INFO: task syz-executor.4:7593 blocked for more than 143 seconds. Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:0 pid:7593 ppid:5996 flags:0x00000001 Call trace: __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5304 [inline] __schedule+0x1130/0x1fd0 kernel/sched/core.c:6622 schedule+0xc4/0x170 kernel/sched/core.c:6698 io_schedule+0x8c/0x120 kernel/sched/core.c:8884 __lock_metapage+0x1cc/0x458 fs/jfs/jfs_metapage.c:50 lock_metapage fs/jfs/jfs_metapage.c:64 [inline] __get_metapage+0x96c/0x1050 fs/jfs/jfs_metapage.c:639 diIAGRead fs/jfs/jfs_imap.c:2662 [inline] diNewExt+0x1b98/0x2b44 fs/jfs/jfs_imap.c:2230 diAllocExt fs/jfs/jfs_imap.c:1945 [inline] diAllocAG+0xa68/0x1b8c fs/jfs/jfs_imap.c:1662 diAlloc+0x360/0x1530 fs/jfs/jfs_imap.c:1583 ialloc+0x84/0x7c0 fs/jfs/jfs_inode.c:56 jfs_mkdir+0x190/0xa0c fs/jfs/namei.c:225 vfs_mkdir+0x240/0x3a8 fs/namei.c:4038 do_mkdirat+0x20c/0x610 fs/namei.c:4061 __do_sys_mkdirat fs/namei.c:4076 [inline] __se_sys_mkdirat fs/namei.c:4074 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4074 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffff800015eb7c90 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 1 lock held by rcu_tasks_trace/13: #0: ffff800015eb8490 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510 1 lock held by khungtaskd/28: #0: ffff800015eb7ac0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:326 2 locks held by getty/5625: #0: ffff0000d8748098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80001aa102f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177 2 locks held by syz-fuzzer/6155: 1 lock held by syz-executor.0/5981: #0: ffff00012cdc40e0 (&type->s_umount_key#54){+.+.}-{3:3}, at: deactivate_super+0xe8/0x110 fs/super.c:361 5 locks held by syz-executor.1/5987: #0: ffff0001b44de818 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:539 [inline] #0: ffff0001b44de818 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1366 [inline] #0: ffff0001b44de818 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1653 [inline] #0: ffff0001b44de818 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2cc/0x1fd0 kernel/sched/core.c:6539 #1: ffff0000d1bf5da0 (&mm->cid_lock#2){....}-{2:2}, at: mm_cid_get+0x17c/0x384 kernel/sched/sched.h:3280 #2: ffff800015eb7ac0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:326 #3: ffff0000c0031018 (&pool->lock/1){-.-.}-{2:2}, at: __queue_work+0x808/0x1604 #4: ffff00012df08908 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xb0/0xf84 kernel/sched/core.c:4159 2 locks held by kworker/u4:6/6079: 4 locks held by syz-executor.4/7593: #0: ffff00012e972460 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:394 #1: ffff0000dfa2b3c0 (&type->i_mutex_dir_key#14/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #1: ffff0000dfa2b3c0 (&type->i_mutex_dir_key#14/1){+.+.}-{3:3}, at: filename_create+0x200/0x464 fs/namei.c:3808 #2: ffff000132dd8920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diAlloc+0x168/0x1530 fs/jfs/jfs_imap.c:1343 #3: ffff0000dfa2a638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diAllocExt fs/jfs/jfs_imap.c:1910 [inline] #3: ffff0000dfa2a638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diAllocAG+0x25c/0x1b8c fs/jfs/jfs_imap.c:1662 4 locks held by syz-executor.2/7697: #0: ffff00013b5ea460 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:394 #1: ffff0000cdbeb3c0 (&type->i_mutex_dir_key#14/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #1: ffff0000cdbeb3c0 (&type->i_mutex_dir_key#14/1){+.+.}-{3:3}, at: filename_create+0x200/0x464 fs/namei.c:3808 #2: ffff00013b738920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diAlloc+0x168/0x1530 fs/jfs/jfs_imap.c:1343 #3: ffff0000cdbea638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diAllocExt fs/jfs/jfs_imap.c:1910 [inline] #3: ffff0000cdbea638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diAllocAG+0x25c/0x1b8c fs/jfs/jfs_imap.c:1662 2 locks held by syz-executor.1/8606: 3 locks held by syz-executor.5/8616: =============================================