INFO: task syz-executor.1:5579 blocked for more than 143 seconds. Not tainted 6.5.0-rc7-syzkaller-gf7757129e3de #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:28416 pid:5579 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: 0033:0x7f61a727c959 RSP: 002b:00007f61a804f0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f61a739bf80 RCX: 00007f61a727c959 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007f61a72d8c88 R08: 0000000000000000 R09: 0000000000000000 R10: 0008000001002000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f61a739bf80 R15: 00007ffd43c00cc8 INFO: task syz-executor.4:5580 blocked for more than 143 seconds. Not tainted 6.5.0-rc7-syzkaller-gf7757129e3de #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:28416 pid:5580 ppid:5388 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: 0033:0x7fe43c07c959 RSP: 002b:00007fe43cd940c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007fe43c19bf80 RCX: 00007fe43c07c959 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007fe43c0d8c88 R08: 0000000000000000 R09: 0000000000000000 R10: 0008000001002000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fe43c19bf80 R15: 00007ffd415f3578 INFO: task syz-executor.0:5588 blocked for more than 143 seconds. Not tainted 6.5.0-rc7-syzkaller-gf7757129e3de #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:28416 pid:5588 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: 0033:0x7f30b467c959 RSP: 002b:00007f30b540d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f30b479bf80 RCX: 00007f30b467c959 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007f30b46d8c88 R08: 0000000000000000 R09: 0000000000000000 R10: 0008000001002000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f30b479bf80 R15: 00007ffe90381f88 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 getty/4773: #0: ffff888028fdc098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900015c02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187 1 lock held by syz-executor.5/5564: 1 lock held by syz-executor.1/5579: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.4/5580: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.0/5588: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.2/5913: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.3/5915: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.4/5945: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.0/5947: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.1/5949: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.5/5951: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.2/5980: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.3/6004: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.0/6049: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.1/6051: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.4/6053: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e6/0x3e0 block/fops.c:660 1 lock held by syz-executor.5/6055: #0: ffff88801ad0e548 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:816 [inline] #0: ffff88801ad0e548 (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-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-gf7757129e3de #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Workqueue: bat_events batadv_tt_purge RIP: 0010:__this_cpu_preempt_check+0x0/0x20 lib/smp_processor_id.c:65 Code: ff ff ff 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 c7 c6 80 11 c8 8a 48 c7 c7 c0 11 c8 8a e9 09 ff ff ff 66 0f 1f 84 00 00 00 00 00 0f 1e fa 48 89 fe 48 c7 c7 00 12 c8 8a e9 ed fe ff ff 66 2e 0f RSP: 0018:ffffc90000007bd8 EFLAGS: 00000046 RAX: 0000000000000007 RBX: ffffffff8eabd8b0 RCX: ffffffff81670ab5 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8a6c8360 RBP: 1ffff92000000f7e R08: 0000000000000000 R09: fffffbfff1d57472 R10: ffffffff8eaba397 R11: 000000000000004e R12: ffffc90000007ce0 R13: 1ffff92000000f96 R14: ffff888017295940 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055fd7af74040 CR3: 000000000c776000 CR4: 0000000000350ef0 Call Trace: lockdep_recursion_inc kernel/locking/lockdep.c:462 [inline] lock_release+0x15b/0x680 kernel/locking/lockdep.c:5780 call_timer_fn+0x221/0x580 kernel/time/timer.c:1703 expire_timers kernel/time/timer.c:1746 [inline] __run_timers+0x585/0xb10 kernel/time/timer.c:2022 run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035 __do_softirq+0x218/0x965 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:__local_bh_enable_ip+0xac/0x120 kernel/softirq.c:388 Code: 1d d1 17 b5 7e 65 8b 05 ca 17 b5 7e a9 00 ff ff 00 74 45 bf 01 00 00 00 e8 e1 89 0a 00 e8 8c 11 3e 00 fb 65 8b 05 ac 17 b5 7e <85> c0 74 4a 5b 5d c3 65 8b 05 b2 e4 b3 7e 85 c0 75 a2 0f 0b eb 9e RSP: 0018:ffffc90000bd7af0 EFLAGS: 00000206 RAX: 0000000080000000 RBX: 00000000fffffe00 RCX: 1ffffffff2317888 RDX: 0000000000000000 RSI: ffffffff8a6c80a0 RDI: ffffffff8ac81200 RBP: ffffffff89ff0bac R08: 0000000000000001 R09: fffffbfff2309df1 R10: ffffffff9184ef8f R11: 0000000000000000 R12: 0000000000000109 R13: ffff888086244200 R14: ffff88802d193680 R15: dffffc0000000000 spin_unlock_bh include/linux/spinlock.h:396 [inline] batadv_tt_local_purge+0x21c/0x3c0 net/batman-adv/translation-table.c:1357 batadv_tt_purge+0x8b/0xbb0 net/batman-adv/translation-table.c:3561 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