INFO: task syz-executor.2:5611 blocked for more than 143 seconds. Not tainted 6.4.0-rc1-syzkaller-00001-gba0ad6ed89fd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:27560 pid:5611 ppid:5357 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5343 [inline] __schedule+0x18c5/0x4910 kernel/sched/core.c:6669 schedule+0xbf/0x180 kernel/sched/core.c:6745 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6804 rwsem_down_write_slowpath+0xed1/0x1380 kernel/locking/rwsem.c:1178 __down_write_common+0x1a6/0x200 kernel/locking/rwsem.c:1306 filemap_invalidate_lock include/linux/fs.h:820 [inline] blkdev_fallocate+0x222/0x390 block/fops.c:649 vfs_fallocate+0x547/0x6b0 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+0xb9/0x100 fs/open.c:353 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: 0033:0x7f6d0428c0f9 RSP: 002b:00007f6d05069168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f6d043abf80 RCX: 00007f6d0428c0f9 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007f6d042e7b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0008000001002000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff476aa7ff R14: 00007f6d05069300 R15: 0000000000022000 INFO: task syz-executor.5:5621 blocked for more than 143 seconds. Not tainted 6.4.0-rc1-syzkaller-00001-gba0ad6ed89fd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:26968 pid:5621 ppid:5366 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5343 [inline] __schedule+0x18c5/0x4910 kernel/sched/core.c:6669 schedule+0xbf/0x180 kernel/sched/core.c:6745 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6804 rwsem_down_write_slowpath+0xed1/0x1380 kernel/locking/rwsem.c:1178 __down_write_common+0x1a6/0x200 kernel/locking/rwsem.c:1306 filemap_invalidate_lock include/linux/fs.h:820 [inline] blkdev_fallocate+0x222/0x390 block/fops.c:649 vfs_fallocate+0x547/0x6b0 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+0xb9/0x100 fs/open.c:353 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: 0033:0x7fd464c8c0f9 RSP: 002b:00007fd46590d168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007fd464dabf80 RCX: 00007fd464c8c0f9 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007fd464ce7b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0008000001002000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdb45b98af R14: 00007fd46590d300 R15: 0000000000022000 INFO: task syz-executor.0:5623 blocked for more than 144 seconds. Not tainted 6.4.0-rc1-syzkaller-00001-gba0ad6ed89fd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27560 pid:5623 ppid:5354 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5343 [inline] __schedule+0x18c5/0x4910 kernel/sched/core.c:6669 schedule+0xbf/0x180 kernel/sched/core.c:6745 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6804 rwsem_down_write_slowpath+0xed1/0x1380 kernel/locking/rwsem.c:1178 __down_write_common+0x1a6/0x200 kernel/locking/rwsem.c:1306 filemap_invalidate_lock include/linux/fs.h:820 [inline] blkdev_fallocate+0x222/0x390 block/fops.c:649 vfs_fallocate+0x547/0x6b0 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+0xb9/0x100 fs/open.c:353 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: 0033:0x7f4a7ec8c0f9 RSP: 002b:00007f4a7fa54168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f4a7edabf80 RCX: 00007f4a7ec8c0f9 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007f4a7ece7b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0008000001002000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc1e1c1caf R14: 00007f4a7fa54300 R15: 0000000000022000 INFO: task syz-executor.4:5630 blocked for more than 144 seconds. Not tainted 6.4.0-rc1-syzkaller-00001-gba0ad6ed89fd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27560 pid:5630 ppid:5368 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5343 [inline] __schedule+0x18c5/0x4910 kernel/sched/core.c:6669 schedule+0xbf/0x180 kernel/sched/core.c:6745 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6804 rwsem_down_write_slowpath+0xed1/0x1380 kernel/locking/rwsem.c:1178 __down_write_common+0x1a6/0x200 kernel/locking/rwsem.c:1306 filemap_invalidate_lock include/linux/fs.h:820 [inline] blkdev_fallocate+0x222/0x390 block/fops.c:649 vfs_fallocate+0x547/0x6b0 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+0xb9/0x100 fs/open.c:353 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: 0033:0x7f687b68c0f9 RSP: 002b:00007f687c3b5168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f687b7abf80 RCX: 00007f687b68c0f9 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000004 RBP: 00007f687b6e7b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0008000001002000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe14aed01f R14: 00007f687c3b5300 R15: 0000000000022000 Showing all locks held in the system: 3 locks held by kworker/u4:1/12: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8d125f70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518 1 lock held by rcu_tasks_trace/14: #0: ffffffff8d126330 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518 1 lock held by khungtaskd/28: #0: ffffffff8d125da0 ( rcu_read_lock ){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 3 locks