INFO: task syz.1.183:7464 blocked for more than 143 seconds.
Not tainted 6.12.0-rc3-syzkaller-00403-gf9e4825524aa #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.183 state:D stack:25040 pid:7464 tgid:7458 ppid:6474 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1694
inode_lock_nested include/linux/fs.h:850 [inline]
filename_create+0x260/0x540 fs/namei.c:4026
do_mkdirat+0xbd/0x3a0 fs/namei.c:4272
__do_sys_mkdir fs/namei.c:4300 [inline]
__se_sys_mkdir fs/namei.c:4298 [inline]
__x64_sys_mkdir+0x6c/0x80 fs/namei.c:4298
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: 0033:0x7f81a8b7dff9
RSP: 002b:00007f81a85ff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f81a8d36058 RCX: 00007f81a8b7dff9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000300
RBP: 00007f81a8bf0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f81a8d36058 R15: 00007ffdcfdfea38
INFO: task syz.1.183:7492 blocked for more than 144 seconds.
Not tainted 6.12.0-rc3-syzkaller-00403-gf9e4825524aa #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.183 state:D stack:27424 pid:7492 tgid:7458 ppid:6474 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1694
inode_lock_nested include/linux/fs.h:850 [inline]
filename_create+0x260/0x540 fs/namei.c:4026
do_mkdirat+0xbd/0x3a0 fs/namei.c:4272
__do_sys_mkdirat fs/namei.c:4295 [inline]
__se_sys_mkdirat fs/namei.c:4293 [inline]
__x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4293
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: 0033:0x7f81a8b7dff9
RSP: 002b:00007f81a85de038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f81a8d36130 RCX: 00007f81a8b7dff9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: ffffffffffffff9c
RBP: 00007f81a8bf0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f81a8d36130 R15: 00007ffdcfdfea38
INFO: task syz.1.183:7495 blocked for more than 144 seconds.
Not tainted 6.12.0-rc3-syzkaller-00403-gf9e4825524aa #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.183 state:D stack:27424 pid:7495 tgid:7458 ppid:6474 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
inode_lock_shared include/linux/fs.h:825 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1748
walk_component+0x2e1/0x410 fs/namei.c:2053
lookup_last fs/namei.c:2556 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2580
filename_lookup+0x256/0x610 fs/namei.c:2609
user_path_at+0x3a/0x60 fs/namei.c:3016
do_mount fs/namespace.c:3844 [inline]
__do_sys_mount fs/namespace.c:4055 [inline]
__se_sys_mount+0x297/0x3c0 fs/namespace.c:4032
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: 0033:0x7f81a8b7dff9
RSP: 002b:00007f81a85bd038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f81a8d36208 RCX: 00007f81a8b7dff9
RDX: 0000000020000080 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 00007f81a8bf0296 R08: 0000000020000400 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f81a8d36208 R15: 00007ffdcfdfea38
INFO: task syz.1.183:7496 blocked for more than 145 seconds.
