INFO: task syz.1.205:6749 blocked for more than 156 seconds.
Not tainted 6.13.0-syzkaller-04057-g15a901361ec3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.205 state:D stack:24128 pid:6749 tgid:6749 ppid:5832 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5373 [inline]
__schedule+0x186c/0x4be0 kernel/sched/core.c:6760
__schedule_loop kernel/sched/core.c:6837 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6852
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6909
__mutex_lock_common kernel/locking/mutex.c:662 [inline]
__mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
packet_flush_mclist net/packet/af_packet.c:3820 [inline]
packet_release+0x47e/0xcd0 net/packet/af_packet.c:3202
__sock_release net/socket.c:642 [inline]
sock_close+0xbc/0x240 net/socket.c:1393
__fput+0x23c/0xa50 fs/file_table.c:450
task_work_run+0x24f/0x310 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:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f817fb8cd29
RSP: 002b:00007fffc48bcab8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f817fda7ba0 RCX: 00007f817fb8cd29
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f817fda7ba0 R08: 0000000000000118 R09: 00007fffc48bcdaf
R10: 00007f817fda7ac0 R11: 0000000000000246 R12: 0000000000017ef8
R13: 00007f817fda6160 R14: 0000000000000032 R15: ffffffffffffffff
</TASK>
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e93a3e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e93a3e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e93a3e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
2 locks held by kworker/1:1/57:
#0: ffff8880b873e8d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
#1: ffff8880b8728948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x41d/0x7a0 kernel/sched/psi.c:987
3 locks held by kworker/1:2/974:
#0: ffff88801ac80d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88801ac80d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
#1: ffffc90003a4fc60 (reg_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc90003a4fc60 (reg_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
#2: ffffffff8fcc5a88 (rtnl_mutex){+.+.}-{4:4}, at: reg_todo+0x1c/0x8d0 net/wireless/reg.c:3216
4 locks held by kworker/u8:7/1129:
#0: ffff88801baf5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88801baf5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
#1: ffffc90003f2fc60 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc90003f2fc60 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
#2: ffffffff8fcb94d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x17a/0xd60 net/core/net_namespace.c:606
#3: ffffffff8fcc5a88 (rtnl_mutex){+.+.}-{4:4}, at: ieee80211_unregister_hw+0x55/0x2c0 net/mac80211/main.c:1674
2 locks held by klogd/5195:
5 locks held by udevd/5206:
2 locks held by getty/5600:
#0: ffff888031d140a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by syz-executor/5828:
#0: ffff8880789e4d80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close net/bluetooth/hci_core.c:480 [inline]
#0: ffff8880789e4d80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2677
#1: ffff8880789e4078 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x5c8/0x11c0 net/bluetooth/hci_sync.c:5185
2 locks held by syz-executor/5839:
3 locks held by kworker/0:3/5884:
#0: ffff88801ac80d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88801ac80d48 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
#1: ffffc9000432fc60 (free_ipc_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc9000432fc60 (free_ipc_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
#2: ffffffff8e93f8b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline]
#2: ffffffff8e93f8b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:996
3 locks held by kworker/0:6/5915:
3 locks held by kworker/1:6/5916:
#0: ffff88801ac81d48 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88801ac81d48 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
#1: ffffc9000439fc60 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc9000439fc60 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
#2: ffffffff8fcc5a88 (rtnl_mutex){+.+.}-{4:4}, at: reg_check_chans_work+0x99/0xfb0 net/wireless/reg.c:2480
8 locks held by syz-executor/6413:
#0: ffff888024528420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2980 [inline]
#0: ffff888024528420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x225/0xd30 fs/read_write.c:675
#1: ffff88802a732c88 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1ea/0x500 fs/kernfs/file.c:325
#2: ffff8880276851e8 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20e/0x500 fs/kernfs/file.c:326
#3: ffffffff8f570ec8 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
