panic: tcp_output

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syzbot

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Feb 25, 2019, 5:38:05 AM2/25/19
to syzkaller-...@googlegroups.com
Hello,

syzbot found the following crash on:

HEAD commit: 92d3cba1c669 It seems EEE support is not only on 8211F bu..
git tree: netbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=159ba548c00000
dashboard link: https://syzkaller.appspot.com/bug?extid=5f336a7f0e3f23077e88

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+5f336a...@syzkaller.appspotmail.com

login: [ 85.3181653] panic: tcp_output
[ 85.3181653] cpu0: Begin traceback...
[ 85.3306912] vpanic() at netbsd:vpanic+0x214
[ 85.3306912] snprintf() at netbsd:snprintf
[ 85.3435380] tcp_output() at netbsd:tcp_output+0x4114
[ 85.3557466] tcp_sendoob_wrapper() at netbsd:tcp_sendoob_wrapper+0x21e
[ 85.3687687] sosend() at netbsd:sosend+0xa23
[ 85.3811972] do_sys_sendmsg_so() at netbsd:do_sys_sendmsg_so+0x3c7
[ 85.3947394] do_sys_sendmsg() at netbsd:do_sys_sendmsg+0x181
[ 85.4058411] sys_sendmsg() at netbsd:sys_sendmsg+0xc4
[ 85.4183662] sys___syscall() at netbsd:sys___syscall+0xe2
[ 85.4311712] syscall() at netbsd:syscall+0x30e
[ 85.4450917] --- syscall (number 198) ---
[ 85.4559416] 76cdb863f4aa:
[ 85.4559416] cpu0: End traceback...

[ 85.4559416] dumping to dev 4,1 (offset=0, size=0): not possible
[ 85.4559416] rebooting...
SeaBIOS (version 1.8.2-20181029_212248-google)
Total RAM Size = 0x00000001e0000000 = 7680 MiB
CPUs found: 2 Max CPUs supported: 2
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0
removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f2a00: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Booting from Hard Disk 0...

>> NetBSD/x86 BIOS Boot, Revision 5.10 (Tue Jul 17 14:59:51 UTC 2018) (from
>> NetBSD 8.0)
>> Memory: 639/3144640 k

1. Boot normally
2. Boot single user
3. Disable ACPI
4. Disable ACPI and SMP
5. Drop to boot prompt


---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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syzbot.

syzbot

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Feb 25, 2019, 6:09:05 AM2/25/19
to syzkaller-...@googlegroups.com
syzbot has found a reproducer for the following crash on:

HEAD commit: 92d3cba1c669 It seems EEE support is not only on 8211F bu..
git tree: netbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=10e6be70c00000
dashboard link: https://syzkaller.appspot.com/bug?extid=5f336a7f0e3f23077e88
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11ad9ca4c00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=134376e0c00000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+5f336a...@syzkaller.appspotmail.com

[ 39.0003323] panic: tcp_output
[ 39.0003323] cpu0: Begin traceback...
[ 39.0003323] vpanic() at netbsd:vpanic+0x214
[ 39.0146239] snprintf() at netbsd:snprintf
[ 39.0146239] tcp_output() at netbsd:tcp_output+0x4114
[ 39.0146239] tcp_sendoob_wrapper() at netbsd:tcp_sendoob_wrapper+0x21e
[ 39.0295189] sosend() at netbsd:sosend+0xa23
[ 39.0432087] do_sys_sendmsg_so() at netbsd:do_sys_sendmsg_so+0x3c7
[ 39.0432087] do_sys_sendmsg() at netbsd:do_sys_sendmsg+0x181
[ 39.0604375] sys_sendmsg() at netbsd:sys_sendmsg+0xc4
[ 39.0719842] sys_syscall() at netbsd:sys_syscall+0xe2
[ 39.0868210] syscall() at netbsd:syscall+0x30e
[ 39.0868210] --- syscall (number 0) ---
[ 39.1044401] 7010b6a3f4ca:
[ 39.1044401] cpu0: End traceback...

[ 39.1146744] dumping to dev 4,1 (offset=0, size=0): not possible
[ 39.1146744] rebooting...
SeaBIOS (version 1.8.2-20181029_212248-google)
Total RAM Size = 0x00000001e0000000 = 7680 MiB
CPUs found: 2 Max CPUs supported: 2
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0
removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f2a00: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Booting from Hard Disk 0...

>> NetBSD/x86 BIOS Boot, Revision 5.10 (Tue Jul 17 14:59:51 UTC 2018) (from
>> NetBSD 8.0)
>> Memory: 639/3144640 k

1. Boot normally
2. Boot single user
3. Disable ACPI
4. Disable ACPI and SMP
5. Drop to boot prompt
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\ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - WARNING: couldn't
open /var/db/entropy-file
WARNING: 1 module failed to load

Maxime Villard

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Mar 3, 2019, 9:03:10 AM3/3/19
to syzbot, syzkaller-...@googlegroups.com
I changed the panic message, so it's a duplicate

#syz dup: panic: tcp_output: no template
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