On Wed, Jul 18, 2018 at 6:29 AM, syzbot <syzbot+a7429c9ff268823af...@syzkaller.appspotmail.com> wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: dc989d2ce2c2 tools: bpftool: don't pass FEATURES_DUMP to l.. > git tree: bpf-next > console output: https://syzkaller.appspot.com/x/log.txt?x=14289578400000 > kernel config: https://syzkaller.appspot.com/x/.config?x=89129667b46496c3 > dashboard link: https://syzkaller.appspot.com/bug?extid=a7429c9ff268823af453 > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=106314c8400000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1495b4c8400000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+a7429c9ff268823af...@syzkaller.appspotmail.com
#syz fix: bpf: sockhash, disallow bpf_tcp_close and update in parallel > ================================================================== > BUG: KASAN: slab-out-of-bounds in do_error_trap+0x3b6/0x4d0 > arch/x86/kernel/traps.c:296 > Read of size 8 at addr ffff8801c0ce3cb0 by task syz-executor113/9480 > > CPU: 1 PID: 9480 Comm: syz-executor113 Not tainted 4.18.0-rc3+ #57 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Call Trace: > > Allocated by task 2164292896: > BUG: unable to handle kernel paging request at ffffffff8c433958 > PGD 8e6d067 P4D 8e6d067 PUD 8e6e063 PMD 0 > Thread overran stack, or stack corrupted > Oops: 0000 [#1] SMP KASAN > CPU: 1 PID: 9480 Comm: syz-executor113 Not tainted 4.18.0-rc3+ #57 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > RIP: 0010:depot_fetch_stack+0x10/0x30 lib/stackdepot.c:201 > Code: e8 c5 2e 47 fe e9 b3 fd ff ff e8 bb 2e 47 fe e9 55 fd ff ff 90 90 90 > 90 90 90 89 f8 c1 ef 11 25 ff ff 1f 00 81 e7 f0 3f 00 00 <48> 03 3c c5 60 39 > 43 8b 8b 47 0c 48 83 c7 18 c7 46 10 00 00 00 00 > RSP: 0018:ffff8801c0ce3a08 EFLAGS: 00010006 > RAX: 00000000001fffff RBX: ffff8801c0ce3bc4 RCX: 0000000000000000 > RDX: 0000000000000000 RSI: ffff8801c0ce3a10 RDI: 0000000000003ff0 > RBP: ffff8801c0ce3a38 R08: ffff8801b2632440 R09: ffffed003b5e3ec2 > R10: ffffed003b5e3ec2 R11: ffff8801daf1f617 R12: ffff8801c0ce2bc0 > R13: ffff8801c0ce3cb0 R14: ffff8801da987dc0 R15: ffff8801c0ce3bc0 > FS: 0000000000b43940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffffff8c433958 CR3: 00000001ae01a000 CR4: 00000000001406e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > Modules linked in: > Dumping ftrace buffer: > (ftrace buffer empty) > CR2: ffffffff8c433958 > ---[ end trace 3b9527e7dfd4d0bc ]--- > RIP: 0010:depot_fetch_stack+0x10/0x30 lib/stackdepot.c:201 > Code: e8 c5 2e 47 fe e9 b3 fd ff ff e8 bb 2e 47 fe e9 55 fd ff ff 90 90 90 > 90 90 90 89 f8 c1 ef 11 25 ff ff 1f 00 81 e7 f0 3f 00 00 <48> 03 3c c5 60 39 > 43 8b 8b 47 0c 48 83 c7 18 c7 46 10 00 00 00 00 > RSP: 0018:ffff8801c0ce3a08 EFLAGS: 00010006 > RAX: 00000000001fffff RBX: ffff8801c0ce3bc4 RCX: 0000000000000000 > RDX: 0000000000000000 RSI: ffff8801c0ce3a10 RDI: 0000000000003ff0 > RBP: ffff8801c0ce3a38 R08: ffff8801b2632440 R09: ffffed003b5e3ec2 > R10: ffffed003b5e3ec2 R11: ffff8801daf1f617 R12: ffff8801c0ce2bc0 > R13: ffff8801c0ce3cb0 R14: ffff8801da987dc0 R15: ffff8801c0ce3bc0 > FS: 0000000000b43940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffffff8c433958 CR3: 00000001ae01a000 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 syzkal...@googlegroups.com. > > syzbot will keep track of this bug report. See: > https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with > syzbot. > syzbot can test patches for this bug, for details see: > https://goo.gl/tpsmEJ#testing-patches > > -- > You received this message because you are subscribed to the Google Groups > "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to syzkaller-bugs+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/syzkaller-bugs/00000000000091198305713e80fd%40google.com. > For more options, visit https://groups.google.com/d/optout.
