LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: syzbot <syzbot+26de17458aeda9d305d8@syzkaller.appspotmail.com>
To: davem@davemloft.net, linux-kernel@vger.kernel.org,
	linux-rdma@vger.kernel.org, netdev@vger.kernel.org,
	rds-devel@oss.oracle.com, santosh.shilimkar@oracle.com,
	syzkaller-bugs@googlegroups.com
Subject: WARNING in rds_message_alloc_sgs
Date: Tue, 30 Oct 2018 12:28:04 -0700	[thread overview]
Message-ID: <0000000000003c6b7b0579772ff3@google.com> (raw)

Hello,

syzbot found the following crash on:

HEAD commit:    6201f31a39f8 Add linux-next specific files for 20181030
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1397d06d400000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2a22859d870756c1
dashboard link: https://syzkaller.appspot.com/bug?extid=26de17458aeda9d305d8
compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10bb52eb400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=118bdfc5400000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+26de17458aeda9d305d8@syzkaller.appspotmail.com

WARNING: CPU: 0 PID: 19789 at net/rds/message.c:316  
rds_message_alloc_sgs+0x10c/0x160 net/rds/message.c:316
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 19789 Comm: syz-executor827 Not tainted 4.19.0-next-20181030+  
#101
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:77 [inline]
  dump_stack+0x244/0x39d lib/dump_stack.c:113
  panic+0x2ad/0x55c kernel/panic.c:188
  __warn.cold.8+0x20/0x45 kernel/panic.c:540
  report_bug+0x254/0x2d0 lib/bug.c:186
  fixup_bug arch/x86/kernel/traps.c:178 [inline]
  do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
  do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:290
  invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:969
RIP: 0010:rds_message_alloc_sgs+0x10c/0x160 net/rds/message.c:316
Code: c0 74 04 3c 03 7e 6c 44 01 ab 78 01 00 00 e8 2b 9e 35 fa 4c 89 e0 48  
83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 14 9e 35 fa <0f> 0b 31 ff 44  
89 ee e8 18 9f 35 fa 45 85 ed 75 1b e8 fe 9d 35 fa
RSP: 0018:ffff8801c51b7460 EFLAGS: 00010293
RAX: ffff8801bc412080 RBX: ffff8801d7bf4040 RCX: ffffffff8749c9e6
RDX: 0000000000000000 RSI: ffffffff8749ca5c RDI: 0000000000000004
RBP: ffff8801c51b7490 R08: ffff8801bc412080 R09: ffffed003b5c5b67
R10: ffffed003b5c5b67 R11: ffff8801dae2db3b R12: 0000000000000000
R13: 000000000007165c R14: 000000000007165c R15: 0000000000000005
  rds_cmsg_rdma_args+0x82d/0x1510 net/rds/rdma.c:623
  rds_cmsg_send net/rds/send.c:971 [inline]
  rds_sendmsg+0x19a2/0x3180 net/rds/send.c:1273
  sock_sendmsg_nosec net/socket.c:622 [inline]
  sock_sendmsg+0xd5/0x120 net/socket.c:632
  ___sys_sendmsg+0x7fd/0x930 net/socket.c:2117
  __sys_sendmsg+0x11d/0x280 net/socket.c:2155
  __do_sys_sendmsg net/socket.c:2164 [inline]
  __se_sys_sendmsg net/socket.c:2162 [inline]
  __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2162
  do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x44a859
Code: e8 dc e6 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 6b cb fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f1d4710ada8 EFLAGS: 00000297 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000006dcc28 RCX: 000000000044a859
RDX: 0000000000000000 RSI: 0000000020001600 RDI: 0000000000000003
RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000297 R12: 00000000006dcc2c
R13: 646e732f7665642f R14: 00007f1d4710b9c0 R15: 00000000006dcd2c
Kernel Offset: disabled
Rebooting in 86400 seconds..


---
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.
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches

             reply	other threads:[~2018-10-30 19:28 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-30 19:28 syzbot [this message]
2018-10-30 19:38 ` Santosh Shilimkar
2018-10-31  6:42   ` Leon Romanovsky
2018-10-31 16:44     ` Santosh Shilimkar

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=0000000000003c6b7b0579772ff3@google.com \
    --to=syzbot+26de17458aeda9d305d8@syzkaller.appspotmail.com \
    --cc=davem@davemloft.net \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-rdma@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=rds-devel@oss.oracle.com \
    --cc=santosh.shilimkar@oracle.com \
    --cc=syzkaller-bugs@googlegroups.com \
    --subject='Re: WARNING in rds_message_alloc_sgs' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).