INFO: task syz-executor.2:6256 blocked for more than 143 seconds. Not tainted 6.9.0-rc4-syzkaller-g6a71d2909427 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:0 pid:6256 tgid:6256 ppid:1 flags:0x0000000d Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5409 [inline] __schedule+0x14bc/0x24ec kernel/sched/core.c:6746 __schedule_loop kernel/sched/core.c:6823 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6838 bit_wait+0x1c/0xac kernel/sched/wait_bit.c:199 __wait_on_bit kernel/sched/wait_bit.c:49 [inline] out_of_line_wait_on_bit+0x208/0x334 kernel/sched/wait_bit.c:64 wait_on_bit include/linux/wait_bit.h:76 [inline] gfs2_glock_wait+0xb8/0x298 fs/gfs2/glock.c:1354 gfs2_glock_nq+0xcc8/0x169c fs/gfs2/glock.c:1616 gfs2_glock_nq_init fs/gfs2/glock.h:238 [inline] __gfs2_lookup+0x124/0x270 fs/gfs2/inode.c:905 gfs2_lookup+0x2c/0x3c fs/gfs2/inode.c:930 __lookup_slow+0x250/0x374 fs/namei.c:1692 lookup_slow+0x60/0x84 fs/namei.c:1709 walk_component+0x280/0x36c fs/namei.c:2004 lookup_last fs/namei.c:2461 [inline] path_lookupat+0x13c/0x3d0 fs/namei.c:2485 filename_lookup+0x1d4/0x4e0 fs/namei.c:2514 user_path_at_empty+0x5c/0x84 fs/namei.c:2921 user_path_at include/linux/namei.h:57 [inline] ksys_umount fs/namespace.c:1916 [inline] __do_sys_umount fs/namespace.c:1924 [inline] __se_sys_umount fs/namespace.c:1922 [inline] __arm64_sys_umount+0xf8/0x17c fs/namespace.c:1922 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffff80008f0578c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328 1 lock held by klogd/5847: 2 locks held by getty/6013: #0: ffff0000d725a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800097b6e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201 1 lock held by syz-executor.2/6256: #0: ffff0000f2e80808 (&type->i_mutex_dir_key#10){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline] #0: ffff0000f2e80808 (&type->i_mutex_dir_key#10){.+.+}-{3:3}, at: lookup_slow+0x50/0x84 fs/namei.c:1708 =============================================