bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): Released all slaves Oops: general protection fault, probably for non-canonical address 0xdffffc0000000012: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000090-0x0000000000000097] CPU: 0 UID: 0 PID: 1033 Comm: kworker/u4:5 Not tainted 6.15.0-rc6-syzkaller-00278-g172a9d94339c #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: netns cleanup_net RIP: 0010:__fib6_drop_pcpu_from+0x1f0/0x3b0 net/ipv6/ip6_fib.c:980 Code: 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ef e8 47 ad 10 f8 49 8b 6d 00 48 85 ed 74 2f 48 81 c5 90 00 00 00 48 89 e8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 ef e8 21 ad 10 f8 48 8b 45 00 48 3b 44 RSP: 0000:ffffc900025c6c48 EFLAGS: 00010206 RAX: 0000000000000012 RBX: ffffffff8d971c20 RCX: ffff888034f20000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000091 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff8a113c76 R12: 0000000000000000 R13: ffffe8ffffc4ebf0 R14: dffffc0000000000 R15: ffff88804ff78110 FS: 0000000000000000(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4124ca5c5c CR3: 0000000059e04000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: fib6_drop_pcpu_from net/ipv6/ip6_fib.c:1024 [inline] fib6_purge_rt+0x143/0x830 net/ipv6/ip6_fib.c:1035 fib6_del_route net/ipv6/ip6_fib.c:1995 [inline] fib6_del+0xee1/0x1550 net/ipv6/ip6_fib.c:2040 fib6_clean_node+0x29f/0x590 net/ipv6/ip6_fib.c:2202 fib6_walk_continue+0x67b/0x910 net/ipv6/ip6_fib.c:2124 fib6_walk+0x149/0x290 net/ipv6/ip6_fib.c:2172 fib6_clean_tree net/ipv6/ip6_fib.c:2252 [inline] __fib6_clean_all+0x234/0x380 net/ipv6/ip6_fib.c:2268 rt6_sync_down_dev net/ipv6/route.c:4951 [inline] rt6_disable_ip+0x120/0x720 net/ipv6/route.c:4956 addrconf_ifdown+0x15d/0x1880 net/ipv6/addrconf.c:3857 addrconf_notify+0x1bc/0x1010 net/ipv6/addrconf.c:-1 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2214 [inline] call_netdevice_notifiers net/core/dev.c:2228 [inline] dev_close_many+0x29c/0x410 net/core/dev.c:1731 netif_close+0x158/0x210 net/core/dev.c:1744 dev_close+0x10a/0x220 net/core/dev_api.c:219 cfg80211_shutdown_all_interfaces+0xbb/0x1d0 net/wireless/core.c:277 ieee80211_remove_interfaces+0x109/0x6d0 net/mac80211/iface.c:2292 ieee80211_unregister_hw+0x5d/0x2c0 net/mac80211/main.c:1683 mac80211_hwsim_del_radio+0x275/0x460 drivers/net/wireless/virtual/mac80211_hwsim.c:5665 hwsim_exit_net+0x584/0x640 drivers/net/wireless/virtual/mac80211_hwsim.c:6545 ops_exit_list net/core/net_namespace.c:172 [inline] cleanup_net+0x717/0xbd0 net/core/net_namespace.c:654 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xade/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x711/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__fib6_drop_pcpu_from+0x1f0/0x3b0 net/ipv6/ip6_fib.c:980 Code: 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ef e8 47 ad 10 f8 49 8b 6d 00 48 85 ed 74 2f 48 81 c5 90 00 00 00 48 89 e8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 ef e8 21 ad 10 f8 48 8b 45 00 48 3b 44 RSP: 0000:ffffc900025c6c48 EFLAGS: 00010206 RAX: 0000000000000012 RBX: ffffffff8d971c20 RCX: ffff888034f20000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000091 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff8a113c76 R12: 0000000000000000 R13: ffffe8ffffc4ebf0 R14: dffffc0000000000 R15: ffff88804ff78110 FS: 0000000000000000(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4124ca5c5c CR3: 0000000059e04000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 c1 e8 03 shr $0x3,%rax 4: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) 9: 74 08 je 0x13 b: 4c 89 ef mov %r13,%rdi e: e8 47 ad 10 f8 call 0xf810ad5a 13: 49 8b 6d 00 mov 0x0(%r13),%rbp 17: 48 85 ed test %rbp,%rbp 1a: 74 2f je 0x4b 1c: 48 81 c5 90 00 00 00 add $0x90,%rbp 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 ef mov %rbp,%rdi 34: e8 21 ad 10 f8 call 0xf810ad5a 39: 48 8b 45 00 mov 0x0(%rbp),%rax 3d: 48 rex.W 3e: 3b .byte 0x3b 3f: 44 rex.R