INFO: task syz.3.198:7539 blocked for more than 143 seconds.
Not tainted 6.11.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.198 state:D stack:27392 pid:7539 tgid:7531 ppid:7011 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
__fdget_pos+0x24e/0x310 fs/file.c:1187
fdget_pos include/linux/file.h:76 [inline]
__do_sys_getdents fs/readdir.c:320 [inline]
__se_sys_getdents+0x1c3/0x4d0 fs/readdir.c:309
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: 0033:0x7f2625d79e79
RSP: 002b:00007f2626b0c038 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007f2625f16208 RCX: 00007f2625d79e79
RDX: 00000000000000bb RSI: ffffffff81000000 RDI: 000000000000000b
RBP: 00007f2625de793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f2625f16208 R15: 00007ffdeb046fc8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
7 locks held by kworker/u8:3/52:
6 locks held by kworker/u8:4/63:
#0: ffff8880162e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff8880162e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc900015e7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc900015e7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa659d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
#3: ffff8880674030e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
#3: ffff8880674030e8 (&dev->mutex){....}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline]
#3: ffff8880674030e8 (&dev->mutex){....}-{3:3}, at: devlink_pernet_pre_exit+0x13b/0x440 net/devlink/core.c:506
#4: ffff888067404250 (&devlink->lock_key#37){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:276 [inline]
#4: ffff888067404250 (&devlink->lock_key#37){+.+.}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline]
#4: ffff888067404250 (&devlink->lock_key#37){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x14d/0x440 net/devlink/core.c:506
#5: ffffffff8fa72588 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x71/0x5c0 drivers/net/netdevsim/netdev.c:773
2 locks held by getty/4975:
#0: ffff88802b1590a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000341c2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by syz.3.198/7538:
1 lock held by syz.3.198/7539:
#0: ffff88802e4d4d48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x310 fs/file.c:1187
1 lock held by syz-executor/8318:
#0: ffff8880260de0e0 (&type->s_umount_key#82){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880260de0e0 (&type->s_umount_key#82){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880260de0e0 (&type->s_umount_key#82){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
2 locks held by syz.3.398/9070:
3 locks held by syz.0.399/9088:
#0: ffff88806da8cd80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:481 [inline]
#0: ffff88806da8cd80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2692
#1: ffff88806da8c078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x572/0x11a0 net/bluetooth/hci_sync.c:5145
#2: ffffffff8fbde068 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1977 [inline]
#2: ffffffff8fbde068 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa6/0x240 net/bluetooth/hci_conn.c:2592
3 locks held by syz.1.400/9094:
#0: ffff8880643bcd80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:481 [inline]
#0: ffff8880643bcd80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2692
#1: ffff8880643bc078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x572/0x11a0 net/bluetooth/hci_sync.c:5145
#2: ffffffff8fbde068 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1977 [inline]
#2: ffffffff8fbde068 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa6/0x240 net/bluetooth/hci_conn.c:2592
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/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: 2931 Comm: kworker/u8:8 Not tainted 6.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:839 [inline]
RIP: 0010:batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
RIP: 0010:batadv_nc_worker+0x101/0x610 net/batman-adv/network-coding.c:719
Code: 02 00 00 00 45 31 c0 45 31 c9 48 89 44 24 10 50 e8 24 35 f7 f5 48 83 c4 08 e8 5b b9 35 00 41 89 c6 31 ff 89 c6 e8 af f9 1a f6 <45> 85 f6 74 13 e8 b5 2b 01 f6 84 c0 49 89 de 74 11 e8 59 f5 1a f6
RSP: 0018:ffffc9000928fb58 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff888020d1f840 RCX: ffff88802bdada00
RDX: ffff88802bdada00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff88805f68ce10 R08: ffffffff8b789811 R09: 1ffffffff269ef08
R10: dffffc0000000000 R11: fffffbfff269ef09 R12: ffff888061c08cc0
R13: 00000000000001c2 R14: 0000000000000001 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555c20c54058 CR3: 000000000e534000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244