Messages in this thread | | | Date | Fri, 28 Dec 2018 11:51:03 -0800 | Subject | general protection fault in ax25cmp | From | syzbot <> |
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Hello,
syzbot found the following crash on:
HEAD commit: d8924c0d76aa Merge tag 'devprop-4.21-rc1' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=145051dd400000 kernel config: https://syzkaller.appspot.com/x/.config?x=91a256823ef17263 dashboard link: https://syzkaller.appspot.com/bug?extid=1a2c456a1ea08fa5b5f7 compiler: gcc (GCC) 8.0.1 20180413 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1683ae57400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1410f3af400000
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+1a2c456a1ea08fa5b5f7@syzkaller.appspotmail.com
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: 1 PID: 2660 Comm: aoe_tx0 Not tainted 4.20.0+ #388 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ax25cmp+0x3e/0x180 net/ax25/ax25_addr.c:122 Code: f6 41 55 49 89 fd 41 54 49 89 f4 53 48 83 ec 10 48 89 7d d0 48 89 75 c8 e8 ff 46 7f fa 4c 89 e8 4c 89 ea 48 c1 e8 03 83 e2 07 <42> 0f b6 04 38 38 d0 7f 08 84 c0 0f 85 23 01 00 00 4c 89 e0 4c 89 RSP: 0018:ffff8881ce3cf3c8 EFLAGS: 00010202 RAX: 0000000000000002 RBX: ffff8881c5a59800 RCX: 0000000000000001 RDX: 0000000000000007 RSI: ffffffff86ff11d1 RDI: 0000000000000017 RBP: ffff8881ce3cf400 R08: ffffed1039c79e70 R09: ffffed1039c79e6f R10: ffffed1039c79e6f R11: 0000000000000003 R12: ffff8881c5a59808 R13: 0000000000000017 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe5864d7d4 CR3: 000000000946a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rose_route_frame+0x2d6/0x19b0 net/rose/rose_route.c:885 rose_xmit+0x8e/0x180 net/rose/rose_dev.c:110 __netdev_start_xmit include/linux/netdevice.h:4356 [inline] netdev_start_xmit include/linux/netdevice.h:4365 [inline] xmit_one net/core/dev.c:3257 [inline] dev_hard_start_xmit+0x295/0xc90 net/core/dev.c:3273 __dev_queue_xmit+0x2f0d/0x3950 net/core/dev.c:3843 dev_queue_xmit+0x17/0x20 net/core/dev.c:3876 tx+0x77/0xd0 drivers/block/aoe/aoenet.c:63 kthread+0x296/0x4a0 drivers/block/aoe/aoecmd.c:1248 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace 623634688d1951e4 ]--- RIP: 0010:ax25cmp+0x3e/0x180 net/ax25/ax25_addr.c:122 Code: f6 41 55 49 89 fd 41 54 49 89 f4 53 48 83 ec 10 48 89 7d d0 48 89 75 c8 e8 ff 46 7f fa 4c 89 e8 4c 89 ea 48 c1 e8 03 83 e2 07 <42> 0f b6 04 38 38 d0 7f 08 84 c0 0f 85 23 01 00 00 4c 89 e0 4c 89 RSP: 0018:ffff8881ce3cf3c8 EFLAGS: 00010202 RAX: 0000000000000002 RBX: ffff8881c5a59800 RCX: 0000000000000001 RDX: 0000000000000007 RSI: ffffffff86ff11d1 RDI: 0000000000000017 RBP: ffff8881ce3cf400 R08: ffffed1039c79e70 R09: ffffed1039c79e6f R10: ffffed1039c79e6f R11: 0000000000000003 R12: ffff8881c5a59808 R13: 0000000000000017 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe5864d7d4 CR3: 000000000946a000 CR4: 00000000001406e0 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.
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