------------[ cut here ]------------ WARNING: CPU: 0 PID: 11544 at net/ipv4/ipmr.c:440 ipmr_rules_exit+0x13a/0x1c0 Modules linked in: CPU: 0 UID: 0 PID: 11544 Comm: syz-executor.6 Not tainted 6.13.0-rc3-next-20241220 #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 5c 80 a3 00 e8 47 df 6a fd 90 <0f> 0b 90 eb 93 e8 3c df 6a fd 0f b6 2d 1d 26 36 02 31 ff 89 ee e8 RSP: 0018:ffff88803ec37c20 EFLAGS: 00010216 RAX: 0000000000019d96 RBX: ffff888015c1dc00 RCX: ffffc90008823000 RDX: 0000000000040000 RSI: ffffffff8406ea09 RDI: 0000000000000005 RBP: ffff88803a526000 R08: 0000000000000000 R09: ffffed1002b83ba9 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001 R13: ffff888015c1e400 R14: ffff888015c1dc00 R15: fffffbfff0c51178 FS: 00007f028eacb700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f84bb5cd544 CR3: 0000000032da8000 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+0x2e3/0x700 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: 0033:0x7f0291555b19 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:00007f028eacb188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f0291668f60 RCX: 00007f0291555b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000048040080 RBP: 00007f02915aff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff76e5919f R14: 00007f028eacb300 R15: 0000000000022000 </TASK> irq event stamp: 16251 hardirqs last enabled at (16261): [<ffffffff81528b38>] __up_console_sem+0x78/0x80 hardirqs last disabled at (16272): [<ffffffff81528b1d>] __up_console_sem+0x5d/0x80 softirqs last enabled at (16162): [<ffffffff813a9e4c>] handle_softirqs+0x50c/0x770 softirqs last disabled at (15935): [<ffffffff813aa1e4>] __irq_exit_rcu+0xc4/0x100 ---[ end trace 0000000000000000 ]--- program syz-executor.3 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO loop4: detected capacity change from 0 to 5 EXT4-fs (loop4): VFS: Can't find ext4 filesystem program syz-executor.4 is using a deprecated SCSI ioctl, please convert it to SG_IO loop4: detected capacity change from 0 to 5 EXT4-fs (loop4): VFS: Can't find ext4 filesystem program syz-executor.3 is using a deprecated SCSI ioctl, please convert it to SG_IO loop7: detected capacity change from 0 to 512 EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. syz-executor.4: attempt to access beyond end of device loop4: rw=0, sector=0, nr_sectors = 1 limit=0 loop6: detected capacity change from 0 to 184 FAT-fs (loop4): unable to read boot sector syz-executor.4: attempt to access beyond end of device loop4: rw=0, sector=0, nr_sectors = 1 limit=0 FAT-fs (loop4): unable to read boot sector EXT4-fs (loop7): unmounting filesystem 00000000-0000-0000-0000-000000000000.