INFO: task syz-executor.2:5557 blocked for more than 143 seconds. Not tainted 6.5.0-rc7-syzkaller-00004-gf7757129e3de #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28416 pid:5557 ppid:5384 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845 rwsem_down_write_slowpath+0x53e/0x1290 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d3/0x200 kernel/locking/rwsem.c:1574 filemap_invalidate_lock include/linux/fs.h:816 [inline] blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 vfs_fallocate+0x46c/0xe80 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0xd5/0x140 fs/open.c:353 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f1ed7a7cae9 RSP: 002b:00007f1ed88bd0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f1ed7b9bf80 RCX: 00007f1ed7a7cae9 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007f1ed7ac847a R08: 0000000000000000 R09: 0000000000000000 R10: 7fffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f1ed7b9bf80 R15: 00007ffd24ea2aa8 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8c9a67f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522 1 lock held by rcu_tasks_trace/14: #0: ffffffff8c9a64f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522 1 lock held by khungtaskd/28: #0: ffffffff8c9a7400 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615 2 locks held by kworker/u4:3/52: 3 locks held by kworker/0:2/918: #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:678 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:705 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2570 #1: ffffc90004ed7d80 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2574 #2: ffff88805c9bd240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1bb/0x26e0 drivers/net/netdevsim/fib.c:1489 2 locks held by getty/4777: #0: ffff88814aa81098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187 3 locks held by kworker/0:5/5478: #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:678 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:705 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2570 #1: ffffc900054afd80 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2574 #2: ffff888057e62240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1bb/0x26e0 drivers/net/netdevsim/fib.c:1489 1 lock held by syz-executor.3/5521: 1 lock held by syz-executor.2/5557: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.0/5586: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.1/5591: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.5/5606: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.4/5609: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.3/5901: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.2/5908: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.1/5925: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.0/5940: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.5/5943: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.4/5945: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.3/5962: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.2/5983: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.1/6032: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.0/6034: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.5/6056: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.4/6058: #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881488d14c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc7-syzkaller-00004-gf7757129e3de #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x2ac/0x310 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xf29/0x11b0 kernel/hung_task.c:379 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 52 Comm: kworker/u4:3 Not tainted 6.5.0-rc7-syzkaller-00004-gf7757129e3de #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Workqueue: bat_events batadv_nc_worker RIP: 0010:__lock_acquire+0x265/0x5de0 kernel/locking/lockdep.c:5077 Code: 0a 40 80 fe 03 0f 8e c4 3e 00 00 0f b7 71 20 81 e6 ff 1f 00 00 39 de 75 0c 48 83 7c 24 20 00 0f 85 7e 0d 00 00 48 8b 44 24 08 <89> da 66 81 e2 ff 1f 49 01 c5 49 8d 45 20 48 89 c1 48 89 44 24 30 RSP: 0018:ffffc90000bd7958 EFLAGS: 00000006 RAX: ffff88801767e408 RBX: 0000000000000020 RCX: ffff88801767e430 RDX: 0000000000000000 RSI: 00000000000006b6 RDI: ffff88801767e450 RBP: 0000000000000000 R08: 1ffff11002ecfc8a R09: 0000000000000001 R10: ffffffff8c9a7400 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000050 R14: 0000000000000000 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32e20000 CR3: 000000004a321000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 rcu_lock_acquire include/linux/rcupdate.h:303 [inline] rcu_read_lock include/linux/rcupdate.h:749 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline] batadv_nc_worker+0x175/0x10f0 net/batman-adv/network-coding.c:719 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600 worker_thread+0x687/0x1110 kernel/workqueue.c:2751 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304