INFO: task syz-executor.5:4735 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack: 0 pid: 4735 ppid: 4347 flags:0x00000005 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+0xe8/0x12c kernel/locking/rwsem.c:1552 filemap_invalidate_lock include/linux/fs.h:832 [inline] blkdev_fallocate+0x208/0x424 block/fops.c:603 vfs_fallocate+0x4a4/0x5f4 fs/open.c:308 ksys_fallocate fs/open.c:331 [inline] __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __arm64_sys_fallocate+0xc0/0x110 fs/open.c:337 __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 INFO: task syz-executor.4:4737 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack: 0 pid: 4737 ppid: 4341 flags:0x00000005 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+0xe8/0x12c kernel/locking/rwsem.c:1552 filemap_invalidate_lock include/linux/fs.h:832 [inline] blkdev_fallocate+0x208/0x424 block/fops.c:603 vfs_fallocate+0x4a4/0x5f4 fs/open.c:308 ksys_fallocate fs/open.c:331 [inline] __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __arm64_sys_fallocate+0xc0/0x110 fs/open.c:337 __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 INFO: task syz-executor.2:4743 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack: 0 pid: 4743 ppid: 4329 flags:0x00000005 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+0xe8/0x12c kernel/locking/rwsem.c:1552 filemap_invalidate_lock include/linux/fs.h:832 [inline] blkdev_fallocate+0x208/0x424 block/fops.c:603 vfs_fallocate+0x4a4/0x5f4 fs/open.c:308 ksys_fallocate fs/open.c:331 [inline] __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __arm64_sys_fallocate+0xc0/0x110 fs/open.c:337 __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: ffff800014341360 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311 1 lock held by klogd/3650: 2 locks held by getty/3805: #0: ffff0000d5233098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001bc4e2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2f0/0xf6c drivers/tty/n_tty.c:2158 2 locks held by syz-executor.3/4730: 1 lock held by syz-executor.5/4735: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.4/4737: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.2/4743: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.0/4873: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.1/4935: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.3/4963: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.2/4974: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.5/4993: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.4/4995: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.0/5024: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.1/5065: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.3/5102: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.2/5121: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.4/5143: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 1 lock held by syz-executor.5/5145: #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #0: ffff0000c53e0990 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x208/0x424 block/fops.c:603 =============================================