Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6925
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P18210/1:b..l P18223/3:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=91197, q=771 ncpus=2)
task:syz.3.2783      state:R  running task     stack:27024 pid:18223 tgid:18223 ppid:17639  flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6782
 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6806
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 filemap_map_pages+0x1707/0x1e70 mm/filemap.c:3655
 do_fault_around mm/memory.c:5026 [inline]
 do_read_fault mm/memory.c:5059 [inline]
 do_fault mm/memory.c:5198 [inline]
 do_pte_missing mm/memory.c:3954 [inline]
 handle_pte_fault+0x399e/0x6eb0 mm/memory.c:5529
 __handle_mm_fault mm/memory.c:5672 [inline]
 handle_mm_fault+0xff1/0x19a0 mm/memory.c:5837
 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f76dae3c695
RSP: 002b:00007ffd4b5be0b0 EFLAGS: 00010287
RAX: 00007f76daa00000 RBX: 00007f76daa00000 RCX: 0000000000000000
RDX: 00007f76daa00000 RSI: 00007ffd4b5be210 RDI: 00007ffd4b5be178
RBP: 00007ffd4b5be210 R08: 00007f76dae00000 R09: 00007ffd4b5bde04
R10: 0000000000000000 R11: 0000000000000000 R12: 00007ffd4b5be3a0
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffd4b5be3a0
 </TASK>
task:syz.0.2778      state:R  running task     stack:21424 pid:18210 tgid:18209 ppid:17859  flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6925
 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:__kasan_check_read+0x4/0x20 mm/kasan/shadow.c:31
Code: e8 a1 b1 95 09 31 db eb d0 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <89> f6 48 8b 0c 24 31 d2 e9 6f e6 ff ff 66 2e 0f 1f 84 00 00 00 00
RSP: 0018:ffffc9000314f6f8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8faffd68
RBP: ffffc9000314f848 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: ffff888040efda00 R12: 1ffff92000629ee8
R13: dffffc0000000000 R14: 0000000000000000 R15: 00007fdb61575bd9
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 cpumask_test_cpu include/linux/cpumask.h:562 [inline]
 cpu_online include/linux/cpumask.h:1113 [inline]
 trace_lock_acquire include/trace/events/lock.h:24 [inline]
 lock_acquire+0xd4/0x550 kernel/locking/lockdep.c:5793
 rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
 rcu_read_lock include/linux/rcupdate.h:838 [inline]
 is_bpf_text_address+0x46/0x2a0 kernel/bpf/core.c:767
 kernel_text_address+0xa7/0xe0 kernel/extable.c:125
 __kernel_text_address+0xd/0x40 kernel/extable.c:79
 unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
 arch_stack_walk+0x125/0x1b0 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3988 [inline]
 slab_alloc_node mm/slub.c:4037 [inline]
 kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044
 lsm_inode_alloc security/security.c:670 [inline]
 security_inode_alloc+0x28/0x120 security/security.c:1587
 inode_init_always+0x966/0xc90 fs/inode.c:233
 alloc_inode fs/inode.c:270 [inline]
 new_inode_pseudo fs/inode.c:1028 [inline]
 new_inode+0xa7/0x310 fs/inode.c:1047
 __shmem_get_inode mm/shmem.c:2662 [inline]
 shmem_get_inode+0x34a/0xd50 mm/shmem.c:2733
 __shmem_file_setup+0x171/0x2c0 mm/shmem.c:5095
 __do_sys_memfd_create mm/memfd.c:391 [inline]
 __se_sys_memfd_create+0x36b/0x850 mm/memfd.c:328
 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: 0033:0x7fdb61575bd9
RSP: 002b:00007fdb62320048 EFLAGS: 00000246 ORIG_RAX: 000000000000013f
RAX: ffffffffffffffda RBX: 00007fdb61703f60 RCX: 00007fdb61575bd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080
RBP: 00007fdb615e4e60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fdb61703f60 R15: 00007ffdf6b2e238
 </TASK>
rcu: rcu_preempt kthread starved for 10282 jiffies! g91197 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:25648 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
 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
 </TASK>
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:111
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:arch_stack_walk+0x11d/0x1b0 arch/x86/kernel/stacktrace.c:26
Code: bd 70 ff ff ff 4c 89 e6 4c 89 fa e8 ad d1 09 00 8b 9d 70 ff ff ff 31 ff 89 de e8 be 69 5c 00 85 db 74 4b 4c 8d bd 70 ff ff ff <4c> 89 ff e8 0b a0 09 00 48 89 c3 31 ff 48 89 c6 e8 3e 6a 5c 00 48
RSP: 0018:ffffc90004baf000 EFLAGS: 00000293
RAX: ffffffff813765bf RBX: ffffffff895ab651 RCX: ffff888028c5da00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90004baf090 R08: ffffffff814125c5 R09: ffffffff814120bf
R10: 0000000000000003 R11: ffff888028c5da00 R12: ffff888028c5da00
R13: ffffffff817f7110 R14: ffffc90004baf0e0 R15: ffffc90004baf000
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:4158 [inline]
 __kmalloc_node_track_caller_noprof+0x225/0x440 mm/slub.c:4177
 kmalloc_reserve+0x111/0x2a0 net/core/skbuff.c:605
 __alloc_skb+0x1f3/0x440 net/core/skbuff.c:674
 alloc_skb include/linux/skbuff.h:1320 [inline]
 nlmsg_new include/net/netlink.h:1015 [inline]
 rtmsg_ifinfo_build_skb+0x84/0x260 net/core/rtnetlink.c:4157
 rtmsg_ifinfo_event net/core/rtnetlink.c:4200 [inline]
 rtmsg_ifinfo+0x91/0x1b0 net/core/rtnetlink.c:4209
 dev_close_many+0x2e1/0x4c0 net/core/dev.c:1586
 unregister_netdevice_many_notify+0x537/0x1d20 net/core/dev.c:11318
 unregister_netdevice_many net/core/dev.c:11405 [inline]
 default_device_exit_batch+0xa0f/0xa90 net/core/dev.c:11888
 ops_exit_list net/core/net_namespace.c:178 [inline]
 cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 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
 </TASK>
DEBUG: waiting rtnl_mutex for 10674 jiffies.
task:syz-executor    state:D stack:25840 pid:18211 tgid:18211 ppid:18187  flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 rtnl_lock net/core/rtnetlink.c:149 [inline]
 rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204
 __do_sys_sendto net/socket.c:2216 [inline]
 __se_sys_sendto net/socket.c:2212 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2212
 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: 0033:0x7f649637796c
RSP: 002b:00007ffc95c14b40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f6497034620 RCX: 00007f649637796c
RDX: 000000000000002c RSI: 00007f6497034670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffc95c14b94 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f6497034670 R15: 0000000000000000
 </TASK>
DEBUG: waiting rtnl_mutex for 10675 jiffies.
task:kworker/1:2     state:D stack:21896 pid:1802  tgid:1802  ppid:2      flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 linkwatch_event+0xe/0x60 net/core/link_watch.c:276
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 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
 </TASK>
INFO: lockdep is turned off.
DEBUG: holding rtnl_mutex for 10829 jiffies.
