list_add corruption. prev->next should be next (ffff8801ae9ee330), but was ffff8801ae9ee340. (prev=ffff88018eb63d18). capability: warning: `syz-executor5' uses 32-bit capabilities (legacy support in use) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:28! invalid opcode: 0000 [#1] SMP KASAN CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 4.19.0-rc1+ #212 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events p9_write_work RIP: 0010:__list_add_valid.cold.0+0x23/0x25 lib/list_debug.c:26 Code: e8 4f 2b 5a fe eb 97 48 89 d9 48 c7 c7 60 b2 3a 87 e8 62 05 02 fe 0f 0b 48 89 f1 48 c7 c7 20 b3 3a 87 48 89 de e8 4e 05 02 fe <0f> 0b 4c 89 e2 48 89 de 48 c7 c7 60 b4 3a 87 e8 3a 05 02 fe 0f 0b RSP: 0018:ffff8801d9ebf590 EFLAGS: 00010282 RAX: 0000000000000075 RBX: ffff8801ae9ee330 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8163ac01 RDI: 0000000000000001 RBP: ffff8801d9ebf5a8 R08: ffff8801d9eb0140 R09: ffffed003b605010 Unknown ioctl 1074835115 R10: ffffed003b605010 R11: ffff8801db028087 R12: ffff88018eb63d18 R13: ffff88018eb63d18 R14: ffff8801ae9ee384 R15: ffff88018eb63d18 FS: 0000000000000000(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd86e11e6c CR3: 00000001ae3d7000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:60 [inline] list_add_tail include/linux/list.h:93 [inline] list_move_tail include/linux/list.h:183 [inline] p9_write_work+0x34e/0xd50 net/9p/trans_fd.c:470 Unknown ioctl 1074835115 process_one_work+0xc73/0x1aa0 kernel/workqueue.c:2153 Unknown ioctl 1074835115 worker_thread+0x189/0x13c0 kernel/workqueue.c:2296 kthread+0x35a/0x420 kernel/kthread.c:246 Unknown ioctl 1074835115 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace a642a7f8abdb869d ]--- RIP: 0010:__list_add_valid.cold.0+0x23/0x25 lib/list_debug.c:26 Code: e8 4f 2b 5a fe eb 97 48 89 d9 48 c7 c7 60 b2 3a 87 e8 62 05 02 fe 0f 0b 48 89 f1 48 c7 c7 20 b3 3a 87 48 89 de e8 4e 05 02 fe <0f> 0b 4c 89 e2 48 89 de 48 c7 c7 60 b4 3a 87 e8 3a 05 02 fe 0f 0b RSP: 0018:ffff8801d9ebf590 EFLAGS: 00010282 RAX: 0000000000000075 RBX: ffff8801ae9ee330 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8163ac01 RDI: 0000000000000001 RBP: ffff8801d9ebf5a8 R08: ffff8801d9eb0140 R09: ffffed003b605010 R10: ffffed003b605010 R11: ffff8801db028087 R12: ffff88018eb63d18 R13: ffff88018eb63d18 R14: ffff8801ae9ee384 R15: ffff88018eb63d18 FS: 0000000000000000(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd86e11e6c CR3: 00000001ae3d7000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400