#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:959
5 locks held by syz-executor.1/5448:
=============================================
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: (detected by 1, t=10502 jiffies, g=8477, q=526 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294955336-4294944834), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g8477 f0x2 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:24912 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2029
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2231
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:
CPU: 1 PID: 5447 Comm: syz-executor.2 Not tainted 6.10.0-rc3-next-20240611-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5066
Code: c9 50 e8 69 b6 0b 00 48 83 c4 08 4c 89 f7 e8 7d 38 00 00 0f 1f 44 00 00 4c 89 f7 e8 40 ff 31 0a e8 0b 30 37 00 fb 48 8b 5d c0 <48> 8d bb f8 15 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc90009327628 EFLAGS: 00000282
RAX: 4fae675c8c058300 RBX: ffff8880232c1e00 RCX: ffffffff947c3803
RDX: dffffc0000000000 RSI: ffffffff8bcac1a0 RDI: ffffffff8c200760
RBP: ffffc90009327670 R08: ffffffff8fae04af R09: 1ffffffff1f5c095
R10: dffffc0000000000 R11: fffffbfff1f5c096 R12: 1ffff110172a7ec7
R13: dffffc0000000000 R14: ffff8880b953e8c0 R15: ffff8880b953f638
FS: 00007fa3785bd6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa3785ddf00 CR3: 0000000067854000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
context_switch kernel/sched/core.c:5195 [inline]
__schedule+0x17f0/0x4a20 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
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:__schedule_loop kernel/sched/core.c:6605 [inline]
RIP: 0010:schedule+0x13f/0x320 kernel/sched/core.c:6621
Code: e5 fa f8 48 c7 c7 60 22 1f 8e 4c 89 f6 e8 c9 74 db f5 48 89 eb 48 c1 eb 03 eb 0a 48 f7 45 00 08 00 00 00 74 2c bf 01 00 00 00 3c 82 ce f5 31 ff e8 85 b4 ff ff bf 01 00 00 00 e8 cb 83 ce f5
RSP: 0018:ffffc90009327a00 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 1ffff110046583c0 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcac1a0 RDI: 0000000000000001
RBP: ffff8880232c1e00 R08: ffffffff8fae04af R09: 1ffffffff1f5c095
R10: dffffc0000000000 R11: fffffbfff1f5c096 R12: dffffc0000000000
R13: ffffc90009327af8 R14: ffffffff8b93edc0 R15: ffff8880232c3078
futex_wait_queue+0x14e/0x1d0 kernel/futex/waitwake.c:370
__futex_wait+0x17f/0x320 kernel/futex/waitwake.c:669
futex_wait+0x101/0x360 kernel/futex/waitwake.c:697
do_futex+0x33b/0x560 kernel/futex/syscalls.c:102
__do_sys_futex kernel/futex/syscalls.c:179 [inline]
__se_sys_futex+0x3f9/0x480 kernel/futex/syscalls.c:160
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: 0033:0x7fa378a7cea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa3785bd178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fa378bb4128 RCX: 00007fa378a7cea9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fa378bb4128
RBP: 00007fa378bb4120 R08: 00007fa3785bd6c0 R09: 00007fa3785bd6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa378bb412c
R13: 000000000000006e R14: 00007ffddc50e340 R15: 00007ffddc50e428
DEBUG: holding rtnl_mutex for 10589 jiffies.
task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:save_stack+0x185/0x1f0 mm/page_owner.c:163
Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48
RSP: 0018:ffffc90009a17050 EFLAGS: 00000246
RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00
RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000
RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010
R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820
R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000
__set_page_owner+0x92/0x800 mm/page_owner.c:320
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1470
prep_new_page mm/page_alloc.c:1478 [inline]
get_page_from_freelist+0x2cbd/0x2d70 mm/page_alloc.c:3457
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4715
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x5f/0x120 mm/slub.c:2283
allocate_slab+0x5a/0x2f0 mm/slub.c:2446
new_slab mm/slub.c:2499 [inline]
___slab_alloc+0xcd1/0x14b0 mm/slub.c:3685
__slab_alloc+0x58/0xa0 mm/slub.c:3775
__slab_alloc_node mm/slub.c:3828 [inline]
slab_alloc_node mm/slub.c:4007 [inline]
kmem_cache_alloc_node_noprof+0x1fe/0x320 mm/slub.c:4062
__alloc_skb+0x1c3/0x440 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1314 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
inet6_ifa_notify net/ipv6/addrconf.c:5605 [inline]
__ipv6_ifa_notify+0x2e9/0x11f0 net/ipv6/addrconf.c:6254
ipv6_ifa_notify net/ipv6/addrconf.c:6306 [inline]
addrconf_dad_completed+0x181/0xcd0 net/ipv6/addrconf.c:4319
addrconf_dad_work+0xdc2/0x16f0
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
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/0:1/9:
2 locks held by kworker/1:0/25:
2 locks held by kworker/u8:2/35:
3 locks held by kworker/u8:7/2826:
2 locks held by getty/4846:
#0: ffff88802a7a90a0 (&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+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
1 lock held by syz-executor.0/5395:
2 locks held by syz-executor.3/5426:
#0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:471 [inline]
#0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 fs/fsopen.c:345
#1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 fs/super.c:344
1 lock held by syz-executor.4/5435:
#0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:2106 [inline]
#0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2119
1 lock held by syz-executor.2/5441:
#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:959
3 locks held by syz-executor.2/5447:
#0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 kernel/time/timer.c:1789
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 net/core/rtnetlink.c:95
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6689
5 locks held by syz-executor.1/5448:
=============================================
DEBUG: holding rtnl_mutex for 10757 jiffies.
