INFO: task syz.4.923:13683 blocked for more than 143 seconds.
Not tainted 6.11.0-rc7-syzkaller-00039-g77f587896757 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.923 state:D stack:26840 pid:13683 tgid:13680 ppid:13219 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
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1696
inode_lock_nested include/linux/fs.h:835 [inline]
lock_rename fs/namei.c:3147 [inline]
do_renameat2+0x62c/0x13f0 fs/namei.c:5058
__do_sys_rename fs/namei.c:5170 [inline]
__se_sys_rename fs/namei.c:5168 [inline]
__x64_sys_rename+0x82/0x90 fs/namei.c:5168
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: 0033:0x7fca7657def9
RSP: 002b:00007fca77429038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fca76736058 RCX: 00007fca7657def9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000020000580
RBP: 00007fca765f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fca76736058 R15: 00007ffd4f1c8bc8
INFO: task syz.4.923:13684 blocked for more than 144 seconds.
Not tainted 6.11.0-rc7-syzkaller-00039-g77f587896757 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.923 state:D stack:25008 pid:13684 tgid:13680 ppid:13219 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
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1696
inode_lock_nested include/linux/fs.h:835 [inline]
do_unlinkat+0x26a/0x830 fs/namei.c:4473
__do_sys_unlink fs/namei.c:4534 [inline]
__se_sys_unlink fs/namei.c:4532 [inline]
__x64_sys_unlink+0x47/0x50 fs/namei.c:4532
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: 0033:0x7fca7657def9
RSP: 002b:00007fca77408038 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007fca76736130 RCX: 00007fca7657def9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 00007fca765f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fca76736130 R15: 00007ffd4f1c8bc8
INFO: task syz.4.923:13698 blocked for more than 144 seconds.
Not tainted 6.11.0-rc7-syzkaller-00039-g77f587896757 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.923 state:D stack:26616 pid:13698 tgid:13680 ppid:13219 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
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:800 [inline]
open_last_lookups fs/namei.c:3644 [inline]
path_openat+0x7fb/0x3470 fs/namei.c:3883
do_filp_open+0x235/0x490 fs/namei.c:3913
do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_open fs/open.c:1439 [inline]
__se_sys_open fs/open.c:1435 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1435
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: 0033:0x7fca7657def9
RSP: 002b:00007fca773e7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fca76736208 RCX: 00007fca7657def9
RDX: 0000000000000000 RSI: 0000000000101042 RDI: 0000000020001280
RBP: 00007fca765f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fca76736208 R15: 00007ffd4f1c8bc8
INFO: task syz.4.923:13700 blocked for more than 145 seconds.
Not tainted 6.11.0-rc7-syzkaller-00039-g77f587896757 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.923 state:D stack:26840 pid:13700 tgid:13680 ppid:13219 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
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1696
inode_lock_nested include/linux/fs.h:835 [inline]
lock_rename fs/namei.c:3147 [inline]
do_renameat2+0x62c/0x13f0 fs/namei.c:5058
__do_sys_renameat2 fs/namei.c:5157 [inline]
__se_sys_renameat2 fs/namei.c:5154 [inline]
__x64_sys_renameat2+0xce/0xe0 fs/namei.c:5154
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: 0033:0x7fca7657def9
RSP: 002b:00007fca773c6038 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007fca767362e0 RCX: 00007fca7657def9
RDX: 0000000000000005 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007fca765f0b76 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000020000100 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fca767362e0 R15: 00007ffd4f1c8bc8
INFO: task syz.4.923:13702 blocked for more than 145 seconds.
Not tainted 6.11.0-rc7-syzkaller-00039-g77f587896757 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.923 state:D stack:27064 pid:13702 tgid:13680 ppid:13219 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
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:810 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1734
walk_component fs/namei.c:2039 [inline]
link_path_walk+0x99b/0xea0 fs/namei.c:2404
path_parentat fs/namei.c:2613 [inline]
__filename_parentat+0x263/0x6f0 fs/namei.c:2637
filename_parentat fs/namei.c:2655 [inline]
filename_create+0xf6/0x540 fs/namei.c:3960
do_mknodat+0x18b/0x5b0 fs/namei.c:4125
__do_sys_mknodat fs/namei.c:4166 [inline]
__se_sys_mknodat fs/namei.c:4163 [inline]
__x64_sys_mknodat+0xa7/0xc0 fs/namei.c:4163
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: 0033:0x7fca7657def9
RSP: 002b:00007fca773a5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000103
RAX: ffffffffffffffda RBX: 00007fca767363b8 RCX: 00007fca7657def9
RDX: 0000000000000800 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 00007fca765f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fca767363b8 R15: 00007ffd4f1c8bc8
INFO: task syz.0.903:13766 blocked for more than 146 seconds.
