audit: type=1400 audit(1554924615.401:36): avc: denied { map } for pid=8027 comm="syz-executor155" path="/root/syz-executor155910495" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 list_del corruption, ffff8880a90efa28->next is LIST_POISON1 (dead000000000100) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:45! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8042 Comm: syz-executor155 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid.cold+0x23/0x4f lib/list_debug.c:45 Code: e8 b5 de 30 fe 0f 0b 4c 89 f6 48 c7 c7 40 a2 81 87 e8 a4 de 30 fe 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 80 a1 81 87 e8 90 de 30 fe <0f> 0b 4c 89 e2 4c 89 f6 48 c7 c7 e0 a1 81 87 e8 7c de 30 fe 0f 0b RSP: 0018:ffff8880a90ef8e8 EFLAGS: 00010082 RAX: 000000000000004e RBX: ffff8880a90efa10 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8155d206 RDI: ffffed101521df0f RBP: ffff8880a90ef900 R08: 000000000000004e R09: ffffed1015d24fe9 R10: ffffed1015d24fe8 R11: ffff8880ae927f47 R12: dead000000000200 R13: dead000000000100 R14: ffff8880a90efa28 R15: ffff8880a90efa30 FS: 0000000001f5e880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 000000008d182000 CR4: 00000000001406e0 Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_del include/linux/list.h:125 [inline] __remove_wait_queue include/linux/wait.h:184 [inline] remove_wait_queue+0x2f/0x190 kernel/sched/wait.c:44 __tipc_sendstream+0x3db/0xaa0 net/tipc/socket.c:1446 tipc_sendstream+0x53/0x80 net/tipc/socket.c:1411 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:632 sock_write_iter+0x27c/0x3e0 net/socket.c:901 call_write_iter include/linux/fs.h:1811 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x58e/0x820 fs/read_write.c:487 vfs_write+0x20c/0x560 fs/read_write.c:549 ksys_write+0xea/0x1f0 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 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x445089 Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 bb cd fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffcc581f8c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445089 RDX: 0000000000152610 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000000d6d7 R08: 0000000b004002e0 R09: 0000000b004002e0 R10: 0000000b004002e0 R11: 0000000000000246 R12: 00000000004022d0 R13: 0000000000402360 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace daeb8fd9afcb1ed7 ]--- RIP: 0010:__list_del_entry_valid.cold+0x23/0x4f lib/list_debug.c:45 Code: e8 b5 de 30 fe 0f 0b 4c 89 f6 48 c7 c7 40 a2 81 87 e8 a4 de 30 fe 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 80 a1 81 87 e8 90 de 30 fe <0f> 0b 4c 89 e2 4c 89 f6 48 c7 c7 e0 a1 81 87 e8 7c de 30 fe 0f 0b RSP: 0018:ffff8880a90ef8e8 EFLAGS: 00010082 RAX: 000000000000004e RBX: ffff8880a90efa10 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8155d206 RDI: ffffed101521df0f RBP: ffff8880a90ef900 R08: 000000000000004e R09: ffffed1015d24fe9 R10: ffffed1015d24fe8 R11: ffff8880ae927f47 R12: dead000000000200 R13: dead000000000100 R14: ffff8880a90efa28 R15: ffff8880a90efa30 FS: 0000000001f5e880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 000000008d182000 CR4: 00000000001406e0