Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 6567 Comm: kworker/u8:14 Not tainted 6.14.0-rc4-syzkaller-00278-gece144f151ac #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: netns cleanup_net
RIP: 0010:dst_dev_put+0x27/0x290 net/core/dst.c:146
Code: 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 49 89 fd 49 bf 00 00 00 00 00 fc ff df e8 f0 29 f3 f7 4d 89 ec 49 c1 ec 03 <43> 80 3c 3c 00 74 08 4c 89 ef e8 2a 65 5a f8 4d 8b 75 00 49 8d 7d
RSP: 0018:ffffc90000007af8 EFLAGS: 00010256
RAX: ffffffff89ce9530 RBX: 0000000000000003 RCX: ffff888030bebc00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 1ffffffff1caa24a R08: ffffffff8a777ef9 R09: 1ffff1100ee520c0
R10: dffffc0000000000 R11: ffffed100ee520c1 R12: 0000000000000000
R13: 0000000000000003 R14: 00000000fffffff8 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fe16ff8 CR3: 000000005a4f8000 CR4: 0000000000350ef0
Call Trace:
rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:201 [inline]
fib_nh_common_release+0x1fc/0x420 net/ipv4/fib_semantics.c:212
fib_nh_release net/ipv4/fib_semantics.c:224 [inline]
free_fib_info_rcu+0xdc/0x4a0 net/ipv4/fib_semantics.c:236
rcu_do_batch kernel/rcu/tree.c:2546 [inline]
rcu_core+0xaac/0x17a0 kernel/rcu/tree.c:2802
handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:preempt_schedule_irq+0xf6/0x1c0 kernel/sched/core.c:7087
Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 8b 00 00 00 bf 01 00 00 00 e8 c5 de 85 f5 e8 80 09 c0 f5 fb bf 01 00 00 00 25 ab ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 95 78 1f f6 48
RSP: 0018:ffffc90005617420 EFLAGS: 00000282
RAX: 7200503c38fde700 RBX: 1ffff92000ac2e8c RCX: ffffffff819d2afa
RDX: dffffc0000000000 RSI: ffffffff8c2aa4a0 RDI: 0000000000000001
RBP: ffffc900056174e0 R08: ffffffff9454984f R09: 1ffffffff28a9309
R10: dffffc0000000000 R11: fffffbfff28a930a R12: 1ffff92000ac2e84
R13: 1ffff92000ac2e88 R14: ffffc90005617440 R15: dffffc0000000000
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lockdep_unregister_key+0x56d/0x610 kernel/locking/lockdep.c:6595
Code: 4f 94 48 c7 c6 30 09 9d 81 e8 2f 31 0a 00 e8 fa 3b 0a 00 e9 e5 fb ff ff e8 d0 55 6b 0a 41 f7 c7 00 02 00 00 74 d0 fb 45 84 f6 <75> cf eb e0 90 0f 0b 90 45 31 f6 e9 62 ff ff ff 90 0f 0b 90 e9 a1
RSP: 0018:ffffc900056175a0 EFLAGS: 00000202
RAX: dffffc0000000000 RBX: 1ffff92000ac2ebc RCX: ffffffff9a650903
RDX: 0000000000000001 RSI: ffffffff8c2ab240 RDI: ffffffff8c80f060
RBP: ffffc90005617678 R08: ffffffff944fb69f R09: 1ffffffff289f6d3
R10: dffffc0000000000 R11: fffffbfff289f6d4 R12: ffffc900056175e0
R13: 1ffff92000ac2eb8 R14: ffff8880675ac201 R15: 0000000000000213
__qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1080
qdisc_put net/sched/sch_generic.c:1106 [inline]
dev_shutdown+0x357/0x450 net/sched/sch_generic.c:1494
unregister_netdevice_many_notify+0xada/0x1f10 net/core/dev.c:11873
unregister_netdevice_many net/core/dev.c:11948 [inline]
default_device_exit_batch+0x7ff/0x880 net/core/dev.c:12431
ops_exit_list net/core/net_namespace.c:177 [inline]
cleanup_net+0x8af/0xd60 net/core/net_namespace.c:652
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac0/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd30 kernel/workqueue.c:3400
kthread+0x7ab/0x920 kernel/kthread.c:464
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dst_dev_put+0x27/0x290 net/core/dst.c:146
Code: 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 49 89 fd 49 bf 00 00 00 00 00 fc ff df e8 f0 29 f3 f7 4d 89 ec 49 c1 ec 03 <43> 80 3c 3c 00 74 08 4c 89 ef e8 2a 65 5a f8 4d 8b 75 00 49 8d 7d
RSP: 0018:ffffc90000007af8 EFLAGS: 00010256
RAX: ffffffff89ce9530 RBX: 0000000000000003 RCX: ffff888030bebc00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 1ffffffff1caa24a R08: ffffffff8a777ef9 R09: 1ffff1100ee520c0
R10: dffffc0000000000 R11: ffffed100ee520c1 R12: 0000000000000000
R13: 0000000000000003 R14: 00000000fffffff8 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fe16ff8 CR3: 000000005a4f8000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
0: 90 nop
1: 90 nop
2: 90 nop
3: f3 0f 1e fa endbr64
7: 55 push %rbp
8: 41 57 push %r15
a: 41 56 push %r14
c: 41 55 push %r13
e: 41 54 push %r12
10: 53 push %rbx
11: 49 89 fd mov %rdi,%r13
14: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15
1b: fc ff df
1e: e8 f0 29 f3 f7 call 0xf7f32a13
23: 4d 89 ec mov %r13,%r12
26: 49 c1 ec 03 shr $0x3,%r12
* 2a: 43 80 3c 3c 00 cmpb $0x0,(%r12,%r15,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 ef mov %r13,%rdi
34: e8 2a 65 5a f8 call 0xf85a6563
39: 4d 8b 75 00 mov 0x0(%r13),%r14
3d: 49 rex.WB
3e: 8d .byte 0x8d
3f: 7d .byte 0x7d