INFO: task syz-executor.2:14224 blocked for more than 143 seconds. Not tainted 6.1.0-rc7-syzkaller-00101-g01f856ae6d0c #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:23032 pid:14224 ppid:3666 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5209 [inline] __schedule+0x8c9/0xd70 kernel/sched/core.c:6521 schedule+0xcb/0x190 kernel/sched/core.c:6597 rwsem_down_write_slowpath+0xfc1/0x1480 kernel/locking/rwsem.c:1190 __down_write_common kernel/locking/rwsem.c:1305 [inline] __down_write kernel/locking/rwsem.c:1314 [inline] down_write+0x231/0x270 kernel/locking/rwsem.c:1563 filemap_invalidate_lock include/linux/fs.h:801 [inline] blkdev_fallocate+0x21f/0x390 block/fops.c:641 vfs_fallocate+0x515/0x670 fs/open.c:323 ksys_fallocate fs/open.c:346 [inline] __do_sys_fallocate fs/open.c:354 [inline] __se_sys_fallocate fs/open.c:352 [inline] __x64_sys_fallocate+0xb9/0x100 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7f88a8c0d9 RSP: 002b:00007f7f8971c168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f7f88bac050 RCX: 00007f7f88a8c0d9 RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000005 RBP: 00007f7f88ae7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000001002000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd6f488f9f R14: 00007f7f8971c300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8d1272b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffffffff8d127ab0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/28: #0: ffffffff8d1270e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 3 locks held by kworker/1:1H/52: 2 locks held by kworker/u4:5/1143: 2 locks held by getty/3308: #0: ffff88814b297098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177 2 locks held by syz-fuzzer/3628: 1 lock held by syz-executor.4/14205: 1 lock held by syz-executor.2/14224: #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 1 lock held by syz-executor.4/14319: #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 1 lock held by syz-executor.4/14323: #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 1 lock held by syz-executor.3/14362: #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 1 lock held by syz-executor.3/14363: #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 1 lock held by syz-executor.3/14364: #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 1 lock held by syz-executor.4/14401: #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 1 lock held by syz-executor.4/14402: #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline] #0: ffff888140c988c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x21f/0x390 block/fops.c:641 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc7-syzkaller-00101-g01f856ae6d0c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xcf5/0xd40 kernel/hung_task.c:377 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3737 Comm: kworker/u4:7 Not tainted 6.1.0-rc7-syzkaller-00101-g01f856ae6d0c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: bat_events batadv_nc_worker RIP: 0010:check_preemption_disabled+0x19/0x110 lib/smp_processor_id.c:14 Code: cc 48 c7 c7 40 3a 4b 8b 48 c7 c6 80 3a 4b 8b eb 00 41 57 41 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 <65> 8b 1d 68 ce 6f 75 65 8b 05 11 24 70 75 a9 ff ff ff 7f 74 22 65 RSP: 0000:ffffc9000485fb80 EFLAGS: 00000282 RAX: f5bba45d8412b500 RBX: ffff8881457a7240 RCX: ffff888026c7a788 RDX: dffffc0000000000 RSI: ffffffff8b4b3a80 RDI: ffffffff8b4b3a40 RBP: ffff888017e64c80 R08: dffffc0000000000 R09: fffffbfff20b2e29 R10: fffffbfff20b2e29 R11: 1ffffffff20b2e28 R12: dffffc0000000000 R13: ffff888074e9c000 R14: ffff8881457a7250 R15: 00000000000002ec FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c016f8f000 CR3: 000000001d83f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:121 [inline] rcu_is_watching+0x11/0xb0 kernel/rcu/tree.c:719 rcu_read_lock include/linux/rcupdate.h:739 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline] batadv_nc_worker+0xcd/0x5b0 net/batman-adv/network-coding.c:719 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306