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: 1 PID: 8499 Comm: syz-executor5 Not tainted 4.19.0+ #312 audit: type=1400 audit(1540996169.357:35): apparmor="DENIED" operation="change_onexec" info="label not found" error=-2 profile="unconfined" name="&&" pid=8495 comm="syz-executor2" Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:memcmp+0x28/0x160 lib/string.c:857 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 IPVS: ftp: loaded support on port[0] = 21 RSP: 0018:ffff88018b28ef98 EFLAGS: 00010292 RAX: dffffc0000000000 RBX: 1ffff10031651e4f RCX: 03fffe20062ca3c9 RDX: 0000000000000002 RSI: ffffffff885bafe0 RDI: 1ffff10031651e4f RBP: ffff88018b28efc0 R08: ffff88018b286300 R09: ffffed003b5e5b67 R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: 0000000000000002 R13: ffffffff885bafe0 R14: 1fff7901bc8e119f R15: dffffc0000000000 FS: 00007f9170593700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 kobject: 'loop2' (000000001516399f): kobject_uevent_env CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'loop2' (000000001516399f): fill_kobj_path: path = '/devices/virtual/block/loop2' CR2: 000000000070c1b4 CR3: 00000001b77c1000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: strnstr+0x4b/0x70 lib/string.c:935 __aa_lookupn_ns+0xc1/0x570 security/apparmor/policy_ns.c:209 kobject: 'lo' (00000000a387e490): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'lo' (00000000a387e490): kobject_uevent_env kobject: 'lo' (00000000a387e490): fill_kobj_path: path = '/devices/virtual/net/lo' kobject: 'queues' (00000000e10bb90a): kobject_add_internal: parent: 'lo', set: '' aa_lookupn_ns+0x88/0x1e0 security/apparmor/policy_ns.c:240 aa_fqlookupn_profile+0x1b9/0x1010 security/apparmor/policy.c:468 kobject: 'queues' (00000000e10bb90a): kobject_uevent_env kobject: 'queues' (00000000e10bb90a): kobject_uevent_env: filter function caused the event to drop! fqlookupn_profile+0x80/0xc0 security/apparmor/label.c:1844 kobject: 'rx-0' (00000000a954806d): kobject_add_internal: parent: 'queues', set: 'queues' aa_label_strn_parse+0xa3a/0x1230 security/apparmor/label.c:1908 kobject: 'rx-0' (00000000a954806d): kobject_uevent_env kobject: 'rx-0' (00000000a954806d): fill_kobj_path: path = '/devices/virtual/net/lo/queues/rx-0' aa_label_parse+0x42/0x50 security/apparmor/label.c:1943 aa_change_profile+0x513/0x3260 security/apparmor/domain.c:1362 kobject: 'tx-0' (000000006d2d7630): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (000000006d2d7630): kobject_uevent_env kobject: 'tx-0' (000000006d2d7630): fill_kobj_path: path = '/devices/virtual/net/lo/queues/tx-0' kobject: 'tunl0' (00000000826fdc71): kobject_add_internal: parent: 'net', set: 'devices' apparmor_setprocattr+0xa8b/0x1150 security/apparmor/lsm.c:656 kobject: 'tunl0' (00000000826fdc71): kobject_uevent_env security_setprocattr+0x66/0xc0 security/security.c:1309 proc_pid_attr_write+0x301/0x540 fs/proc/base.c:2569 kobject: 'tunl0' (00000000826fdc71): fill_kobj_path: path = '/devices/virtual/net/tunl0' __vfs_write+0x119/0x9f0 fs/read_write.c:485 kobject: 'queues' (00000000838e58c0): kobject_add_internal: parent: 'tunl0', set: '' vfs_write+0x1fc/0x560 fs/read_write.c:549 ksys_write+0x101/0x260 fs/read_write.c:598 kobject: 'queues' (00000000838e58c0): kobject_uevent_env __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: 'queues' (00000000838e58c0): kobject_uevent_env: filter function caused the event to drop! do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 kobject: 'rx-0' (0000000075fad149): kobject_add_internal: parent: 'queues', set: 'queues' entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9170592c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000000008 RSI: 0000000020000000 RDI: 0000000000000005 kobject: 'rx-0' (0000000075fad149): kobject_uevent_env RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f91705936d4 R13: 00000000004c5772 R14: 00000000004d9328 R15: 00000000ffffffff Modules linked in: ---[ end trace e5d30e3dfc63046a ]--- kobject: 'loop3' (0000000075b5118c): kobject_uevent_env RIP: 0010:memcmp+0x28/0x160 lib/string.c:857 kobject: 'loop3' (0000000075b5118c): fill_kobj_path: path = '/devices/virtual/block/loop3' 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 kobject: 'loop1' (00000000f79a2676): kobject_uevent_env RSP: 0018:ffff88018b28ef98 EFLAGS: 00010292 kobject: 'loop1' (00000000f79a2676): fill_kobj_path: path = '/devices/virtual/block/loop1' RAX: dffffc0000000000 RBX: 1ffff10031651e4f RCX: 03fffe20062ca3c9 kobject: 'loop1' (00000000f79a2676): kobject_uevent_env kobject: 'rx-0' (0000000075fad149): fill_kobj_path: path = '/devices/virtual/net/tunl0/queues/rx-0' kobject: 'loop1' (00000000f79a2676): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'tx-0' (0000000070323521): kobject_add_internal: parent: 'queues', set: 'queues' RDX: 0000000000000002 RSI: ffffffff885bafe0 RDI: 1ffff10031651e4f kobject: 'tx-0' (0000000070323521): kobject_uevent_env RBP: ffff88018b28efc0 R08: ffff88018b286300 R09: ffffed003b5e5b67 kobject: 'tx-0' (0000000070323521): fill_kobj_path: path = '/devices/virtual/net/tunl0/queues/tx-0' audit: type=1400 audit(1540996169.957:36): apparmor="DENIED" operation="change_onexec" info="label not found" error=-2 profile="unconfined" name="&=" pid=8509 comm="syz-executor2" kobject: 'gre0' (00000000f72e6f59): kobject_add_internal: parent: 'net', set: 'devices' R10: ffffed003b5e5b67 R11: ffff8801daf2db3b R12: 0000000000000002 kobject: 'gre0' (00000000f72e6f59): kobject_uevent_env kobject: 'loop2' (000000001516399f): kobject_uevent_env kobject: 'gre0' (00000000f72e6f59): fill_kobj_path: path = '/devices/virtual/net/gre0' kobject: 'loop2' (000000001516399f): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'queues' (0000000081789c46): kobject_add_internal: parent: 'gre0', set: '' R13: ffffffff885bafe0 R14: 1fff7901bc8e119f R15: dffffc0000000000 kobject: 'queues' (0000000081789c46): kobject_uevent_env FS: 00007f9170593700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 kobject: 'queues' (0000000081789c46): kobject_uevent_env: filter function caused the event to drop! kobject: 'loop0' (00000000fcb59105): kobject_uevent_env kobject: 'rx-0' (000000003d17893a): kobject_add_internal: parent: 'queues', set: 'queues' CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'rx-0' (000000003d17893a): kobject_uevent_env CR2: 0000000000707158 CR3: 00000001b77c1000 CR4: 00000000001406f0 kobject: 'rx-0' (000000003d17893a): fill_kobj_path: path = '/devices/virtual/net/gre0/queues/rx-0' kobject: 'loop0' (00000000fcb59105): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'tx-0' (00000000175576b0): kobject_add_internal: parent: 'queues', set: 'queues' DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'tx-0' (00000000175576b0): kobject_uevent_env DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400