Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 5187 Comm: udevd Not tainted 6.15.0-rc7-syzkaller-00082-g5cdb2c77c4c3 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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 48 89 fb 49 bc 00 00 00 00 00 fc ff df e8 30 5f 82 f8 49 89 dd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 48 89 df e8 99 34 e2 f8 4c 8b 33 48 8d 7b
RSP: 0018:ffffc90000a08b38 EFLAGS: 00010246
RAX: ffffffff893d91b0 RBX: 0000000000000003 RCX: ffff88807c7c8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 1ffffffff1b2ba66 R08: ffff88804971460b R09: 1ffff110092e28c1
R10: dffffc0000000000 R11: ffffed10092e28c2 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000607ed9b5fad0 R15: 0000000000000001
FS: 00007f2dd2775880(0000) GS:ffff8881261f6000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2dd2774000 CR3: 000000007c656000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:195 [inline]
fib_nh_common_release+0x1ed/0x420 net/ipv4/fib_semantics.c:206
fib6_info_destroy_rcu+0xc1/0x1b0 net/ipv6/ip6_fib.c:177
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xca5/0x1710 kernel/rcu/tree.c:2824
handle_softirqs+0x283/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
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:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5870
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 6b 60 d4 10 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc900034f7858 EFLAGS: 00000206
RAX: ca278638c1a8bf00 RBX: 0000000000000000 RCX: ca278638c1a8bf00
RDX: 0000000000000001 RSI: ffffffff8d924775 RDI: ffffffff8bc120c0
RBP: ffffffff8171ca05 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8171ca05 R12: 0000000000000002
R13: ffffffff8df3dee0 R14: 0000000000000000 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x62/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2380 [inline]
slab_free mm/slub.c:4642 [inline]
kmem_cache_free+0x192/0x3f0 mm/slub.c:4744
do_sys_openat2+0x154/0x1c0 fs/open.c:1437
do_sys_open fs/open.c:1444 [inline]
__do_sys_openat fs/open.c:1460 [inline]
__se_sys_openat fs/open.c:1455 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1455
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2dd2115c3a
Code: 41 89 f2 48 89 54 24 e0 41 83 e2 40 75 2a 89 f0 f7 d0 a9 00 00 41 00 74 1f 89 f2 b8 01 01 00 00 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 77 2e c3 0f 1f 44 00 00 48 8d 44 24 08 c7 44 24
RSP: 002b:00007ffea63defe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055f0d911ca00 RCX: 00007f2dd2115c3a
RDX: 0000000000090800 RSI: 000055f0d90563c0 RDI: 00000000ffffff9c
RBP: 000055f0d90563c0 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000206 R12: 000055f0d905e780
R13: 00000000000000ff R14: 000055f0d7a00be0 R15: 00007ffea63df270
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 48 89 fb 49 bc 00 00 00 00 00 fc ff df e8 30 5f 82 f8 49 89 dd 49 c1 ed 03 <43> 80 7c 25 00 00 74 08 48 89 df e8 99 34 e2 f8 4c 8b 33 48 8d 7b
RSP: 0018:ffffc90000a08b38 EFLAGS: 00010246
RAX: ffffffff893d91b0 RBX: 0000000000000003 RCX: ffff88807c7c8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 1ffffffff1b2ba66 R08: ffff88804971460b R09: 1ffff110092e28c1
R10: dffffc0000000000 R11: ffffed10092e28c2 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000607ed9b5fad0 R15: 0000000000000001
FS: 00007f2dd2775880(0000) GS:ffff8881261f6000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2dd2774000 CR3: 000000007c656000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
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: 48 89 fb mov %rdi,%rbx
14: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12
1b: fc ff df
1e: e8 30 5f 82 f8 call 0xf8825f53
23: 49 89 dd mov %rbx,%r13
26: 49 c1 ed 03 shr $0x3,%r13
* 2a: 43 80 7c 25 00 00 cmpb $0x0,0x0(%r13,%r12,1) <-- trapping instruction
30: 74 08 je 0x3a
32: 48 89 df mov %rbx,%rdi
35: e8 99 34 e2 f8 call 0xf8e234d3
3a: 4c 8b 33 mov (%rbx),%r14
3d: 48 rex.W
3e: 8d .byte 0x8d
3f: 7b .byte 0x7b