WARNING in rds_cmsg_rdma_args
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syzbot
Jan 3, 2018, 3:58:03 AM1/3/18
to da...@davemloft.net, linux-...@vger.kernel.org, linux...@vger.kernel.org, net...@vger.kernel.org, rds-...@oss.oracle.com, santosh....@oracle.com, syzkall...@googlegroups.com
Hello,
syzkaller hit the following crash on
ad036b63ee57df9ab802a4eb20cbbbec66aa4520
git://git.cmpxchg.org/linux-mmots.git/master
compiler: gcc (GCC) 7.1.1 20170620
.config is attached
Raw console output is attached.
C reproducer is attached
syzkaller reproducer is attached. See https://goo.gl/kgGztJ
for information about syzkaller reproducers
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+ef175b...@syzkaller.appspotmail.com
It will help syzbot understand when the bug is fixed. See footer for
details.
If you forward the report, please keep this part and the footer.
audit: type=1400 audit(1514947982.760:7): avc: denied { map } for
pid=3468 comm="syzkaller284818" path="/root/syzkaller284818499" dev="sda1"
ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023
tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
WARNING: CPU: 1 PID: 3468 at net/rds/rdma.c:617
rds_cmsg_rdma_args+0xe96/0x1360 net/rds/rdma.c:617
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 3468 Comm: syzkaller284818 Not tainted 4.15.0-rc6-mm1+ #50
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x137/0x198 lib/dump_stack.c:53
panic+0x1e4/0x41c kernel/panic.c:183
__warn+0x1dc/0x200 kernel/panic.c:547
report_bug+0x211/0x2d0 lib/bug.c:184
fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
fixup_bug arch/x86/kernel/traps.c:247 [inline]
do_error_trap+0x249/0x290 arch/x86/kernel/traps.c:296
do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1079
RIP: 0010:rds_cmsg_rdma_args+0xe96/0x1360 net/rds/rdma.c:617
RSP: 0018:ffff8801d4677700 EFLAGS: 00010293
RAX: ffff8801c04c0640 RBX: ffff8801d85e58b8 RCX: ffffffff84862946
RDX: 0000000000000000 RSI: 00000000014080c0 RDI: ffff8801bf9ddef0
RBP: ffff8801d4677890 R08: 0000000000000000 R09: 0000000000000000
R10: ffff8801d4677618 R11: 0000000000000001 R12: 0000000000000000
R13: ffff8801d85e5880 R14: ffff8801bff0cdc0 R15: 1ffff1003a8ceef4
rds_cmsg_send net/rds/send.c:943 [inline]
rds_sendmsg+0x1264/0x1e80 net/rds/send.c:1127
sock_sendmsg_nosec net/socket.c:628 [inline]
sock_sendmsg+0xca/0x110 net/socket.c:638
___sys_sendmsg+0x2f4/0x8c0 net/socket.c:2018
__sys_sendmmsg+0x159/0x3c0 net/socket.c:2108
SYSC_sendmmsg net/socket.c:2139 [inline]
SyS_sendmmsg+0x35/0x60 net/socket.c:2134
entry_SYSCALL_64_fastpath+0x23/0x9a
RIP: 0033:0x43fe49
RSP: 002b:00007fffcc68d268 EFLAGS: 00000217 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fe49
RDX: 0000000000000001 RSI: 000000002099ffc4 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004017b0
R13: 0000000000401840 R14: 0000000000000000 R15: 0000000000000000
Dumping ftrace buffer:
(ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
This bug is generated by a dumb bot. It may contain errors.
See https://goo.gl/tpsmEJ for details.
Direct all questions to syzk...@googlegroups.com.
syzbot will keep track of this bug report.
If you forgot to add the Reported-by tag, once the fix for this bug is
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To mark this as a duplicate of another syzbot report, please reply with:
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Note: if the crash happens again, it will cause creation of a new bug
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syzkaller hit the following crash on
ad036b63ee57df9ab802a4eb20cbbbec66aa4520
git://git.cmpxchg.org/linux-mmots.git/master
compiler: gcc (GCC) 7.1.1 20170620
.config is attached
Raw console output is attached.
C reproducer is attached
syzkaller reproducer is attached. See https://goo.gl/kgGztJ
for information about syzkaller reproducers
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+ef175b...@syzkaller.appspotmail.com
It will help syzbot understand when the bug is fixed. See footer for
details.
