INFO: task syz-executor.3:5605 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.3 state:D stack:28416 pid:5605 ppid:5383 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: 0033:0x7fc49267c919 RSP: 002b:00007fc4933df0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007fc49279bf80 RCX: 00007fc49267c919 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 RBP: 00007fc4926d8c94 R08: 0000000000000000 R09: 0000000000000000 R10: 0000010000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fc49279bf80 R15: 00007ffc2e5c23d8 INFO: task syz-executor.4:5608 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.4 state:D stack:28416 pid:5608 ppid:5392 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: 0033:0x7f0ae1a7c919 RSP: 002b:00007f0ae28b80c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f0ae1b9bf80 RCX: 00007f0ae1a7c919 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 RBP: 00007f0ae1ad8c94 R08: 0000000000000000 R09: 0000000000000000 R10: 0000010000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f0ae1b9bf80 R15: 00007ffe3e0837c8 INFO: task syz-executor.2:5611 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:28272 pid:5611 ppid:5393 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: 0033:0x7f20d527c919 RSP: 002b:00007f20d5f780c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f20d539bf80 RCX: 00007f20d527c919 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000003 RBP: 00007f20d52d8c94 R08: 0000000000000000 R09: 0000000000000000 R10: 0000010000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f20d539bf80 R15: 00007ffeefacb6c8 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/27: #0: ffffffff8c9a7400 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615 2 locks held by getty/4774: #0: ffff88814b053098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187 1 lock held by syz-executor.5/5601: 1 lock held by syz-executor.3/5605: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.4/5608: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.2/5611: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.0/5891: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.1/5917: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.3/5947: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.4/5949: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.2/5951: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.5/5953: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.0/5970: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.1/5985: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.3/6027: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.2/6050: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.4/6055: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.5/6057: #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff8881489742c8 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 2 locks held by udevd/6064: #0: ffff8880b993c3d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:558 #1: ffff8880b9928848 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2d9/0x900 kernel/sched/psi.c:999 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1073 Comm: kworker/u4:5 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:check_kcov_mode kernel/kcov.c:173 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xb/0x70 kernel/kcov.c:207 Code: 0f 1e fa 48 8b be b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 8b 05 dd b0 7d 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 80 b9 03 00 a9 RSP: 0018:ffffc9000592fbb0 EFLAGS: 00000246 RAX: 0000000080000000 RBX: ffff88807a6b4ee0 RCX: 0000000000000000 RDX: ffff888020da9dc0 RSI: ffffffff89fc5435 RDI: 0000000000000001 RBP: 00000000000001dc R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888016f96480 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056420f715c08 CR3: 000000001e916000 CR4: 0000000000350ee0 Call Trace: rcu_read_unlock include/linux/rcupdate.h:778 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline] batadv_nc_worker+0x8c2/0x10f0 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