INFO: task syz.9.1643:14457 blocked for more than 144 seconds.
Not tainted 6.12.0-rc4-syzkaller-00161-gae90f6a6170d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.1643 state:D stack:25824 pid:14457 tgid:14457 ppid:9090 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0xe55/0x5730 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6782
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2591
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
__vhost_worker_flush+0x1aa/0x1e0 drivers/vhost/vhost.c:288
vhost_worker_flush drivers/vhost/vhost.c:295 [inline]
vhost_dev_flush+0xad/0x120 drivers/vhost/vhost.c:305
vhost_vsock_flush drivers/vhost/vsock.c:697 [inline]
vhost_vsock_dev_release+0x19f/0x400 drivers/vhost/vsock.c:749
__fput+0x3f6/0xb60 fs/file_table.c:431
task_work_run+0x14e/0x250 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc94317e719
RSP: 002b:00007ffcd870ccf8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fc943337a80 RCX: 00007fc94317e719
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fc943337a80 R08: 0000000000000006 R09: 00007ffcd870cfef
R10: 00000000003ffd1c R11: 0000000000000246 R12: 00000000000eed33
R13: 00007ffcd870ce00 R14: 0000000000000032 R15: ffffffffffffffff
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e1b8380 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1b8380 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1b8380 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
3 locks held by kworker/u8:2/35:
#0: ffff88801b089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90000ab7d80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffffffff8fee2928 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0x51/0xc0 net/core/link_watch.c:276
2 locks held by getty/5586:
#0: ffff888035bba0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
6 locks held by kworker/u8:9/6235:
#0: ffff88801beeb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000bbffd80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffffffff8feccf90 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xb40 net/core/net_namespace.c:580
#3: ffff8880347570e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff8880347570e8 (&dev->mutex){....}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline]
#3: ffff8880347570e8 (&dev->mutex){....}-{3:3}, at: devlink_pernet_pre_exit+0x12d/0x2b0 net/devlink/core.c:506
#4: ffff888024c0e250 (&devlink->lock_key#26){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:276 [inline]
#4: ffff888024c0e250 (&devlink->lock_key#26){+.+.}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline]
#4: ffff888024c0e250 (&devlink->lock_key#26){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x137/0x2b0 net/devlink/core.c:506
#5: ffffffff8fee2928 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x6f/0x6b0 drivers/net/netdevsim/netdev.c:773
3 locks held by kworker/1:7/8189:
#0: ffff88801b080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90003cdfd80 (xfrm_state_gc_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffffffff8e1c3c78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329
1 lock held by syz-executor/15599:
#0: ffffffff8fee2928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fee2928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/15628:
#0: ffffffff8fee2928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fee2928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6672
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc4-syzkaller-00161-gae90f6a6170d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf0c/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 15764 Comm: rm Not tainted 6.12.0-rc4-syzkaller-00161-gae90f6a6170d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__unwind_start+0x2f2/0x7f0 arch/x86/kernel/unwind_orc.c:713
Code: 3c 03 0f 8e 01 03 00 00 41 c7 06 00 00 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 65 48 8b 05 3e 6a c6 7e <48> 39 c5 0f 84 72 02 00 00 48 8d bd 98 18 00 00 48 b8 00 00 00 00
RSP: 0018:ffffc90002e5eed0 EFLAGS: 00000246
RAX: ffff888031d3da00 RBX: ffffc90002e5efb0 RCX: 0000000000000000
RDX: 1ffff920005cbde9 RSI: 0000000000000000 RDI: ffffc90002e5ef80
RBP: ffff888031d3da00 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90002e5ef20 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc90002e5efe0 R14: ffffc90002e5ef20 R15: ffffc90002e5ef48
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff4ea131ba8 CR3: 0000000057f46000 CR4: 00000000003526f0
Call Trace:
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x74/0x100 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
__kasan_record_aux_stack+0xba/0xd0 mm/kasan/generic.c:541
__call_rcu_common.constprop.0+0x99/0x7a0 kernel/rcu/tree.c:3086
mas_free lib/maple_tree.c:1303 [inline]
mas_replace_node lib/maple_tree.c:1740 [inline]
mas_wr_node_store+0xdb8/0x1600 lib/maple_tree.c:3857
mas_wr_store_entry+0xe2f/0x30e0 lib/maple_tree.c:4078
mas_store_prealloc+0x77e/0x1690 lib/maple_tree.c:5520
vma_complete+0x89e/0xda0 mm/vma.c:226
__split_vma+0xcd8/0x1160 mm/vma.c:430
vms_gather_munmap_vmas+0x38f/0x1750 mm/vma.c:1226
mmap_region+0x379/0x2a50 mm/mmap.c:1387
do_mmap+0xc00/0xfc0 mm/mmap.c:496
vm_mmap_pgoff+0x1ba/0x360 mm/util.c:588
ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:542
__do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline]
__se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline]
__x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:79
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff4ea3deb74
Code: 63 08 44 89 e8 5b 41 5c 41 5d c3 41 89 ca 41 f7 c1 ff 0f 00 00 74 0c c7 05 f5 46 01 00 16 00 00 00 eb 17 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 dc 46 01 00 48 83 c8 ff c3 0f
RSP: 002b:00007ffd179b3c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffd179b3cc0 RCX: 00007ff4ea3deb74
RDX: 0000000000000001 RSI: 0000000000025000 RDI: 00007ff4ea0e9000
RBP: 00007ffd179b3fe0 R08: 0000000000000003 R09: 000000000002e000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007ff4ea3bc570
R13: 00007ffd179b4068 R14: 000000000002d9c6 R15: 0000000000000000