rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6328/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=18049, q=499 ncpus=2)
task:syz-executor.1 state:R running task stack:23576 pid:6328 tgid:6327 ppid:5137 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5249 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6594
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6916
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5820
Code: 2b 00 74 08 4c 89 f7 e8 6a 82 8a 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc9000326ed80 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200064ddbc RCX: d79239a3a6816e00
RDX: dffffc0000000000 RSI: ffffffff8bcada20 RDI: ffffffff8c206c80
RBP: ffffc9000326eee0 R08: ffffffff92fe4747 R09: 1ffffffff25fc8e8
R10: dffffc0000000000 R11: fffffbfff25fc8e9 R12: 1ffff9200064ddb8
R13: dffffc0000000000 R14: ffffc9000326ede0 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:333 [inline]
rcu_read_lock include/linux/rcupdate.h:845 [inline]
percpu_ref_get_many+0x36/0x140 include/linux/percpu-refcount.h:202
percpu_ref_get include/linux/percpu-refcount.h:222 [inline]
css_get include/linux/cgroup_refcnt.h:11 [inline]
mem_cgroup_commit_charge+0x9f/0x380 mm/memcontrol.c:3134
charge_memcg+0xb1/0x160 mm/memcontrol.c:7534
__mem_cgroup_charge+0x27/0x80 mm/memcontrol.c:7545
mem_cgroup_charge include/linux/memcontrol.h:692 [inline]
folio_prealloc+0x52/0x170 mm/memory.c:1068
wp_page_copy mm/memory.c:3336 [inline]
do_wp_page+0x11cc/0x52f0 mm/memory.c:3728
handle_pte_fault+0x117e/0x7040 mm/memory.c:5537
__handle_mm_fault mm/memory.c:5664 [inline]
handle_mm_fault+0x10df/0x1ba0 mm/memory.c:5829
do_user_addr_fault arch/x86/mm/fault.c:1389 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x2b9/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:rep_movs_alternative+0x4a/0x70 arch/x86/lib/copy_user_64.S:71
Code: 75 f1 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb c9 a4 c3 cc cc cc cc 48 89 c8 48 c1 e9 03 83 e0 07 f3 48 a5 89 c1
RSP: 0018:ffffc9000326f958 EFLAGS: 00050206
RAX: ffff8880129b4001 RBX: 0000000020526e80 RCX: 0000000000000e80
RDX: 0000000000000000 RSI: ffff8880129b4180 RDI: 0000000020526000
RBP: ffffc9000326fad8 R08: ffff8880129b4fff R09: 1ffff110025369ff
R10: dffffc0000000000 R11: ffffed1002536a00 R12: dffffc0000000000
R13: 1ffff9200064df40 R14: 0000000000001000 R15: ffff8880129b4000
copy_user_generic arch/x86/include/asm/uaccess_64.h:110 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:131 [inline]
copy_to_user_iter lib/iov_iter.c:25 [inline]
iterate_iovec include/linux/iov_iter.h:51 [inline]
iterate_and_advance2 include/linux/iov_iter.h:247 [inline]
iterate_and_advance include/linux/iov_iter.h:271 [inline]
_copy_to_iter+0x4c0/0x1960 lib/iov_iter.c:185
copy_page_to_iter+0xb1/0x160 lib/iov_iter.c:362
process_vm_rw_pages mm/process_vm_access.c:45 [inline]
process_vm_rw_single_vec mm/process_vm_access.c:118 [inline]
process_vm_rw_core mm/process_vm_access.c:216 [inline]
process_vm_rw+0x871/0xcf0 mm/process_vm_access.c:284
__do_sys_process_vm_readv mm/process_vm_access.c:296 [inline]
__se_sys_process_vm_readv mm/process_vm_access.c:292 [inline]
__x64_sys_process_vm_readv+0xe0/0x100 mm/process_vm_access.c:292
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: 0033:0x7fc19967d0a9
RSP: 002b:00007fc19a4220c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000136
RAX: ffffffffffffffda RBX: 00007fc1997b3f80 RCX: 00007fc19967d0a9
RDX: 0000000000000002 RSI: 0000000020008400 RDI: 00000000000000c5
RBP: 00007fc1996ec074 R08: 0000000000000286 R09: 0000000000000000
R10: 0000000020008640 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fc1997b3f80 R15: 00007ffc9b8dd568
rcu: rcu_preempt kthread starved for 10422 jiffies! g18049 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:26448 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5249 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6594
__schedule_loop kernel/sched/core.c:6671 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6686
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2020
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2222
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
DEBUG: waiting rtnl_mutex for 10609 jiffies.
