bisecting fixing commit since ad326970d25cc85128cd22d62398751ad072efff building syzkaller on ff4a3345a1b2a40ff1b8b983153d0b1fcc72f1c5 testing commit ad326970d25cc85128cd22d62398751ad072efff with gcc (GCC) 8.1.0 kernel signature: 6f4b04faed41ab2b237e40e41737a706c3d8461af2b51e946274170c9cddafec run #0: crashed: BUG: corrupted list in remove_wait_queue run #1: crashed: BUG: corrupted list in remove_wait_queue run #2: crashed: BUG: corrupted list in remove_wait_queue run #3: crashed: BUG: corrupted list in remove_wait_queue run #4: crashed: BUG: corrupted list in remove_wait_queue run #5: crashed: BUG: corrupted list in remove_wait_queue run #6: crashed: BUG: corrupted list in remove_wait_queue run #7: crashed: BUG: corrupted list in corrupted run #8: crashed: BUG: corrupted list in corrupted run #9: crashed: BUG: corrupted list in corrupted testing current HEAD 2c746135a12e3f329171ed168ca0078d468f6d85 testing commit 2c746135a12e3f329171ed168ca0078d468f6d85 with gcc (GCC) 8.1.0 kernel signature: 3b06df66b152a95e842cd57a316a68b35c950f177e2142336bb5203e48231817 run #0: crashed: BUG: corrupted list in remove_wait_queue run #1: crashed: BUG: corrupted list in remove_wait_queue run #2: crashed: BUG: corrupted list in remove_wait_queue run #3: crashed: BUG: corrupted list in remove_wait_queue run #4: crashed: BUG: corrupted list in remove_wait_queue run #5: crashed: BUG: corrupted list in remove_wait_queue run #6: crashed: BUG: corrupted list in remove_wait_queue run #7: crashed: BUG: corrupted list in corrupted run #8: crashed: BUG: corrupted list in corrupted run #9: crashed: BUG: corrupted list in corrupted revisions tested: 2, total time: 38m47.422692686s (build: 18m23.306526805s, test: 19m40.239048957s) the crash still happens on HEAD commit msg: Linux 4.19.158 crash: BUG: corrupted list in corrupted bond0 (unregistering): Released all slaves list_del corruption, ffff88809b027640->next is LIST_POISON1 (dead000000000100) list_del corruption, ffff88809a7b7640->next is LIST_POISON1 (dead000000000100) ------------[ cut here ]------------ ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:47! invalid opcode: 0000 [#1] PREEMPT SMP KASAN kernel BUG at lib/list_debug.c:47! CPU: 1 PID: 20472 Comm: syz-executor656 Not tainted 4.19.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x58 lib/list_debug.c:45 Code: 00 fe 0f 0b 4c 89 e2 48 89 de 48 c7 c7 60 5c 8b 87 e8 16 b3 00 fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 00 5c 8b 87 e8 02 b3 00 fe <0f> 0b 48 89 de 48 c7 c7 20 5d 8b 87 e8 f1 b2 00 fe 0f 0b 48 89 de RSP: 0018:ffff88809b0274d0 EFLAGS: 00010086 RAX: 000000000000004e RBX: ffff88809b027640 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878b5960 RDI: ffffffff8a3e1a60 RBP: ffff88809b0274e8 R08: ffffed10174a5081 R09: ffffed10174a5080 R10: ffffed10174a5080 R11: ffff8880ba528407 R12: dead000000000200 R13: dead000000000100 R14: ffff8880a5e003c0 R15: ffff8880a77dfa00 FS: 00007ff3c1a47700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559886398160 CR3: 00000000a5055000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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+0x30/0x1b0 kernel/sched/wait.c:44 tipc_send_group_bcast+0x33a/0xa10 net/tipc/socket.c:1022 tipc_send_group_mcast net/tipc/socket.c:1109 [inline] __tipc_sendmsg+0x44a/0x12f0 net/tipc/socket.c:1317 tipc_sendmsg+0x4b/0x70 net/tipc/socket.c:1276 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xac/0xf0 net/socket.c:632 ___sys_sendmsg+0x28e/0x950 net/socket.c:2115 __sys_sendmmsg+0x160/0x370 net/socket.c:2210 __do_sys_sendmmsg net/socket.c:2239 [inline] __se_sys_sendmmsg net/socket.c:2236 [inline] __x64_sys_sendmmsg+0x98/0x100 net/socket.c:2236 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x446a09 Code: e8 0c e8 ff ff 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 db 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff3c1a46db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446a09 RDX: 08000000000000b0 RSI: 0000000020000a40 RDI: 0000000000000004 RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c R13: 00007fff91e93d7f R14: 00007ff3c1a479c0 R15: 000000000000002d Modules linked in: ---[ end trace a7b574062d1727b3 ]--- invalid opcode: 0000 [#2] PREEMPT SMP KASAN RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x58 lib/list_debug.c:45 CPU: 0 PID: 20477 Comm: syz-executor656 Tainted: G D 4.19.158-syzkaller #0 Code: 00 fe 0f 0b 4c 89 e2 48 89 de 48 c7 c7 60 5c 8b 87 e8 16 b3 00 fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 00 5c 8b 87 e8 02 b3 00 fe <0f> 0b 48 89 de 48 c7 c7 20 5d 8b 87 e8 f1 b2 00 fe 0f 0b 48 89 de Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RSP: 0018:ffff88809b0274d0 EFLAGS: 00010086 RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x58 lib/list_debug.c:45 RAX: 000000000000004e RBX: ffff88809b027640 RCX: 0000000000000000 Code: 00 fe 0f 0b 4c 89 e2 48 89 de 48 c7 c7 60 5c 8b 87 e8 16 b3 00 fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 00 5c 8b 87 e8 02 b3 00 fe <0f> 0b 48 89 de 48 c7 c7 20 5d 8b 87 e8 f1 b2 00 fe 0f 0b 48 89 de RDX: 0000000000000000 RSI: ffffffff878b5960 RDI: ffffffff8a3e1a60 RSP: 0018:ffff88809a7b74d0 EFLAGS: 00010086 RBP: ffff88809b0274e8 R08: ffffed10174a5081 R09: ffffed10174a5080 RAX: 000000000000004e RBX: ffff88809a7b7640 RCX: 0000000000000000 R10: ffffed10174a5080 R11: ffff8880ba528407 R12: dead000000000200 RDX: 0000000000000000 RSI: ffffffff878b5960 RDI: ffffffff8a3e1a60 R13: dead000000000100 R14: ffff8880a5e003c0 R15: ffff8880a77dfa00 RBP: ffff88809a7b74e8 R08: ffffed1017485081 R09: ffffed1017485080 R10: ffffed1017485080 R11: ffff8880ba428407 R12: dead000000000200 FS: 00007ff3c1a47700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 R13: dead000000000100 R14: ffff8880b5d9e480 R15: ffff88807f198180 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 FS: 00007ff3c1a47700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CR2: 0000559886398160 CR3: 00000000a5055000 CR4: 00000000001406e0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 CR2: 00000000004ccc50 CR3: 00000000aacc3000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: