Messages in this thread | | | Date | Sun, 15 Jul 2018 22:59:03 -0700 | Subject | BUG: corrupted list in p9_read_work | From | syzbot <> |
| |
Hello,
syzbot found the following crash on:
HEAD commit: 37b5dca2898d Merge tag 'rtc-4.18-2' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12b3e770400000 kernel config: https://syzkaller.appspot.com/x/.config?x=25856fac4e580aa7 dashboard link: https://syzkaller.appspot.com/bug?extid=2222c34dc40b515f30dc compiler: gcc (GCC) 8.0.1 20180413 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+2222c34dc40b515f30dc@syzkaller.appspotmail.com
list_del corruption, ffff8801931d8e28->next is LIST_POISON1 (dead000000000100) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:47! invalid opcode: 0000 [#1] SMP KASAN CPU: 0 PID: 27 Comm: kworker/0:2 Not tainted 4.18.0-rc4+ #148 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events p9_read_work RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x58 lib/list_debug.c:45 Code: 02 fe 0f 0b 4c 89 e2 48 89 de 48 c7 c7 60 68 1a 88 e8 ba 69 02 fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 00 68 1a 88 e8 a6 69 02 fe <0f> 0b 48 89 de 48 c7 c7 20 69 1a 88 e8 95 69 02 fe 0f 0b 48 89 de RSP: 0018:ffff8801d94575b0 EFLAGS: 00010286 RAX: 000000000000004e RBX: ffff8801931d8e28 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81631821 RDI: 0000000000000001 RBP: ffff8801d94575c8 R08: ffff8801d9448700 R09: ffffed003b5c4fc0 R10: ffffed003b5c4fc0 R11: ffff8801dae27e07 R12: dead000000000200 R13: dead000000000100 R14: ffff8801931d8e00 R15: ffff8801996f7a10 FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9e4e7e0000 CR3: 00000001aeeae000 CR4: 00000000001406f0 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] p9_read_work+0xa29/0x1060 net/9p/trans_fd.c:375 process_one_work+0xc73/0x1ba0 kernel/workqueue.c:2153 worker_thread+0x189/0x13c0 kernel/workqueue.c:2296 kthread+0x345/0x410 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace 4e7d7b3b542c6c1e ]--- RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x58 lib/list_debug.c:45 Code: 02 fe 0f 0b 4c 89 e2 48 89 de 48 c7 c7 60 68 1a 88 e8 ba 69 02 fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 00 68 1a 88 e8 a6 69 02 fe <0f> 0b 48 89 de 48 c7 c7 20 69 1a 88 e8 95 69 02 fe 0f 0b 48 89 de RSP: 0018:ffff8801d94575b0 EFLAGS: 00010286 RAX: 000000000000004e RBX: ffff8801931d8e28 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81631821 RDI: 0000000000000001 RBP: ffff8801d94575c8 R08: ffff8801d9448700 R09: ffffed003b5c4fc0 R10: ffffed003b5c4fc0 R11: ffff8801dae27e07 R12: dead000000000200 R13: dead000000000100 R14: ffff8801931d8e00 R15: ffff8801996f7a10 FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9e4e7e0000 CR3: 00000001aeeae000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
--- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with syzbot.
| |