INFO: task syz-executor.5:14326 blocked for more than 143 seconds.
Not tainted 6.9.0-rc7-syzkaller-00183-gcf87f46fd34d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27736 pid:14326 tgid:14319 ppid:5118 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:795 [inline]
chmod_common+0x1bb/0x4c0 fs/open.c:644
vfs_fchmod fs/open.c:666 [inline]
__do_sys_fchmod fs/open.c:675 [inline]
__se_sys_fchmod fs/open.c:669 [inline]
__x64_sys_fchmod+0xf8/0x160 fs/open.c:669
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc122c7dd69
RSP: 002b:00007fc1239b30c8 EFLAGS: 00000246 ORIG_RAX: 000000000000005b
RAX: ffffffffffffffda RBX: 00007fc122dac120 RCX: 00007fc122c7dd69
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fc122cca49e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc122dac120 R15: 00007ffcd76390e8
Showing all locks held in the system:
3 locks held by kworker/0:1/8:
#0: ffff888015078948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3242 [inline]
#0: ffff888015078948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3348
#1: ffffc900000d7d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3243 [inline]
#1: ffffc900000d7d00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3348
#2: ffff88807d484240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2d1/0x4130 drivers/net/netdevsim/fib.c:1489
1 lock held by khungtaskd/29:
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
1 lock held by kswapd0/89:
2 locks held by getty/4839:
#0: ffff88802aed50a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by kworker/1:5/5165:
#0: ffff888015078948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3242 [inline]
#0: ffff888015078948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3348
#1: ffffc90002d3fd00 (free_ipc_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3243 [inline]
#1: ffffc90002d3fd00 (free_ipc_work){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3348
3 locks held by syz-executor.1/14104:
#0: ffff8880721d1060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:552 [inline]
#0: ffff8880721d1060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x1d3/0x4e0 net/bluetooth/hci_core.c:2771
#1: ffff8880721d0078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x48b/0x1050 net/bluetooth/hci_sync.c:5146
#2: ffffffff8f70fbe8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:2025 [inline]
#2: ffffffff8f70fbe8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa6/0x240 net/bluetooth/hci_conn.c:2568
3 locks held by syz-executor.5/14323:
2 locks held by syz-executor.5/14326:
#0: ffff88801ec3a420 (sb_writers#20){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88804e161260 (&type->i_mutex_dir_key#15){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#1: ffff88804e161260 (&type->i_mutex_dir_key#15){++++}-{3:3}, at: chmod_common+0x1bb/0x4c0 fs/open.c:644
3 locks held by kworker/1:3/14365:
#0: ffff888015078948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3242 [inline]
#0: ffff888015078948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3348
#1: ffffc90015427d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3243 [inline]
#1: ffffc90015427d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3348
#2: ffffffff8f5a6808 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
6 locks held by kworker/u8:14/16047:
#0: ffff888015ecd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3242 [inline]
#0: ffff888015ecd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3348
#1: ffffc9000346fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3243 [inline]
#1: ffffc9000346fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3348
#2: ffffffff8f59a110 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
#3: ffff8880691d10e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#3: ffff8880691d10e8 (&dev->mutex){....}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline]
#3: ffff8880691d10e8 (&dev->mutex){....}-{3:3}, at: devlink_pernet_pre_exit+0x13b/0x440 net/devlink/core.c:506
#4: ffff8880691d2250 (&devlink->lock_key#14){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:276 [inline]
#4: ffff8880691d2250 (&devlink->lock_key#14){+.+.}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline]
#4: ffff8880691d2250 (&devlink->lock_key#14){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x14d/0x440 net/devlink/core.c:506
#5: ffffffff8f5a6808 (rtnl_mutex){+.+.}-{3:3}, at: fib_seq_sum+0x31/0x2a0 net/core/fib_notifier.c:46
3 locks held by kworker/u8:15/16048:
#0: ffff88802a0dd948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3242 [inline]
#0: ffff88802a0dd948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3348
#1: ffffc900036afd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3243 [inline]
#1: ffffc900036afd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3348
#2: ffffffff8f5a6808 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4192
1 lock held by syz-executor.4/16321:
#0: ffffffff8f5a6808 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2ce/0x1bc0 net/ipv4/devinet.c:1096
2 locks held by syz-executor.3/16519:
#0: ffffffff8f5a6808 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f5a6808 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
#1: ffffffff8e33a138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#1: ffffffff8e33a138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x463/0x820 kernel/rcu/tree_exp.h:939
3 locks held by syz-executor.5/16602:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc7-syzkaller-00183-gcf87f46fd34d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:380
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/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 PID: 16085 Comm: kworker/u8:44 Not tainted 6.9.0-rc7-syzkaller-00183-gcf87f46fd34d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:228 [inline]
RIP: 0010:unwind_next_frame+0x45f/0x2a00 arch/x86/kernel/unwind_orc.c:494
Code: d2 02 00 00 4d 8d 6c 9f fc 4d 39 fd 0f 83 cc 13 00 00 e8 c4 c4 54 00 4c 89 f9 4d 89 fc e9 55 14 00 00 4a 8d 1c bd 24 05 b6 8f <45> 29 fc 4e 8d 64 a3 fc 49 39 dc 73 4d e8 9f c4 54 00 48 29 db e9
RSP: 0018:ffffc900042474e8 EFLAGS: 00000212
RAX: 0000000000000000 RBX: ffffffff901a6958 RCX: ffffffff90bcba58
RDX: ffff88807e5bbc00 RSI: 000000000019190d RDI: 0000000000191922
RBP: 000000000009cbcc R08: ffffffff8141424e R09: ffffc900042476b0
R10: 0000000000000003 R11: ffffffff8181e7c0 R12: 0000000000191922
R13: 00000000000ac001 R14: dffffc0000000000 R15: 000000000019190d
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd02fa4ef8 CR3: 000000000e134000 CR4: 0000000000350ef0
Call Trace:
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xa6/0xe0 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2111 [inline]
slab_free mm/slub.c:4286 [inline]
kmem_cache_free+0x10b/0x2d0 mm/slub.c:4350
skb_kfree_head net/core/skbuff.c:1094 [inline]
skb_free_head net/core/skbuff.c:1108 [inline]
skb_release_data+0x556/0x870 net/core/skbuff.c:1136
skb_release_all net/core/skbuff.c:1202 [inline]
__kfree_skb net/core/skbuff.c:1216 [inline]
kfree_skb_reason+0x1a5/0x3b0 net/core/skbuff.c:1252
kfree_skb include/linux/skbuff.h:1262 [inline]
ieee80211_iface_work+0x270/0xf10 net/mac80211/iface.c:1661
cfg80211_wiphy_work+0x223/0x260 net/wireless/core.c:437
process_one_work kernel/workqueue.c:3267 [inline]
process_scheduled_works+0xa12/0x17c0 kernel/workqueue.c:3348
worker_thread+0x86d/0xd70 kernel/workqueue.c:3429
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244