Not tainted 6.11.0-rc7-syzkaller-00039-g77f587896757 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.903 state:D stack:26840 pid:13766 tgid:13735 ppid:13359 flags:0x00000004
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
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1696
vfs_rename+0x6a2/0xf00 fs/namei.c:4937
do_renameat2+0xd94/0x13f0 fs/namei.c:5123
__do_sys_rename fs/namei.c:5170 [inline]
__se_sys_rename fs/namei.c:5168 [inline]
__x64_sys_rename+0x82/0x90 fs/namei.c:5168
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: 0033:0x7f980557def9
RSP: 002b:00007f98062d0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f98057362e0 RCX: 00007f980557def9
RDX: 0000000000000000 RSI: 0000000020000f40 RDI: 00000000200003c0
RBP: 00007f98055f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f98057362e0 R15: 00007ffdb7ccccc8
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
3 locks held by kworker/u8:3/52:
#0: ffff88801a889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88801a889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90000bc7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90000bc7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
2 locks held by kworker/u8:5/999:
5 locks held by kworker/u8:7/3010:
#0: ffff88801b6e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88801b6e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90009e07d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90009e07d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa6d250 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
#3: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xe9/0xa90 net/core/dev.c:11883
#4: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline]
#4: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:958
4 locks held by kworker/u8:8/3385:
#0: ffff888020ac1948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff888020ac1948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc9000aa77d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc9000aa77d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff8880258a20e0 (&type->s_umount_key#90){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562
#3: ffff88805c6cd2a0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2175 [inline]
#3: ffff88805c6cd2a0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x5b0/0x7a0 fs/f2fs/segment.c:440
1 lock held by dhcpcd/4888:
#0: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2ce/0x1bc0 net/ipv4/devinet.c:1101
2 locks held by getty/4978:
#0: ffff8880349ea0a0 (&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+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by syz.4.923/13681:
2 locks held by syz.4.923/13683:
#0: ffff88807c094420 (sb_writers#4){++++}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88801231c9c0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:835 [inline]
#1: ffff88801231c9c0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3147 [inline]
#1: ffff88801231c9c0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_renameat2+0x62c/0x13f0 fs/namei.c:5058
2 locks held by syz.4.923/13684:
#0: ffff88807c094420 (sb_writers#4){++++}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88801231c9c0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:835 [inline]
#1: ffff88801231c9c0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x26a/0x830 fs/namei.c:4473
2 locks held by syz.4.923/13698:
#0: ffff88807c094420 (sb_writers#4){++++}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88801231c9c0 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline]
#1: ffff88801231c9c0 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3644 [inline]
#1: ffff88801231c9c0 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: path_openat+0x7fb/0x3470 fs/namei.c:3883
2 locks held by syz.4.923/13700:
#0: ffff88807c094420 (sb_writers#4){++++}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88801231c9c0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:835 [inline]
#1: ffff88801231c9c0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3147 [inline]
#1: ffff88801231c9c0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_renameat2+0x62c/0x13f0 fs/namei.c:5058
1 lock held by syz.4.923/13702:
#0: ffff88801231c9c0 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:810 [inline]
#0: ffff88801231c9c0 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1734
5 locks held by syz.0.903/13758:
3 locks held by syz.0.903/13766:
#0: ffff8880258a2420 (sb_writers#26){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88807ecf8a10 (&type->i_mutex_dir_key#18/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:835 [inline]
#1: ffff88807ecf8a10 (&type->i_mutex_dir_key#18/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3147 [inline]
#1: ffff88807ecf8a10 (&type->i_mutex_dir_key#18/1){+.+.}-{3:3}, at: do_renameat2+0x62c/0x13f0 fs/namei.c:5058
#2: ffff88805d1dad30 (&sb->s_type->i_mutex_key#31/4){+.+.}-{3:3}, at: vfs_rename+0x6a2/0xf00 fs/namei.c:4937
1 lock held by syz-executor/13834:
#0: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3510
2 locks held by syz.2.945/13900:
#0: ffff8880258a20e0 (&type->s_umount_key#90){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880258a20e0 (&type->s_umount_key#90){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff888025b9c7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
#1: ffff888025b9c7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb20 fs/fs-writeback.c:2790
1 lock held by syz-executor/14855:
#0: ffffffff8fa79e08 (rtnl_mutex){+.+.}-{3:3}, at: __tun_chr_ioctl+0x48f/0x2400 drivers/net/tun.c:3120
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller-00039-g77f587896757 #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: 999 Comm: kworker/u8:5 Not tainted 6.11.0-rc7-syzkaller-00039-g77f587896757 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:115 [inline]
RIP: 0010:lock_release+0xe0/0xa30 kernel/locking/lockdep.c:5772
Code: 87 0e 73 16 e8 f1 ce 09 00 84 c0 75 0d 80 3d d1 28 71 0e 00 0f 84 fc 05 00 00 48 c7 c0 fc 7b f7 8f 48 c1 e8 03 42 0f b6 04 38 <84> c0 0f 85 1f 06 00 00 83 3d 2d 88 87 0e 00 4c 8b 74 24 18 0f 84
RSP: 0018:ffffc90004237a20 EFLAGS: 00000a03
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff816ff390
RDX: 0000000000000000 RSI: ffffffff8c3fbae0 RDI: ffffffff8c3fbaa0
RBP: ffffc90004237b48 R08: ffffffff8ff749af R09: 1ffffffff1fee935
R10: dffffc0000000000 R11: fffffbfff1fee936 R12: 1ffff92000846f50
R13: ffffffff8b7b3b0b R14: ffff88802480ff00 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe900307ab8 CR3: 000000002deee000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:336 [inline]
rcu_read_unlock include/linux/rcupdate.h:869 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x28b/0x610 net/batman-adv/network-coding.c:719
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