Not tainted 6.12.0-rc3-syzkaller-00403-gf9e4825524aa #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.183 state:D stack:27424 pid:7496 tgid:7458 ppid:6474 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1843/0x4ae0 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
inode_lock_shared include/linux/fs.h:825 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1748
walk_component+0x2e1/0x410 fs/namei.c:2053
lookup_last fs/namei.c:2556 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2580
filename_lookup+0x256/0x610 fs/namei.c:2609
user_path_at+0x3a/0x60 fs/namei.c:3016
do_mount fs/namespace.c:3844 [inline]
__do_sys_mount fs/namespace.c:4055 [inline]
__se_sys_mount+0x297/0x3c0 fs/namespace.c:4032
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: 0033:0x7f81a8b7dff9
RSP: 002b:00007f81a859c038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f81a8d362e0 RCX: 00007f81a8b7dff9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 00007f81a8bf0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000101008 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f81a8d362e0 R15: 00007ffdcfdfea38
Showing all locks held in the system:
5 locks held by kworker/u8:0/11:
#0: ffff88801baeb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801baeb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90000107d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90000107d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcb3e50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:580
#3: ffffffff8fcc0948 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xe9/0xaa0 net/core/dev.c:11934
#4: ffffffff8e93d3b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#4: ffffffff8e93d3b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:976
1 lock held by khungtaskd/30:
#0: ffffffff8e937e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937e20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937e20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720
4 locks held by kworker/u8:2/35:
#0: ffff8880b873ea58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:593
#1: ffffc90000ab7d00 ((work_completion)(&rdev->wiphy_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90000ab7d00 ((work_completion)(&rdev->wiphy_work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffff888069ae8768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:6014 [inline]
#2: ffff888069ae8768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: cfg80211_wiphy_work+0xd9/0x490 net/wireless/core.c:426
#3: ffffffff9a60ae40 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_assert_init+0x164/0x440 lib/debugobjects.c:897
2 locks held by kworker/u8:3/52:
3 locks held by kworker/u8:4/69:
#0: ffff88814a46d148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88814a46d148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc900020afd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc900020afd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcc0948 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4196
3 locks held by kworker/u8:7/2544:
3 locks held by kworker/u8:8/2567:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc900090f7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc900090f7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcc0948 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
1 lock held by dhcpcd/4891:
#0: ffffffff8fcc0948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcc0948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
2 locks held by getty/4976:
#0: ffff8880342da0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz.1.183/7459:
1 lock held by syz.1.183/7464:
#0: ffff88805e040180 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#0: ffff88805e040180 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:4026
1 lock held by syz.1.183/7492:
#0: ffff88805e040180 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline]
#0: ffff88805e040180 (&type->i_mutex_dir_key#20/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:4026
1 lock held by syz.1.183/7495:
#0: ffff88805e040180 (&type->i_mutex_dir_key#20){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:825 [inline]
#0: ffff88805e040180 (&type->i_mutex_dir_key#20){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1748
1 lock held by syz.1.183/7496:
#0: ffff88805e040180 (&type->i_mutex_dir_key#20){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:825 [inline]
#0: ffff88805e040180 (&type->i_mutex_dir_key#20){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1748
2 locks held by syz-executor/8491:
#0: ffff88806a8360e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88806a8360e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88806a8360e0 (&type->s_umount_key#53){++++}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffffffff8e93d280 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x4c/0x530 kernel/rcu/tree.c:4562
1 lock held by syz-executor/8694:
#0: ffffffff8fcc0948
(
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/8847:
#0: ffffffff8fcc0948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcc0948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc3-syzkaller-00403-gf9e4825524aa #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+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: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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 52 Comm: kworker/u8:3 Not tainted 6.12.0-rc3-syzkaller-00403-gf9e4825524aa #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_tt_purge
RIP: 0010:__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
RIP: 0010:_raw_spin_lock_bh+0x1c/0x50 kernel/locking/spinlock.c:178
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 56 53 49 89 fe 48 8b 5c 24 10 48 89 df be 01 02 00 00 e8 44 db 8f f5 <49> 8d 7e 18 31 f6 31 d2 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 0b
RSP: 0018:ffffc90000bc7a90 EFLAGS: 00000246
RAX: 75046243a88b2500 RBX: ffffffff8b8b1fc7 RCX: ffffffff8bc7e400
RDX: 0000000000000000 RSI: 0000000000000201 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff942938ff R09: 1ffffffff285271f
R10: dffffc0000000000 R11: fffffbfff2852720 R12: ffff8880264e4288
R13: 0000000000000000 R14: ffff8880728def80 R15: ffff8880264e4290
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdcde908178 CR3: 000000000e734000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
spin_lock_bh include/linux/spinlock.h:356 [inline]
batadv_tt_local_purge+0x107/0x340 net/batman-adv/translation-table.c:1354
batadv_tt_purge+0x35/0xa40 net/batman-adv/translation-table.c:3560
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
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