task:kworker/u8:5 state:D stack:19544 pid:954 tgid:954 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5249 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6594
__schedule_loop kernel/sched/core.c:6671 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6686
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6743
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
process_one_work kernel/workqueue.c:3224 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305
worker_thread+0x86d/0xd50 kernel/workqueue.c:3385
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
3 locks held by kworker/u8:4/82:
3 locks held by kworker/u8:5/954:
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline]
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
#2: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
2 locks held by udevd/4544:
2 locks held by getty/4847:
#0: ffff88802e9d20a0 (&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:2211
3 locks held by kworker/0:3/5124:
2 locks held by udevd/5236:
2 locks held by syz-executor.0/5402:
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffff88807cc880e0 (&type->s_umount_key#33){++++}-{3:3}, at: ovl_sync_fs+0x11b/0x180 fs/overlayfs/super.c:231
1 lock held by udevd/5409:
2 locks held by udevd/5770:
1 lock held by syz-executor.3/6036:
#0: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723
1 lock held by syz-executor.4/6320:
2 locks held by syz-executor.1/6327:
2 locks held by syz-executor.1/6328:
2 locks held by sed/6365:
=============================================
DEBUG: waiting rtnl_mutex for 10753 jiffies.
task:kworker/u8:5 state:D stack:19544 pid:954 tgid:954 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5249 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6594
__schedule_loop kernel/sched/core.c:6671 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6686
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6743
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
process_one_work kernel/workqueue.c:3224 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305
worker_thread+0x86d/0xd50 kernel/workqueue.c:3385
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
3 locks held by kworker/u8:4/82:
3 locks held by kworker/u8:5/954:
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline]
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
#2: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
2 locks held by udevd/4544:
2 locks held by getty/4847:
#0: ffff88802e9d20a0 (&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:2211
3 locks held by kworker/0:3/5124:
2 locks held by udevd/5236:
2 locks held by syz-executor.0/5402:
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffff88807cc880e0 (&type->s_umount_key#33){++++}-{3:3}, at: ovl_sync_fs+0x11b/0x180 fs/overlayfs/super.c:231
1 lock held by udevd/5409:
2 locks held by udevd/5770:
1 lock held by syz-executor.3/6036:
#0: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723
1 lock held by syz-executor.4/6320:
2 locks held by syz-executor.1/6327:
2 locks held by syz-executor.1/6328:
2 locks held by sed/6365:
=============================================
DEBUG: waiting rtnl_mutex for 10897 jiffies.
task:kworker/u8:5 state:D stack:19544 pid:954 tgid:954 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5249 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6594
__schedule_loop kernel/sched/core.c:6671 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6686
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6743
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
process_one_work kernel/workqueue.c:3224 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305
worker_thread+0x86d/0xd50 kernel/workqueue.c:3385
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
3 locks held by kworker/u8:4/82:
3 locks held by kworker/u8:5/954:
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline]
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
#2: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
2 locks held by udevd/4544:
2 locks held by getty/4847:
#0: ffff88802e9d20a0 (&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:2211
3 locks held by kworker/0:3/5124:
2 locks held by udevd/5236:
2 locks held by syz-executor.0/5402:
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffff88807cc880e0 (&type->s_umount_key#33){++++}-{3:3}, at: ovl_sync_fs+0x11b/0x180 fs/overlayfs/super.c:231
1 lock held by udevd/5409:
2 locks held by udevd/5770:
1 lock held by syz-executor.3/6036:
#0: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723
2 locks held by syz-executor.4/6320:
2 locks held by syz-executor.1/6327:
2 locks held by syz-executor.1/6328:
2 locks held by sed/6365:
=============================================
DEBUG: waiting rtnl_mutex for 11041 jiffies.