task:kworker/u8:30   state:R  running task     stack:21096 pid:14935 tgid:14935 ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6925
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:arch_stack_walk+0x11d/0x1b0 arch/x86/kernel/stacktrace.c:26
Code: bd 70 ff ff ff 4c 89 e6 4c 89 fa e8 ad d1 09 00 8b 9d 70 ff ff ff 31 ff 89 de e8 be 69 5c 00 85 db 74 4b 4c 8d bd 70 ff ff ff <4c> 89 ff e8 0b a0 09 00 48 89 c3 31 ff 48 89 c6 e8 3e 6a 5c 00 48
RSP: 0018:ffffc90004baf000 EFLAGS: 00000293
RAX: ffffffff813765bf RBX: ffffffff895ab651 RCX: ffff888028c5da00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90004baf090 R08: ffffffff814125c5 R09: ffffffff814120bf
R10: 0000000000000003 R11: ffff888028c5da00 R12: ffff888028c5da00
R13: ffffffff817f7110 R14: ffffc90004baf0e0 R15: ffffc90004baf000
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:4158 [inline]
 __kmalloc_node_track_caller_noprof+0x225/0x440 mm/slub.c:4177
 kmalloc_reserve+0x111/0x2a0 net/core/skbuff.c:605
 __alloc_skb+0x1f3/0x440 net/core/skbuff.c:674
 alloc_skb include/linux/skbuff.h:1320 [inline]
 nlmsg_new include/net/netlink.h:1015 [inline]
 rtmsg_ifinfo_build_skb+0x84/0x260 net/core/rtnetlink.c:4157
 rtmsg_ifinfo_event net/core/rtnetlink.c:4200 [inline]
 rtmsg_ifinfo+0x91/0x1b0 net/core/rtnetlink.c:4209
 dev_close_many+0x2e1/0x4c0 net/core/dev.c:1586
 unregister_netdevice_many_notify+0x537/0x1d20 net/core/dev.c:11318
 unregister_netdevice_many net/core/dev.c:11405 [inline]
 default_device_exit_batch+0xa0f/0xa90 net/core/dev.c:11888
 ops_exit_list net/core/net_namespace.c:178 [inline]
 cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 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
 </TASK>
DEBUG: waiting rtnl_mutex for 10878 jiffies.
task:syz-executor    state:D stack:25840 pid:18211 tgid:18211 ppid:18187  flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 rtnl_lock net/core/rtnetlink.c:149 [inline]
 rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204
 __do_sys_sendto net/socket.c:2216 [inline]
 __se_sys_sendto net/socket.c:2212 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2212
 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: 0033:0x7f649637796c
RSP: 002b:00007ffc95c14b40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f6497034620 RCX: 00007f649637796c
RDX: 000000000000002c RSI: 00007f6497034670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffc95c14b94 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f6497034670 R15: 0000000000000000
 </TASK>
DEBUG: waiting rtnl_mutex for 10879 jiffies.
task:kworker/1:2     state:D stack:21896 pid:1802  tgid:1802  ppid:2      flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 linkwatch_event+0xe/0x60 net/core/link_watch.c:276
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 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
 </TASK>
INFO: lockdep is turned off.
DEBUG: holding rtnl_mutex for 11029 jiffies.
task:kworker/u8:30   state:R  running task     stack:21096 pid:14935 tgid:14935 ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6925
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:arch_stack_walk+0x11d/0x1b0 arch/x86/kernel/stacktrace.c:26
Code: bd 70 ff ff ff 4c 89 e6 4c 89 fa e8 ad d1 09 00 8b 9d 70 ff ff ff 31 ff 89 de e8 be 69 5c 00 85 db 74 4b 4c 8d bd 70 ff ff ff <4c> 89 ff e8 0b a0 09 00 48 89 c3 31 ff 48 89 c6 e8 3e 6a 5c 00 48
RSP: 0018:ffffc90004baf000 EFLAGS: 00000293
RAX: ffffffff813765bf RBX: ffffffff895ab651 RCX: ffff888028c5da00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90004baf090 R08: ffffffff814125c5 R09: ffffffff814120bf
R10: 0000000000000003 R11: ffff888028c5da00 R12: ffff888028c5da00
R13: ffffffff817f7110 R14: ffffc90004baf0e0 R15: ffffc90004baf000
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:4158 [inline]
 __kmalloc_node_track_caller_noprof+0x225/0x440 mm/slub.c:4177
 kmalloc_reserve+0x111/0x2a0 net/core/skbuff.c:605
 __alloc_skb+0x1f3/0x440 net/core/skbuff.c:674
 alloc_skb include/linux/skbuff.h:1320 [inline]
 nlmsg_new include/net/netlink.h:1015 [inline]
 rtmsg_ifinfo_build_skb+0x84/0x260 net/core/rtnetlink.c:4157
 rtmsg_ifinfo_event net/core/rtnetlink.c:4200 [inline]
 rtmsg_ifinfo+0x91/0x1b0 net/core/rtnetlink.c:4209
 dev_close_many+0x2e1/0x4c0 net/core/dev.c:1586
 unregister_netdevice_many_notify+0x537/0x1d20 net/core/dev.c:11318
 unregister_netdevice_many net/core/dev.c:11405 [inline]
 default_device_exit_batch+0xa0f/0xa90 net/core/dev.c:11888
 ops_exit_list net/core/net_namespace.c:178 [inline]
 cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 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
 </TASK>
DEBUG: waiting rtnl_mutex for 11078 jiffies.