task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:save_stack+0x185/0x1f0 mm/page_owner.c:163
Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48
RSP: 0018:ffffc90009a17050 EFLAGS: 00000246
RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00
RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000
RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010
R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820
R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000
__set_page_owner+0x92/0x800 mm/page_owner.c:320
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1470
prep_new_page mm/page_alloc.c:1478 [inline]
get_page_from_freelist+0x2cbd/0x2d70 mm/page_alloc.c:3457
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4715
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x5f/0x120 mm/slub.c:2283
allocate_slab+0x5a/0x2f0 mm/slub.c:2446
new_slab mm/slub.c:2499 [inline]
___slab_alloc+0xcd1/0x14b0 mm/slub.c:3685
__slab_alloc+0x58/0xa0 mm/slub.c:3775
__slab_alloc_node mm/slub.c:3828 [inline]
slab_alloc_node mm/slub.c:4007 [inline]
kmem_cache_alloc_node_noprof+0x1fe/0x320 mm/slub.c:4062
__alloc_skb+0x1c3/0x440 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1314 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
inet6_ifa_notify net/ipv6/addrconf.c:5605 [inline]
__ipv6_ifa_notify+0x2e9/0x11f0 net/ipv6/addrconf.c:6254
ipv6_ifa_notify net/ipv6/addrconf.c:6306 [inline]
addrconf_dad_completed+0x181/0xcd0 net/ipv6/addrconf.c:4319
addrconf_dad_work+0xdc2/0x16f0
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
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/0:1/9:
2 locks held by kworker/1:0/25:
3 locks held by kworker/1:0H/26:
#0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 kernel/time/timer.c:1789
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 net/core/rtnetlink.c:95
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6689
2 locks held by kworker/u8:2/35:
3 locks held by kworker/u8:7/2826:
2 locks held by getty/4846:
#0: ffff88802a7a90a0 (&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+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
1 lock held by syz-executor.0/5395:
2 locks held by syz-executor.3/5426:
#0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:471 [inline]
#0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 fs/fsopen.c:345
#1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 fs/super.c:344
1 lock held by syz-executor.4/5435:
#0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:2106 [inline]
#0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2119
1 lock held by syz-executor.2/5441:
#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:959
5 locks held by syz-executor.1/5448:
=============================================
DEBUG: holding rtnl_mutex for 10925 jiffies.
task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:save_stack+0x185/0x1f0 mm/page_owner.c:163
Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48
RSP: 0018:ffffc90009a17050 EFLAGS: 00000246
RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00
RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000
RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010
R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820
R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000
__set_page_owner+0x92/0x800 mm/page_owner.c:320
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1470
prep_new_page mm/page_alloc.c:1478 [inline]
get_page_from_freelist+0x2cbd/0x2d70 mm/page_alloc.c:3457
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4715
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x5f/0x120 mm/slub.c:2283
allocate_slab+0x5a/0x2f0 mm/slub.c:2446
new_slab mm/slub.c:2499 [inline]
___slab_alloc+0xcd1/0x14b0 mm/slub.c:3685
__slab_alloc+0x58/0xa0 mm/slub.c:3775
__slab_alloc_node mm/slub.c:3828 [inline]
slab_alloc_node mm/slub.c:4007 [inline]
kmem_cache_alloc_node_noprof+0x1fe/0x320 mm/slub.c:4062
__alloc_skb+0x1c3/0x440 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1314 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
inet6_ifa_notify net/ipv6/addrconf.c:5605 [inline]
__ipv6_ifa_notify+0x2e9/0x11f0 net/ipv6/addrconf.c:6254
ipv6_ifa_notify net/ipv6/addrconf.c:6306 [inline]
addrconf_dad_completed+0x181/0xcd0 net/ipv6/addrconf.c:4319
addrconf_dad_work+0xdc2/0x16f0
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
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/0:1/9:
2 locks held by kworker/1:0/25:
3 locks held by kworker/1:0H/26:
#0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 kernel/time/timer.c:1789
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 net/core/rtnetlink.c:95
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6689
2 locks held by kworker/u8:2/35:
3 locks held by kworker/u8:7/2826:
2 locks held by getty/4846:
#0: ffff88802a7a90a0 (&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+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
1 lock held by syz-executor.0/5395:
2 locks held by syz-executor.3/5426:
#0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:471 [inline]
#0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 fs/fsopen.c:345
#1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 fs/super.c:344
1 lock held by syz-executor.4/5435:
#0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:2106 [inline]
#0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2119
1 lock held by syz-executor.2/5441:
#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:959
5 locks held by syz-executor.1/5448:
=============================================
DEBUG: holding rtnl_mutex for 11093 jiffies.
task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:save_stack+0x185/0x1f0 mm/page_owner.c:163
Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48
RSP: 0018:ffffc90009a17050 EFLAGS: 00000246
RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00
RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000
RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010
R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820
R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000
__set_page_owner+0x92/0x800 mm/page_owner.c:320
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1470
prep_new_page mm/page_alloc.c:1478 [inline]
get_page_from_freelist+0x2cbd/0x2d70 mm/page_alloc.c:3457
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4715
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x5f/0x120 mm/slub.c:2283
allocate_slab+0x5a/0x2f0 mm/slub.c:2446
new_slab mm/slub.c:2499 [inline]
___slab_alloc+0xcd1/0x14b0 mm/slub.c:3685
__slab_alloc+0x58/0xa0 mm/slub.c:3775
__slab_alloc_node mm/slub.c:3828 [inline]
slab_alloc_node mm/slub.c:4007 [inline]
kmem_cache_alloc_node_noprof+0x1fe/0x320 mm/slub.c:4062
__alloc_skb+0x1c3/0x440 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1314 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
inet6_ifa_notify net/ipv6/addrconf.c:5605 [inline]
__ipv6_ifa_notify+0x2e9/0x11f0 net/ipv6/addrconf.c:6254
ipv6_ifa_notify net/ipv6/addrconf.c:6306 [inline]
addrconf_dad_completed+0x181/0xcd0 net/ipv6/addrconf.c:4319
addrconf_dad_work+0xdc2/0x16f0
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
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/0:1/9:
2 locks held by kworker/1:0/25:
2 locks held by kworker/u8:2/35:
3 locks held by kworker/u8:7/2826:
2 locks held by getty/4846:
#0: ffff88802a7a90a0 (&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+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
1 lock held by syz-executor.0/5395:
2 locks held by syz-executor.3/5426:
#0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:471 [inline]
#0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 fs/fsopen.c:345
#1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 fs/super.c:344
1 lock held by syz-executor.4/5435:
#0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:2106 [inline]
#0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2119
1 lock held by syz-executor.2/5441:
#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:959
3 locks held by syz-executor.2/5446:
#0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 kernel/time/timer.c:1789
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 net/core/rtnetlink.c:95
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6689
5 locks held by syz-executor.1/5448:
=============================================
DEBUG: holding rtnl_mutex for 11261 jiffies.
task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:save_stack+0x185/0x1f0 mm/page_owner.c:163
Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48
RSP: 0018:ffffc90009a17050 EFLAGS: 00000246
RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00
RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000
RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010
R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820
R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000
__set_page_owner+0x92/0x800 mm/page_owner.c:320
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1470
prep_new_page mm/page_alloc.c:1478 [inline]
get_page_from_freelist+0x2cbd/0x2d70 mm/page_alloc.c:3457
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4715
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x5f/0x120 mm/slub.c:2283
allocate_slab+0x5a/0x2f0 mm/slub.c:2446
new_slab mm/slub.c:2499 [inline]
___slab_alloc+0xcd1/0x14b0 mm/slub.c:3685
__slab_alloc+0x58/0xa0 mm/slub.c:3775
__slab_alloc_node mm/slub.c:3828 [inline]
slab_alloc_node mm/slub.c:4007 [inline]
kmem_cache_alloc_node_noprof+0x1fe/0x320 mm/slub.c:4062
__alloc_skb+0x1c3/0x440 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1314 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
inet6_ifa_notify net/ipv6/addrconf.c:5605 [inline]
__ipv6_ifa_notify+0x2e9/0x11f0 net/ipv6/addrconf.c:6254
ipv6_ifa_notify net/ipv6/addrconf.c:6306 [inline]
addrconf_dad_completed+0x181/0xcd0 net/ipv6/addrconf.c:4319
addrconf_dad_work+0xdc2/0x16f0
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
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/0:1/9:
2 locks held by kworker/1:0/25:
2 locks held by kworker/u8:2/35:
3 locks held by kworker/u8:7/2826:
2 locks held by getty/4846:
#0: ffff88802a7a90a0 (&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+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
1 lock held by syz-executor.0/5395:
2 locks held by syz-executor.3/5426:
#0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:471 [inline]
#0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 fs/fsopen.c:345
#1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 fs/super.c:344
1 lock held by syz-executor.4/5435:
#0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:2106 [inline]
#0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2119
1 lock held by syz-executor.2/5441:
#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:959
3 locks held by syz-executor.2/5446:
#0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 kernel/time/timer.c:1789
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 net/core/rtnetlink.c:95
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6689
5 locks held by syz-executor.1/5448:
=============================================
DEBUG: holding rtnl_mutex for 11429 jiffies.
task:kworker/u8:7 state:R running task stack:23600 pid:2826 tgid:2826 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:save_stack+0x185/0x1f0 mm/page_owner.c:163
Code: 44 2c 14 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 e0 00 00 00 75 6a 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc 89 d9 80 e1 07 fe c1 38 c1 0f 8c 14 ff ff ff 48
RSP: 0018:ffffc90009a17050 EFLAGS: 00000246
RAX: 00000000040a0252 RBX: 0000000000000000 RCX: ffff88802b5fda00
RDX: 0000000000000000 RSI: 00000000040a0252 RDI: 0000000000000000
RBP: ffffc90009a17050 R08: ffffffff82038425 R09: 0000000000000010
R10: 0000000000000003 R11: ffffffff817ef6f0 R12: 0000000000152820
R13: 0000000000000001 R14: ffffea0000b4e780 R15: dffffc0000000000
__set_page_owner+0x92/0x800 mm/page_owner.c:320
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1470
prep_new_page mm/page_alloc.c:1478 [inline]
get_page_from_freelist+0x2cbd/0x2d70 mm/page_alloc.c:3457
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4715
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x5f/0x120 mm/slub.c:2283
allocate_slab+0x5a/0x2f0 mm/slub.c:2446
new_slab mm/slub.c:2499 [inline]
___slab_alloc+0xcd1/0x14b0 mm/slub.c:3685
__slab_alloc+0x58/0xa0 mm/slub.c:3775
__slab_alloc_node mm/slub.c:3828 [inline]
slab_alloc_node mm/slub.c:4007 [inline]
kmem_cache_alloc_node_noprof+0x1fe/0x320 mm/slub.c:4062
__alloc_skb+0x1c3/0x440 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1314 [inline]
nlmsg_new include/net/netlink.h:1015 [inline]
inet6_ifa_notify net/ipv6/addrconf.c:5605 [inline]
__ipv6_ifa_notify+0x2e9/0x11f0 net/ipv6/addrconf.c:6254
ipv6_ifa_notify net/ipv6/addrconf.c:6306 [inline]
addrconf_dad_completed+0x181/0xcd0 net/ipv6/addrconf.c:4319
addrconf_dad_work+0xdc2/0x16f0
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
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/0:1/9:
2 locks held by kworker/1:0/25:
2 locks held by kworker/u8:2/35:
3 locks held by kworker/u8:7/2826:
2 locks held by getty/4846:
#0: ffff88802a7a90a0 (&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+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
1 lock held by syz-executor.0/5395:
2 locks held by syz-executor.3/5426:
#0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:471 [inline]
#0: ffff888021f53070 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x9a7/0xf80 fs/fsopen.c:345
#1: ffff88807db3c0e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 fs/super.c:344
1 lock held by syz-executor.4/5435:
#0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:2106 [inline]
#0: ffffc900093f90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region+0x62/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2119
1 lock held by syz-executor.2/5441:
#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#0: ffffffff8e33a878 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:959
3 locks held by syz-executor.2/5446:
#0: ffffc90000a18c00 (net/core/rtnetlink.c:82){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x650 kernel/time/timer.c:1789
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#1: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: report_rtnl_holders+0x20/0x2d0 net/core/rtnetlink.c:95
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#2: ffffffff8e3354a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6689
5 locks held by syz-executor.1/5448:
=============================================