task:kworker/u8:5 state:D stack:19544 pid:954 tgid:954 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5249 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6594
__schedule_loop kernel/sched/core.c:6671 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6686
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6743
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
process_one_work kernel/workqueue.c:3224 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305
worker_thread+0x86d/0xd50 kernel/workqueue.c:3385
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
3 locks held by kworker/u8:4/82:
3 locks held by kworker/u8:5/954:
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline]
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
#2: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
2 locks held by udevd/4544:
2 locks held by getty/4847:
#0: ffff88802e9d20a0 (&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:2211
3 locks held by kworker/0:3/5124:
2 locks held by udevd/5236:
2 locks held by syz-executor.0/5402:
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffff88807cc880e0 (&type->s_umount_key#33){++++}-{3:3}, at: ovl_sync_fs+0x11b/0x180 fs/overlayfs/super.c:231
1 lock held by udevd/5409:
2 locks held by udevd/5770:
1 lock held by syz-executor.3/6036:
#0: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723
2 locks held by syz-executor.1/6327:
2 locks held by syz-executor.1/6328:
2 locks held by sed/6365:
=============================================
DEBUG: waiting rtnl_mutex for 11185 jiffies.
task:kworker/u8:5 state:D stack:19544 pid:954 tgid:954 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5249 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6594
__schedule_loop kernel/sched/core.c:6671 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6686
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6743
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
process_one_work kernel/workqueue.c:3224 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305
worker_thread+0x86d/0xd50 kernel/workqueue.c:3385
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
3 locks held by kworker/u8:4/82:
3 locks held by kworker/u8:5/954:
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline]
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
#2: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
2 locks held by udevd/4544:
2 locks held by getty/4847:
#0: ffff88802e9d20a0 (&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:2211
3 locks held by kworker/0:3/5124:
2 locks held by udevd/5236:
2 locks held by syz-executor.0/5402:
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffff88807cc880e0 (&type->s_umount_key#33){++++}-{3:3}, at: ovl_sync_fs+0x11b/0x180 fs/overlayfs/super.c:231
1 lock held by udevd/5409:
2 locks held by udevd/5770:
1 lock held by syz-executor.3/6036:
#0: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723
2 locks held by syz-executor.1/6327:
2 locks held by syz-executor.1/6328:
2 locks held by sed/6365:
=============================================
DEBUG: waiting rtnl_mutex for 11329 jiffies.
task:kworker/u8:5 state:D stack:19544 pid:954 tgid:954 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5249 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6594
__schedule_loop kernel/sched/core.c:6671 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6686
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6743
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
process_one_work kernel/workqueue.c:3224 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305
worker_thread+0x86d/0xd50 kernel/workqueue.c:3385
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
3 locks held by kworker/u8:4/82:
3 locks held by kworker/u8:5/954:
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline]
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
#2: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
2 locks held by udevd/4544:
2 locks held by getty/4847:
#0: ffff88802e9d20a0 (&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:2211
3 locks held by kworker/0:3/5124:
2 locks held by udevd/5236:
2 locks held by syz-executor.0/5402:
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802ea700e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffff88807cc880e0 (&type->s_umount_key#33){++++}-{3:3}, at: ovl_sync_fs+0x11b/0x180 fs/overlayfs/super.c:231
1 lock held by udevd/5409:
2 locks held by udevd/5770:
1 lock held by syz-executor.3/6036:
#0: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x839/0x1170 net/core/rtnetlink.c:6723
2 locks held by syz-executor.1/6327:
2 locks held by syz-executor.1/6328:
2 locks held by sed/6365:
=============================================
DEBUG: waiting rtnl_mutex for 11473 jiffies.
task:kworker/u8:5 state:D stack:19544 pid:954 tgid:954 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5249 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6594
__schedule_loop kernel/sched/core.c:6671 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6686
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6743
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
process_one_work kernel/workqueue.c:3224 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3305
worker_thread+0x86d/0xd50 kernel/workqueue.c:3385
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
3 locks held by kworker/u8:4/82:
3 locks held by kworker/u8:5/954:
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3199 [inline]
#0: ffff888029be2148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3305
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3200 [inline]
#1: ffffc90003ef7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3305
#2: ffffffff8f5f7d08 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
2 locks held by udevd/4544:
2 locks held by getty/4847:
#0: ffff88802e9d20a0 (&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:2211
3 locks held by kworker/0:3/5124:
2 locks held by udevd/5236:
2 locks held by syz-executor.0/5402: