INFO: task syz.0.106:4570 blocked for more than 143 seconds. Not tainted 5.15.185-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.106 state:D stack: 0 pid: 4570 ppid: 4029 flags:0x00000001 Call trace: __switch_to+0x2f4/0x558 arch/arm64/kernel/process.c:521 context_switch kernel/sched/core.c:5030 [inline] __schedule+0xe00/0x1c0c kernel/sched/core.c:6376 schedule+0x11c/0x1c8 kernel/sched/core.c:6459 rwsem_down_write_slowpath+0xcb8/0x13f4 kernel/locking/rwsem.c:1165 __down_write_common kernel/locking/rwsem.c:1292 [inline] __down_write kernel/locking/rwsem.c:1301 [inline] down_write_nested+0xec/0x130 kernel/locking/rwsem.c:1668 xfs_ilock+0x194/0x474 fs/xfs/xfs_inode.c:184 xfs_file_buffered_write+0x11c/0x99c fs/xfs/xfs_file.c:743 xfs_file_write_iter+0x2b0/0x5fc fs/xfs/xfs_file.c:833 call_write_iter include/linux/fs.h:2172 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x7c8/0xa2c fs/read_write.c:594 ksys_write+0x120/0x210 fs/read_write.c:647 __do_sys_write fs/read_write.c:659 [inline] __se_sys_write fs/read_write.c:656 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:656 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffff8000143311e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311 2 locks held by kworker/u4:3/153: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283 #1: ffff80001beb7c00 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285 2 locks held by getty/3798: #0: ffff0000d37b5098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001b7902e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2f0/0xf6c drivers/tty/n_tty.c:2158 2 locks held by kworker/u4:6/4123: #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283 #1: ffff80001f667c00 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285 3 locks held by kworker/u4:9/4225: 5 locks held by syz.0.106/4567: #0: ffff0000d1d28460 (sb_writers#15){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3042 [inline] #0: ffff0000d1d28460 (sb_writers#15){.+.+}-{0:0}, at: vfs_fallocate+0x434/0x5f4 fs/open.c:307 #1: ffff0000e970dd00 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: xfs_ilock+0x194/0x474 fs/xfs/xfs_inode.c:184 #2: ffff0000e970dea0 (mapping.invalidate_lock#3){++++}-{3:3}, at: xfs_ilock+0x1fc/0x474 fs/xfs/xfs_inode.c:192 #3: ffff0000d1d28650 (sb_internal#3){.+.+}-{0:0}, at: xfs_bmapi_convert_delalloc+0x1bc/0xca0 fs/xfs/libxfs/xfs_bmap.c:4573 #4: ffff0000e970dae8 (&xfs_nondir_ilock_class){++++}-{3:3}, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline] #4: ffff0000e970dae8 (&xfs_nondir_ilock_class){++++}-{3:3}, at: xfs_ilock+0x264/0x474 fs/xfs/xfs_inode.c:200 3 locks held by syz.0.106/4570: #0: ffff0000cd391270 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x118/0x170 fs/file.c:1058 #1: ffff0000d1d28460 (sb_writers#15){.+.+}-{0:0}, at: vfs_write+0x228/0xa2c fs/read_write.c:590 #2: ffff0000e970dd00 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: xfs_ilock+0x194/0x474 fs/xfs/xfs_inode.c:184 1 lock held by syz-executor/4725: #0: ffff800014335ca8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #0: ffff800014335ca8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2f0/0x5e0 kernel/rcu/tree_exp.h:845 4 locks held by kworker/u4:12/4730: #0: ffff0000d07cd938 ((wq_completion)xfs_iwalk-6729){+.+.}-{0:0}, at: process_one_work+0x678/0x1140 kernel/workqueue.c:2283 #1: ffff80001f8e7c00 ((work_completion)(&pwork->work)){+.+.}-{0:0}, at: process_one_work+0x6b8/0x1140 kernel/workqueue.c:2285 #2: ffff0000d8f90650 (sb_internal#3){.+.+}-{0:0}, at: xfs_qm_dqread_alloc fs/xfs/xfs_dquot.c:642 [inline] #2: ffff0000d8f90650 (sb_internal#3){.+.+}-{0:0}, at: xfs_qm_dqread+0x19c/0x6f0 fs/xfs/xfs_dquot.c:692 #3: ffff0000deebade8 (&xfs_nondir_ilock_class){++++}-{3:3}, at: mrupdate_nested fs/xfs/mrlock.h:36 [inline] #3: ffff0000deebade8 (&xfs_nondir_ilock_class){++++}-{3:3}, at: xfs_ilock+0x264/0x474 fs/xfs/xfs_inode.c:200 2 locks held by kworker/u4:17/5320: 2 locks held by kworker/0:15/5739: 1 lock held by syz.4.561/6729: #0: ffff0000d8f900e0 (&type->s_umount_key#54/1){+.+.}-{3:3}, at: alloc_super+0x1a8/0x824 fs/super.c:229 5 locks held by syz.2.564/6768: 1 lock held by syz.6.567/6782: #0: ffff0000d673c618 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #0: ffff0000d673c618 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x138/0x284 mm/util.c:549 2 locks held by syz.6.567/6784: 1 lock held by syz.3.568/6785: #0: ffff0000f402b210 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #0: ffff0000f402b210 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:648 [inline] #0: ffff0000f402b210 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x7c/0x1f8 net/socket.c:1336 =============================================