------------[ cut here ]------------
WARNING: CPU: 0 PID: 21423 at net/ipv4/ipmr.c:440 ipmr_rules_exit+0x13a/0x1c0
Modules linked in:
CPU: 0 UID: 0 PID: 21423 Comm: syz-executor.0 Not tainted 6.13.0-rc2-next-20241210 #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 4c 6e a3 00 e8 87 bc 6d fd 90 <0f> 0b 90 eb 93 e8 7c bc 6d fd 0f b6 2d de d7 38 02 31 ff 89 ee e8
RSP: 0018:ffff888041307c20 EFLAGS: 00010212
RAX: 000000000001805c RBX: ffff88803016c500 RCX: ffffc9000681f000
RDX: 0000000000040000 RSI: ffffffff84042899 RDI: 0000000000000005
RBP: ffff888032d40000 R08: 0000000000000000 R09: ffffed100602d8c9
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: ffff88803016cd00 R14: ffff88803016c500 R15: fffffbfff0c50f80
FS: 00007f974ac42700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557a7393bc CR3: 00000000415c6000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
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: 0033:0x7f974d6edb19
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:00007f974ac42188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f974d801020 RCX: 00007f974d6edb19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000048040080
RBP: 00007f974d747f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc4cb9023f R14: 00007f974ac42300 R15: 0000000000022000
irq event stamp: 7967
hardirqs last enabled at (7977): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (7988): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (7322): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (6883): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
process 'syz-executor.6' launched './file1' with NULL argv: empty string added
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'.
loop6: detected capacity change from 0 to 6
FAT-fs (loop6): Directory bread(block 6) failed
FAT-fs (loop6): Directory bread(block 6) failed
program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO
program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO
program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO
mac80211_hwsim hwsim17 wlan1: entered promiscuous mode
mac80211_hwsim hwsim17 wlan1: left promiscuous mode
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
program syz-executor.2 is using a deprecated SCSI ioctl, please convert it to SG_IO
audit: type=1400 audit(2000000171.935:26): avc: denied { tracepoint } for pid=21807 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1
Zero length message leads to an empty skb
loop4: detected capacity change from 0 to 512
EXT4-fs (loop4): mounting ext2 file system using the ext4 subsystem
EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000.
loop4: detected capacity change from 0 to 512
EXT4-fs (loop4): mounting ext2 file system using the ext4 subsystem
EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000.
loop4: detected capacity change from 0 to 512
EXT4-fs (loop4): mounting ext2 file system using the ext4 subsystem
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.0'.
EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.0'.
EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000.
loop4: detected capacity change from 0 to 512
EXT4-fs (loop4): mounting ext2 file system using the ext4 subsystem
EXT4-fs (loop4): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000.
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.0'.
SELinux: Context unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 is not valid (left unmapped).
lo: entered promiscuous mode
lo: entered allmulticast mode
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.0'.
Bluetooth: MGMT ver 1.23
audit: type=1400 audit(2000000174.827:27): avc: denied { execmod } for pid=22026 comm="syz-executor.6" path="/syzkaller-testdir300643500/syzkaller.Is33ie/305/file1" dev="sda" ino=16041 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=file permissive=1
netlink: 'syz-executor.4': attribute type 7 has an invalid length.