/namespace.c:4226 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount fs/namespace.c:4427 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4427 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 3 locks held by kworker/u8:0/12: 3 locks held by kworker/u8:1/14: 1 lock held by khungtaskd/32: #0: ffff80008f839a00 (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: 2 locks held by pr/ttyAMA0/43: 4 locks held by kworker/u9:0/52: 3 locks held by kworker/u8:4/317: 3 locks held by kworker/u8:5/320: 3 locks held by kworker/u8:6/338: 3 locks held by kworker/u8:7/2036: 3 locks held by kworker/u8:8/2098: 3 locks held by kworker/u8:9/2179: 2 locks held by kworker/0:2/2314: 2 locks held by kworker/R-bat_e/4243: 3 locks held by kworker/u8:10/4466: 1 lock held by klogd/6118: 2 locks held by udevd/6129: 2 locks held by getty/6282: #0: ffff0000d27360a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009ba0b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222 1 lock held by syz-executor/6503: 2 locks held by syz-executor/6516: #0: ffff0000cff180e0 (&type->s_umount_key#58){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000cff180e0 (&type->s_umount_key#58){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000cff180e0 (&type->s_umount_key#58){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 #1: ffff80008fc680a8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb0/0x4c4 fs/jfs/jfs_logmgr.c:1444 4 locks held by syz-executor/6523: 2 locks held by syz-executor/8131: #0: ffff0001025a80e0 (&type->s_umount_key#58){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0001025a80e0 (&type->s_umount_key#58){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0001025a80e0 (&type->s_umount_key#58){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 #1: ffff80008fc680a8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb0/0x4c4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/8258: #0: ffff0000c7bda0e0 (&type->s_umount_key#58){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline] #0: ffff0000c7bda0e0 (&type->s_umount_key#58){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline] #0: ffff0000c7bda0e0 (&type->s_umount_key#58){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:506 #1: ffff80008fc680a8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb0/0x4c4 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz.5.714/9361: #0: ffff0000c5fa00e0 (&type->s_umount_key#56/1){+.+.}-{4:4}, at: alloc_super+0x1a0/0x80c fs/super.c:345 #1: ffff80008fc680a8 (jfs_log_mutex){+.+.}-{4:4}, at: open_dummy_log fs/jfs/jfs_logmgr.c:1191 [inline] #1: ffff80008fc680a8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogOpen+0x184/0xd5c fs/jfs/jfs_logmgr.c:1066 4 locks held by syz-executor/9711: 2 locks held by syz-executor/10087: 1 lock held by udevd/10089: #0: ffff0000c14a1eb0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:884 [inline] #0: ffff0000c14a1eb0 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: blkdev_read_iter+0x2a0/0x3dc block/fops.c:832 3 locks held by udevd/10090: 3 locks held by syz.7.898/10251: 3 locks held by dhcpcd-run-hook/10277: 2 locks held by udevd/10290: 3 locks held by kworker/u8:11/10296: 3 locks held by kworker/u8:12/10299: 1 lock held by kworker/u8:13/10300: =============================================