#4: ffff88807b52f0e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff88807b52f0e8 (&dev->mutex){....}-{4:4}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff88807b52f0e8 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1293
#5: ffff88805d6f0250 (&devlink->lock_key#3){+.+.}-{4:4}, at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1675
#6: ffffffff8fcc5a88 (rtnl_mutex){+.+.}-{4:4}, at: nsim_destroy+0xa4/0x620 drivers/net/netdevsim/netdev.c:1016
#7: ffffffff8e93f8b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline]
#7: ffffffff8e93f8b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:996
3 locks held by kworker/u8:15/6523:
#0: ffff88814d44e948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88814d44e948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
#1: ffffc90004ea7c60 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc90004ea7c60 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
#2: ffffffff8fcc5a88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:129 [inline]
#2: ffffffff8fcc5a88 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4730
3 locks held by kworker/u8:16/6524:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
#1: ffffc90004e77c60 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc90004e77c60 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
#2: ffffffff8fcc5a88 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:285
2 locks held by syz.3.200/6726:
#0: ffffffff8fcb94d0 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:512
#1: ffffffff8fcc5a88 (rtnl_mutex){+.+.}-{4:4}, at: mpls_net_exit+0x7d/0x2a0 net/mpls/af_mpls.c:2706
2 locks held by syz.1.205/6749:
#0: ffff888079fca008 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:832 [inline]
#0: ffff888079fca008 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: __sock_release net/socket.c:641 [inline]
#0: ffff888079fca008 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1393
#1: ffffffff8fcc5a88 (rtnl_mutex){+.+.}-{4:4}, at: packet_flush_mclist net/packet/af_packet.c:3820 [inline]
#1: ffffffff8fcc5a88 (rtnl_mutex){+.+.}-{4:4}, at: packet_release+0x47e/0xcd0 net/packet/af_packet.c:3202
3 locks held by rm/6793:
4 locks held by syz-executor/6800:
2 locks held by syz-executor/6802:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-syzkaller-04057-g15a901361ec3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0xff6/0x1040 kernel/hung_task.c:397
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6802 Comm: syz-executor Not tainted 6.13.0-syzkaller-04057-g15a901361ec3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4875 [inline]
RIP: 0010:__lock_acquire+0x99f/0x2100 kernel/locking/lockdep.c:5178
Code: 81 c3 c6 00 00 00 48 89 d8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 a5 00 00 00 80 3b 02 74 30 49 ff c6 48 8b 44 24 30 0f b6 04 10 <84> c0 75 6a 48 8b 04 24 48 63 00 49 83 c7 28 49 83 c5 28 41 ff c4
RSP: 0018:ffffc90003e7edf0 EFLAGS: 00000002
RAX: 0000000000000000 RBX: ffffffff93c80b98 RCX: ffffffff817af112
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff942f5870
RBP: 0000000000000000 R08: ffffffff942f5877 R09: 1ffffffff285eb0e
R10: dffffc0000000000 R11: fffffbfff285eb0f R12: 0000000000000001
R13: ffff8880309ca928 R14: 0000000000000002 R15: ffff8880309ca928
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f417977b338 CR3: 000000004e5ae000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<TASK>
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
put_cpu_partial+0x91/0x250 mm/slub.c:3204
__slab_free+0x290/0x380 mm/slub.c:4483
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4119 [inline]
slab_alloc_node mm/slub.c:4168 [inline]
kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4175
vm_area_alloc+0x24/0x1d0 kernel/fork.c:472
__mmap_new_vma mm/vma.c:2340 [inline]
__mmap_region+0x1961/0x2d30 mm/vma.c:2456
mmap_region+0x1d0/0x2c0 mm/mmap.c:1352
do_mmap+0x97a/0x10d0 mm/mmap.c:500
vm_mmap_pgoff+0x214/0x430 mm/util.c:575
elf_map fs/binfmt_elf.c:391 [inline]
elf_load+0x25a/0x700 fs/binfmt_elf.c:414
load_elf_binary+0x100c/0x2770 fs/binfmt_elf.c:1173
search_binary_handler fs/exec.c:1767 [inline]
exec_binprm fs/exec.c:1799 [inline]
bprm_execve+0x93f/0x13a0 fs/exec.c:1851
do_execveat_common+0x57f/0x710 fs/exec.c:1958
do_execve fs/exec.c:2032 [inline]
__do_sys_execve fs/exec.c:2108 [inline]
__se_sys_execve fs/exec.c:2103 [inline]
__x64_sys_execve+0x92/0xb0 fs/exec.c:2103
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa0503c03f7
Code: Unable to access opcode bytes at 0x7fa0503c03cd.
RSP: 002b:00007fa051247df8 EFLAGS: 00000206 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00007ffff60b3ef2 RCX: 00007fa0503c03f7
RDX: 00007ffff60b2600 RSI: 00007ffff60b2840 RDI: 00007ffff60b3ef2
RBP: 00007fa051247e70 R08: 00007fa051247f20 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000206 R12: 00007ffff60b2840
R13: 00007ffff60b2600 R14: 0000000000000000 R15: 0000000000000000
</TASK>