audit: type=1400 audit(1572418326.656:68): avc: denied { prog_run } for pid=8481 comm="syz-executor.1" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=bpf permissive=1 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: 8500 Comm: syz-executor.5 Not tainted 4.19.81 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__vunmap+0x68/0x400 mm/vmalloc.c:1512 Code: 85 e4 0f 85 de 02 00 00 e8 f5 2e d1 ff 4c 89 ef e8 cd 82 ff ff 48 ba 00 00 00 00 00 fc ff df 48 8d 78 48 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 50 03 00 00 4c 8b 60 48 4d 85 e4 0f 84 bd 02 00 RSP: 0018:ffff888051977310 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000009 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: 0000000000000048 RBP: ffff888051977350 R08: 1ffffffff110633c R09: fffffbfff110633d R10: fffffbfff110633c R11: ffffffff888319e3 R12: 0000000000000000 R13: ffffc90005a8b000 R14: ffffe8ffffc63720 R15: 0000607f51463720 FS: 00007fb7a4b6d700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33529000 CR3: 0000000091fe1000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfree+0x6a/0x100 mm/vmalloc.c:1597 ipcomp_free_scratches+0xc0/0x150 net/xfrm/xfrm_ipcomp.c:216 ipcomp_free_data net/xfrm/xfrm_ipcomp.c:325 [inline] ipcomp_init_state+0x76d/0xa10 net/xfrm/xfrm_ipcomp.c:377 ipcomp4_init_state+0xc5/0x830 net/ipv4/ipcomp.c:137 __xfrm_init_state+0x54f/0xef0 net/xfrm/xfrm_state.c:2312 xfrm_state_construct net/xfrm/xfrm_user.c:625 [inline] xfrm_add_sa+0x1f6c/0x351e net/xfrm/xfrm_user.c:682 xfrm_user_rcv_msg+0x450/0x720 net/xfrm/xfrm_user.c:2677 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 xfrm_netlink_rcv+0x70/0x90 net/xfrm/xfrm_user.c:2685 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x537/0x720 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459f49 Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb7a4b6cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459f49 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb7a4b6d6d4 R13: 00000000004c8360 R14: 00000000004de638 R15: 00000000ffffffff Modules linked in: kobject: 'loop1' (00000000af06c2cd): kobject_uevent_env kobject: 'loop1' (00000000af06c2cd): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (00000000af06c2cd): kobject_uevent_env kobject: 'kvm' (0000000080cd5491): kobject_uevent_env kobject: 'loop1' (00000000af06c2cd): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000000be55a00): kobject_uevent_env kobject: 'loop4' (000000000be55a00): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (0000000080cd5491): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (000000005c0eb380): kobject_uevent_env kobject: 'loop3' (000000005c0eb380): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (0000000080cd5491): kobject_uevent_env kobject: 'loop3' (000000005c0eb380): kobject_uevent_env kobject: 'loop3' (000000005c0eb380): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000005c0eb380): kobject_uevent_env kobject: 'kvm' (0000000080cd5491): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (000000005c0eb380): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (0000000080cd5491): kobject_uevent_env ---[ end trace fbcc6790218c90da ]--- kobject: 'loop2' (000000003e29d04c): kobject_uevent_env kobject: 'loop2' (000000003e29d04c): fill_kobj_path: path = '/devices/virtual/block/loop2' RIP: 0010:__vunmap+0x68/0x400 mm/vmalloc.c:1512 Code: 85 e4 0f 85 de 02 00 00 e8 f5 2e d1 ff 4c 89 ef e8 cd 82 ff ff 48 ba 00 00 00 00 00 fc ff df 48 8d 78 48 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 50 03 00 00 4c 8b 60 48 4d 85 e4 0f 84 bd 02 00 devpts: called with bogus options kobject: 'loop0' (000000001675b699): kobject_uevent_env kobject: 'kvm' (0000000080cd5491): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (000000001675b699): fill_kobj_path: path = '/devices/virtual/block/loop0' RSP: 0018:ffff888051977310 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000009 kobject: 'kvm' (0000000080cd5491): kobject_uevent_env RDX: dffffc0000000000 RSI: 0000000000000004 RDI: 0000000000000048 kobject: 'kvm' (0000000080cd5491): fill_kobj_path: path = '/devices/virtual/misc/kvm' RBP: ffff888051977350 R08: 1ffffffff110633c R09: fffffbfff110633d kobject: 'loop2' (000000003e29d04c): kobject_uevent_env kobject: 'loop2' (000000003e29d04c): fill_kobj_path: path = '/devices/virtual/block/loop2' R10: fffffbfff110633c R11: ffffffff888319e3 R12: 0000000000000000 kobject: 'loop4' (000000000be55a00): kobject_uevent_env R13: ffffc90005a8b000 R14: ffffe8ffffc63720 R15: 0000607f51463720 kobject: 'loop4' (000000000be55a00): fill_kobj_path: path = '/devices/virtual/block/loop4' FS: 00007fb7a4b6d700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 kobject: 'loop3' (000000005c0eb380): kobject_uevent_env CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'loop3' (000000005c0eb380): fill_kobj_path: path = '/devices/virtual/block/loop3' CR2: 00000000007136b4 CR3: 0000000091fe1000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400