Unable to handle kernel paging request at virtual address 00000000ffff0000
Mem abort info:
ESR = 0x0000000096000005
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x05: level 1 translation fault
Data abort info:
ISV = 0, ISS = 0x00000005
CM = 0, WnR = 0
user pgtable: 4k pages, 48-bit VAs, pgdp=0000000117fe0000
[00000000ffff0000] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4604 Comm: kworker/u4:13 Not tainted 6.1.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: netns cleanup_net
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : mld_clear_delrec+0x37c/0x5f4 net/ipv6/mcast.c:834
lr : mld_clear_delrec+0x360/0x5f4 net/ipv6/mcast.c:834
sp : ffff800020f974f0
x29: ffff800020f974f0 x28: ffff800017a77000 x27: ffff0000f213a800
x26: dfff800000000000 x25: 0000000000000001 x24: ffff800017a77000
x23: 0000000000000001 x22: 00000000ffff0000 x21: ffff800013a8a760
x20: ffff800013a8a740 x19: ffff0000f3d3d000 x18: ffff800011aabce0
x17: 1fffe00033ed9d7e x16: ffff8000082d0ec4 x15: 0000000000000000
x14: 00000000ffff8000 x13: 1ffff00002a160b1 x12: 0000000000ff0100
x11: ff00800010804790 x10: 0000000000000000 x9 : ffff800010804790
x8 : 0000000000000000 x7 : ffff800008355a28 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000006 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
mld_clear_delrec+0x37c/0x5f4 net/ipv6/mcast.c:834
ipv6_mc_destroy_dev+0x50/0x508 net/ipv6/mcast.c:2799
addrconf_ifdown+0x1188/0x15dc net/ipv6/addrconf.c:3942
addrconf_notify+0x2f4/0xca8 net/ipv6/addrconf.c:-1
notifier_call_chain kernel/notifier.c:87 [inline]
raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:455
call_netdevice_notifiers_info net/core/dev.c:2001 [inline]
call_netdevice_notifiers_extack net/core/dev.c:2039 [inline]
call_netdevice_notifiers net/core/dev.c:2053 [inline]
unregister_netdevice_many+0xe2c/0x1740 net/core/dev.c:10978
ip_tunnel_delete_nets+0x2cc/0x320 net/ipv4/ip_tunnel.c:1171
ipgre_tap_exit_batch_net+0x30/0x40 net/ipv4/ip_gre.c:1705
ops_exit_list net/core/net_namespace.c:177 [inline]
cleanup_net+0x644/0xa74 net/core/net_namespace.c:640
process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439
kthread+0x250/0x2d8 kernel/kthread.c:376
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:849
Code: 387a6908 34000068 aa1603e0 960347cc (f84306d7)
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
0: 387a6908 ldrb w8, [x8, x26]
4: 34000068 cbz w8, 0x10
8: aa1603e0 mov x0, x22
c: 960347cc bl 0xfffffffff80d1f3c
* 10: f84306d7 ldr x23, [x22], #48 <-- trapping instruction