task:syz-executor    state:D stack:25840 pid:18211 tgid:18211 ppid:18187  flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 rtnl_lock net/core/rtnetlink.c:149 [inline]
 rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204
 __do_sys_sendto net/socket.c:2216 [inline]
 __se_sys_sendto net/socket.c:2212 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2212
 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: 0033:0x7f649637796c
RSP: 002b:00007ffc95c14b40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f6497034620 RCX: 00007f649637796c
RDX: 000000000000002c RSI: 00007f6497034670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffc95c14b94 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f6497034670 R15: 0000000000000000
 </TASK>
DEBUG: waiting rtnl_mutex for 11079 jiffies.
task:kworker/1:2     state:D stack:21896 pid:1802  tgid:1802  ppid:2      flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 linkwatch_event+0xe/0x60 net/core/link_watch.c:276
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 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
 </TASK>
INFO: lockdep is turned off.
DEBUG: holding rtnl_mutex for 11229 jiffies.
task:kworker/u8:30   state:R  running task     stack:21096 pid:14935 tgid:14935 ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6925
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:arch_stack_walk+0x11d/0x1b0 arch/x86/kernel/stacktrace.c:26
Code: bd 70 ff ff ff 4c 89 e6 4c 89 fa e8 ad d1 09 00 8b 9d 70 ff ff ff 31 ff 89 de e8 be 69 5c 00 85 db 74 4b 4c 8d bd 70 ff ff ff <4c> 89 ff e8 0b a0 09 00 48 89 c3 31 ff 48 89 c6 e8 3e 6a 5c 00 48
RSP: 0018:ffffc90004baf000 EFLAGS: 00000293
RAX: ffffffff813765bf RBX: ffffffff895ab651 RCX: ffff888028c5da00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90004baf090 R08: ffffffff814125c5 R09: ffffffff814120bf
R10: 0000000000000003 R11: ffff888028c5da00 R12: ffff888028c5da00
R13: ffffffff817f7110 R14: ffffc90004baf0e0 R15: ffffc90004baf000
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:4158 [inline]
 __kmalloc_node_track_caller_noprof+0x225/0x440 mm/slub.c:4177
 kmalloc_reserve+0x111/0x2a0 net/core/skbuff.c:605
 __alloc_skb+0x1f3/0x440 net/core/skbuff.c:674
 alloc_skb include/linux/skbuff.h:1320 [inline]
 nlmsg_new include/net/netlink.h:1015 [inline]
 rtmsg_ifinfo_build_skb+0x84/0x260 net/core/rtnetlink.c:4157
 rtmsg_ifinfo_event net/core/rtnetlink.c:4200 [inline]
 rtmsg_ifinfo+0x91/0x1b0 net/core/rtnetlink.c:4209
 dev_close_many+0x2e1/0x4c0 net/core/dev.c:1586
 unregister_netdevice_many_notify+0x537/0x1d20 net/core/dev.c:11318
 unregister_netdevice_many net/core/dev.c:11405 [inline]
 default_device_exit_batch+0xa0f/0xa90 net/core/dev.c:11888
 ops_exit_list net/core/net_namespace.c:178 [inline]
 cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 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
 </TASK>
DEBUG: waiting rtnl_mutex for 11278 jiffies.
