INFO: task syz-executor.1:8466 blocked for more than 143 seconds. Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:0 pid:8466 tgid:8465 ppid:8350 flags:0x00000005 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5400 [inline] __schedule+0x1498/0x24b4 kernel/sched/core.c:6727 __schedule_loop kernel/sched/core.c:6802 [inline] schedule+0xb8/0x19c kernel/sched/core.c:6817 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6874 rwsem_down_write_slowpath+0xcfc/0x1aa0 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0xb4/0xc0 kernel/locking/rwsem.c:1580 filemap_invalidate_lock include/linux/fs.h:849 [inline] blk_ioctl_zeroout block/ioctl.c:185 [inline] blkdev_common_ioctl+0x19dc/0x2878 block/ioctl.c:514 blkdev_ioctl+0x35c/0xae4 block/ioctl.c:628 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:857 __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/29: #0: ffff80008ee74ac0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:297 2 locks held by kworker/u4:8/532: 2 locks held by getty/5929: #0: ffff0000d79090a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800094f722f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201 2 locks held by kworker/0:4/6236: #0: ffff0000c0022538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2606 #1: ffff800097f87c20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2608 1 lock held by syz-executor.2/8186: 1 lock held by syz-executor.1/8466: #0: ffff0000c14b2058 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:849 [inline] #0: ffff0000c14b2058 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:185 [inline] #0: ffff0000c14b2058 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x19dc/0x2878 block/ioctl.c:514 1 lock held by syz-executor.4/8669: #0: ffff0000c14b2058 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:849 [inline] #0: ffff0000c14b2058 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:185 [inline] #0: ffff0000c14b2058 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x19dc/0x2878 block/ioctl.c:514 1 lock held by syz-executor.0/9365: #0: ffff0000c14b2058 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:849 [inline] #0: ffff0000c14b2058 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:185 [inline] #0: ffff0000c14b2058 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x19dc/0x2878 block/ioctl.c:514 1 lock held by syz-executor.1/9548: #0: ffff0000c14b2058 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:849 [inline] #0: ffff0000c14b2058 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:185 [inline] #0: ffff0000c14b2058 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x19dc/0x2878 block/ioctl.c:514 2 locks held by syz-executor.1/9742: #0: ffff80009194f2e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff80009194f2e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x704/0xdbc net/core/rtnetlink.c:6614 #1: ffff80008ee7a3f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline] #1: ffff80008ee7a3f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3ac/0x728 kernel/rcu/tree_exp.h:995 2 locks held by syz-executor.2/9747: 3 locks held by syz-executor.4/9753: 1 lock held by udevadm/9761: 5 locks held by syz-executor.0/9780: =============================================