------------[ cut here ]------------
WARNING: CPU: 0 PID: 7574 at net/ipv4/ipmr.c:440 ipmr_rules_exit+0x13a/0x1c0
Modules linked in:
CPU: 0 UID: 0 PID: 7574 Comm: syz-executor.5 Not tainted 6.13.0-rc1-next-20241203 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:ipmr_rules_exit+0x13a/0x1c0
Code: ff df 48 c1 ea 03 80 3c 02 00 75 7d 48 c7 83 00 08 00 00 00 00 00 00 5b 5d 41 5c 41 5d 41 5e e9 ac 13 a3 00 e8 97 fd 6d fd 90 <0f> 0b 90 eb 93 e8 8c fd 6d fd 0f b6 2d 57 10 59 02 31 ff 89 ee e8
RSP: 0018:ffff88804098fc20 EFLAGS: 00010206
RAX: 0000000000019e70 RBX: ffff88803e935c00 RCX: ffffc9000a429000
RDX: 0000000000040000 RSI: ffffffff83e3e2b9 RDI: 0000000000000005
RBP: ffff88800ea5c000 R08: 0000000000000000 R09: ffffed1007d26ba8
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: ffff88803e936400 R14: ffff88803e935c00 R15: fffffbfff0c50e80
FS:  00007f5f63896700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f185c82f543 CR3: 0000000040a7e000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 ipmr_net_exit_batch+0x53/0xa0
 ops_exit_list+0x12b/0x180
 setup_net+0x492/0x7a0
 copy_net_ns+0x2e3/0x6f0
 create_new_namespaces+0x3f6/0xaf0
 unshare_nsproxy_namespaces+0xc0/0x200
 ksys_unshare+0x46a/0xa10
 __x64_sys_unshare+0x31/0x40
 do_syscall_64+0xbf/0x1d0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5f66341b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5f63896188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f5f66455020 RCX: 00007f5f66341b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000048040080
RBP: 00007f5f6639bf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd6eb385af R14: 00007f5f63896300 R15: 0000000000022000
 </TASK>
irq event stamp: 8327
hardirqs last  enabled at (8337): [<ffffffff81327118>] __up_console_sem+0x78/0x80
hardirqs last disabled at (8348): [<ffffffff813270fd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (8054): [<ffffffff811a97ac>] handle_softirqs+0x50c/0x770
softirqs last disabled at (7823): [<ffffffff811a9b44>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
loop5: detected capacity change from 0 to 264