task:syz-executor    state:D stack:25840 pid:18211 tgid:18211 ppid:18187  flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 rtnl_lock net/core/rtnetlink.c:149 [inline]
 rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204
 __do_sys_sendto net/socket.c:2216 [inline]
 __se_sys_sendto net/socket.c:2212 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2212
 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: 0033:0x7f649637796c
RSP: 002b:00007ffc95c14b40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f6497034620 RCX: 00007f649637796c
RDX: 000000000000002c RSI: 00007f6497034670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffc95c14b94 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f6497034670 R15: 0000000000000000
 </TASK>
DEBUG: waiting rtnl_mutex for 11279 jiffies.
task:kworker/1:2     state:D stack:21896 pid:1802  tgid:1802  ppid:2      flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 linkwatch_event+0xe/0x60 net/core/link_watch.c:276
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 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
 </TASK>
INFO: lockdep is turned off.
DEBUG: holding rtnl_mutex for 11429 jiffies.
task:kworker/u8:30   state:R  running task     stack:21096 pid:14935 tgid:14935 ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6925
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:arch_stack_walk+0x11d/0x1b0 arch/x86/kernel/stacktrace.c:26
Code: bd 70 ff ff ff 4c 89 e6 4c 89 fa e8 ad d1 09 00 8b 9d 70 ff ff ff 31 ff 89 de e8 be 69 5c 00 85 db 74 4b 4c 8d bd 70 ff ff ff <4c> 89 ff e8 0b a0 09 00 48 89 c3 31 ff 48 89 c6 e8 3e 6a 5c 00 48
RSP: 0018:ffffc90004baf000 EFLAGS: 00000293
RAX: ffffffff813765bf RBX: ffffffff895ab651 RCX: ffff888028c5da00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90004baf090 R08: ffffffff814125c5 R09: ffffffff814120bf
R10: 0000000000000003 R11: ffff888028c5da00 R12: ffff888028c5da00
R13: ffffffff817f7110 R14: ffffc90004baf0e0 R15: ffffc90004baf000
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:4158 [inline]
 __kmalloc_node_track_caller_noprof+0x225/0x440 mm/slub.c:4177
 kmalloc_reserve+0x111/0x2a0 net/core/skbuff.c:605
 __alloc_skb+0x1f3/0x440 net/core/skbuff.c:674
 alloc_skb include/linux/skbuff.h:1320 [inline]
 nlmsg_new include/net/netlink.h:1015 [inline]
 rtmsg_ifinfo_build_skb+0x84/0x260 net/core/rtnetlink.c:4157
 rtmsg_ifinfo_event net/core/rtnetlink.c:4200 [inline]
 rtmsg_ifinfo+0x91/0x1b0 net/core/rtnetlink.c:4209
 dev_close_many+0x2e1/0x4c0 net/core/dev.c:1586
 unregister_netdevice_many_notify+0x537/0x1d20 net/core/dev.c:11318
 unregister_netdevice_many net/core/dev.c:11405 [inline]
 default_device_exit_batch+0xa0f/0xa90 net/core/dev.c:11888
 ops_exit_list net/core/net_namespace.c:178 [inline]
 cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 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
 </TASK>
DEBUG: waiting rtnl_mutex for 11478 jiffies.
task:syz-executor    state:D stack:25840 pid:18211 tgid:18211 ppid:18187  flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 rtnl_lock net/core/rtnetlink.c:149 [inline]
 rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x7f0/0x990 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 __sys_sendto+0x3a4/0x4f0 net/socket.c:2204
 __do_sys_sendto net/socket.c:2216 [inline]
 __se_sys_sendto net/socket.c:2212 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2212
 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: 0033:0x7f649637796c
RSP: 002b:00007ffc95c14b40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f6497034620 RCX: 00007f649637796c
RDX: 000000000000002c RSI: 00007f6497034670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffc95c14b94 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f6497034670 R15: 0000000000000000
 </TASK>
DEBUG: waiting rtnl_mutex for 11479 jiffies.
task:kworker/1:2     state:D stack:21896 pid:1802  tgid:1802  ppid:2      flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 linkwatch_event+0xe/0x60 net/core/link_watch.c:276
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 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
 </TASK>
INFO: lockdep is turned off.