capability: warning: `syz-executor4' uses 32-bit capabilities (legacy support in use)
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 7945 Comm: syz-executor2 Not tainted 4.19.0-rc5+ #251
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:memcmp+0x28/0x160 lib/string.c:856
Code: 00 00 48 85 d2 0f 84 0a 01 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 f9 48 89 e5 48 c1 e9 03 41 54 53 48 89 fb 48 83 ec 18 <0f> b6 04 01 48 89 f9 83 e1 07 38 c8 7f 08 84 c0 0f 85 98 00 00 00
RSP: 0018:ffff880196f2ef98 EFLAGS: 00010292
RAX: dffffc0000000000 RBX: 0000000600000007 RCX: 00000000c0000000
RDX: 0000000000000002 RSI: ffffffff883f7980 RDI: 0000000600000007
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
RBP: ffff880196f2efc0 R08: ffff8801d862c4c0 R09: ffffed003b5a4732
R10: ffffed003b5a4732 R11: ffff8801dad23993 R12: 0000000000000002
R13: ffffffff883f7980 R14: ffff880796f2f357 R15: dffffc0000000000
FS: 00007f7dba384700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000072c028 CR3: 00000001bcd34000 CR4: 00000000001406f0
Call Trace:
strnstr+0x4b/0x70 lib/string.c:934
__aa_lookupn_ns+0xc1/0x570 security/apparmor/policy_ns.c:209
kobject: 'lo' (000000002534be27): kobject_add_internal: parent: 'net', set: 'devices'
aa_lookupn_ns+0x88/0x1e0 security/apparmor/policy_ns.c:240
aa_fqlookupn_profile+0x1b9/0x1010 security/apparmor/policy.c:468
kobject: 'lo' (000000002534be27): kobject_uevent_env
kobject: 'lo' (000000002534be27): fill_kobj_path: path = '/devices/virtual/net/lo'
fqlookupn_profile+0x80/0xc0 security/apparmor/label.c:1844
aa_label_strn_parse+0xa3a/0x1230 security/apparmor/label.c:1908
kobject: 'queues' (00000000a88764f1): kobject_add_internal: parent: 'lo', set: '<NULL>'
kobject: 'queues' (00000000a88764f1): kobject_uevent_env
kobject: 'queues' (00000000a88764f1): kobject_uevent_env: filter function caused the event to drop!
aa_label_parse+0x42/0x50 security/apparmor/label.c:1943
aa_change_profile+0x513/0x3510 security/apparmor/domain.c:1362
kobject: 'rx-0' (00000000c07b4616): kobject_add_internal: parent: 'queues', set: 'queues'
kobject: 'rx-0' (00000000c07b4616): kobject_uevent_env
kobject: 'rx-0' (00000000c07b4616): fill_kobj_path: path = '/devices/virtual/net/lo/queues/rx-0'
apparmor_setprocattr+0xaa4/0x1150 security/apparmor/lsm.c:658
security_setprocattr+0x66/0xc0 security/security.c:1298
kobject: 'tx-0' (00000000fbd0d295): kobject_add_internal: parent: 'queues', set: 'queues'
proc_pid_attr_write+0x301/0x540 fs/proc/base.c:2555
__vfs_write+0x119/0x9f0 fs/read_write.c:485
kobject: 'tx-0' (00000000fbd0d295): kobject_uevent_env
kobject: 'tx-0' (00000000fbd0d295): fill_kobj_path: path = '/devices/virtual/net/lo/queues/tx-0'
vfs_write+0x1fc/0x560 fs/read_write.c:549
ksys_write+0x101/0x260 fs/read_write.c:598
__do_sys_write fs/read_write.c:610 [inline]
__se_sys_write fs/read_write.c:607 [inline]
__x64_sys_write+0x73/0xb0 fs/read_write.c:607
kobject: 'erspan0' (00000000d5995368): kobject_cleanup, parent (null)
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
kobject: 'erspan0' (00000000d5995368): auto cleanup 'remove' event
kobject: 'tunl0' (000000005c4f8f15): kobject_add_internal: parent: 'net', set: 'devices'
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457679
kobject: 'tunl0' (000000005c4f8f15): kobject_uevent_env
Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f7dba383c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7dba3846d4 RCX: 0000000000457679
RDX: 0000000000000009 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d8f38 R14: 00000000004c55ed R15: 0000000000000001
Modules linked in:
---[ end trace f47c94d2336c8867 ]---
syz-executor1 (7912) used greatest stack depth: 13104 bytes left
kobject: 'erspan0' (00000000d5995368): kobject_uevent_env
kobject: 'tunl0' (000000005c4f8f15): fill_kobj_path: path = '/devices/virtual/net/tunl0'
kobject: 'erspan0' (00000000d5995368): kobject_uevent_env: uevent_suppress caused the event to drop!
kobject: 'queues' (00000000f00947d2): kobject_add_internal: parent: 'tunl0', set: '<NULL>'
RIP: 0010:memcmp+0x28/0x160 lib/string.c:856
Code: 00 00 48 85 d2 0f 84 0a 01 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 f9 48 89 e5 48 c1 e9 03 41 54 53 48 89 fb 48 83 ec 18 <0f> b6 04 01 48 89 f9 83 e1 07 38 c8 7f 08 84 c0 0f 85 98 00 00 00
RSP: 0018:ffff880196f2ef98 EFLAGS: 00010292
RAX: dffffc0000000000 RBX: 0000000600000007 RCX: 00000000c0000000
RDX: 0000000000000002 RSI: ffffffff883f7980 RDI: 0000000600000007
RBP: ffff880196f2efc0 R08: ffff8801d862c4c0 R09: ffffed003b5a4732
R10: ffffed003b5a4732 R11: ffff8801dad23993 R12: 0000000000000002
R13: ffffffff883f7980 R14: ffff880796f2f357 R15: dffffc0000000000
FS: 00007f7dba384700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000072c028 CR3: 00000001bcd34000 CR4: 00000000001406f0