held by kworker/u4:5/2814: 3 locks held by kworker/0:3/4407: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77a/0x10c0 kernel/workqueue.c:2378 #1: ffffc90005a3fd20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x7c0/0x10c0 kernel/workqueue.c:2380 #2: ffffffff8e29e248 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:277 2 locks held by getty/4744: #0: ffff888027b76098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2176 3 locks held by kworker/0:5/5005: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77a/0x10c0 kernel/workqueue.c:2378 #1: ffffc90003edfd20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x7c0/0x10c0 kernel/workqueue.c:2380 #2: ffff8880726a7240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2cd/0x4120 drivers/net/netdevsim/fib.c:1489 3 locks held by kworker/0:6/5006: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77a/0x10c0 kernel/workqueue.c:2378 #1: ffffc90003eefd20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x7c0/0x10c0 kernel/workqueue.c:2380 #2: ffff8880301be240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2cd/0x4120 drivers/net/netdevsim/fib.c:1489 1 lock held by syz-executor.1/5598: 1 lock held by syz-executor.2/5611: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 1 lock held by syz-executor.5/5621: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 1 lock held by syz-executor.0/5623: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 1 lock held by syz-executor.4/5630: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 1 lock held by syz-executor.1/5888: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 1 lock held by syz-executor.3/5890: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 1 lock held by syz-executor.2/5892: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 1 lock held by syz-executor.0/5901: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 1 lock held by syz-executor.4/5916: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 1 lock held by syz-executor.5/5918: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 2 locks held by kworker/u4:7/5919: 3 locks held by syz-executor.5/5967: #0: ffffffff8e29e248 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e29e248 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7ca/0xf40 net/core/rtnetlink.c:6392 #1: ffff88805de2d3e8 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x224/0x410 drivers/net/wireguard/device.c:49 #2: ffffffff8d12b478 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] #2: ffffffff8d12b478 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39f/0x880 kernel/rcu/tree_exp.h:992 1 lock held by syz-executor.1/5999: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 1 lock held by syz-executor.3/6005: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 1 lock held by syz-executor.2/6012: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 1 lock held by syz-executor.0/6017: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 1 lock held by syz-executor.4/6032: #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:820 [inline] #0: ffff8880168613b0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x222/0x390 block/fops.c:649 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc1-syzkaller-00001-gba0ad6ed89fd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x494/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x183/0x2d0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xeba/0xf00 kernel/hung_task.c:379 kthread+0x2aa/0x340 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.4.0-rc1-syzkaller-00001-gba0ad6ed89fd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Workqueue: wg-crypt-wg0 wg_packet_tx_worker RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:206 Code: 00 0f 0b 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d 78 02 eb 0c 48 89 de 5b e9 e7 55 59 00 cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0d 44 0a 79 7e 65 8b 15 45 0a 79 7e f7 c2 00 01 ff 00 74 RSP: 0018:ffffc90000a1f898 EFLAGS: 00000246 RAX: ffffffff8955de27 RBX: ffff88802fb33c98 RCX: ffff888017539dc0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88802fb33c80 RBP: 1ffff11005f66793 R08: ffffffff895535c8 R09: fffffbfff1ceb3ae R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88802fb33cd8 R14: ffff88814b0ae000 R15: ffff88802fb33c80 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555c2a848 CR3: 0000000029066000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip6_skb_dst_mtu+0x67/0x400 include/net/ip6_route.h:264 __ip6_finish_output net/ipv6/ip6_output.c:184 [inline] ip6_finish_output+0x184/0xa80 net/ipv6/ip6_output.c:206 ip6tunnel_xmit include/net/ip6_tunnel.h:161 [inline] udp_tunnel6_xmit_skb+0x583/0x9e0 net/ipv6/ip6_udp_tunnel.c:109 send6+0x6a1/0xa90 drivers/net/wireguard/socket.c:152 wg_socket_send_skb_to_peer+0x111/0x1d0 drivers/net/wireguard/socket.c:178 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline] wg_packet_tx_worker+0x1a1/0x7a0 drivers/net/wireguard/send.c:276 process_one_work+0x894/0x10c0 kernel/workqueue.c:2405 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2552 kthread+0x2aa/0x340 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308