If you forward the report, please keep this part and the footer.
audit: type=1400 audit(1514947982.760:7): avc: denied { map } for
pid=3468 comm="syzkaller284818" path="/root/syzkaller284818499" dev="sda1"
ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023
tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
WARNING: CPU: 1 PID: 3468 at net/rds/rdma.c:617
rds_cmsg_rdma_args+0xe96/0x1360 net/rds/rdma.c:617
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 3468 Comm: syzkaller284818 Not tainted 4.15.0-rc6-mm1+ #50
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x137/0x198 lib/dump_stack.c:53
panic+0x1e4/0x41c kernel/panic.c:183
__warn+0x1dc/0x200 kernel/panic.c:547
report_bug+0x211/0x2d0 lib/bug.c:184
fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
fixup_bug arch/x86/kernel/traps.c:247 [inline]
do_error_trap+0x249/0x290 arch/x86/kernel/traps.c:296
do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1079
RIP: 0010:rds_cmsg_rdma_args+0xe96/0x1360 net/rds/rdma.c:617
RSP: 0018:ffff8801d4677700 EFLAGS: 00010293
RAX: ffff8801c04c0640 RBX: ffff8801d85e58b8 RCX: ffffffff84862946
RDX: 0000000000000000 RSI: 00000000014080c0 RDI: ffff8801bf9ddef0
RBP: ffff8801d4677890 R08: 0000000000000000 R09: 0000000000000000
R10: ffff8801d4677618 R11: 0000000000000001 R12: 0000000000000000
R13: ffff8801d85e5880 R14: ffff8801bff0cdc0 R15: 1ffff1003a8ceef4
rds_cmsg_send net/rds/send.c:943 [inline]
rds_sendmsg+0x1264/0x1e80 net/rds/send.c:1127
sock_sendmsg_nosec net/socket.c:628 [inline]
sock_sendmsg+0xca/0x110 net/socket.c:638
___sys_sendmsg+0x2f4/0x8c0 net/socket.c:2018
__sys_sendmmsg+0x159/0x3c0 net/socket.c:2108
SYSC_sendmmsg net/socket.c:2139 [inline]
SyS_sendmmsg+0x35/0x60 net/socket.c:2134
entry_SYSCALL_64_fastpath+0x23/0x9a
RIP: 0033:0x43fe49
RSP: 002b:00007fffcc68d268 EFLAGS: 00000217 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fe49
RDX: 0000000000000001 RSI: 000000002099ffc4 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004017b0
R13: 0000000000401840 R14: 0000000000000000 R15: 0000000000000000
Dumping ftrace buffer:
(ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
This bug is generated by a dumb bot. It may contain errors.
See https://goo.gl/tpsmEJ for details.
Direct all questions to syzk...@googlegroups.com.
syzbot will keep track of this bug report.
If you forgot to add the Reported-by tag, once the fix for this bug is
merged
into any tree, please reply to this email with:
#syz fix: exact-commit-title
If you want to test a patch for this bug, please reply with:
#syz test: git://repo/address.git branch
and provide the patch inline or as an attachment.
To mark this as a duplicate of another syzbot report, please reply with:
#syz dup: exact-subject-of-another-report
If it's a one-off invalid bug report, please reply with:
#syz invalid
Note: if the crash happens again, it will cause creation of a new bug
report.
Note: all commands must start from beginning of the line in the email body.
Santosh Shilimkar
Jan 3, 2018, 1:43:22 PM1/3/18
to syzbot, da...@davemloft.net, linux-...@vger.kernel.org, linux...@vger.kernel.org, net...@vger.kernel.org, rds-...@oss.oracle.com, syzkall...@googlegroups.com, Mohamed Ghannam
On 1/3/2018 12:58 AM, syzbot wrote:
> Hello,
>
> syzkaller hit the following crash on
> ad036b63ee57df9ab802a4eb20cbbbec66aa4520
> git://git.cmpxchg.org/linux-mmots.git/master
> compiler: gcc (GCC) 7.1.1 20170620
> .config is attached
> Raw console output is attached.
> C reproducer is attached
> syzkaller reproducer is attached. See
>
> Hello,
>
> syzkaller hit the following crash on
> ad036b63ee57df9ab802a4eb20cbbbec66aa4520
> git://git.cmpxchg.org/linux-mmots.git/master
> compiler: gcc (GCC) 7.1.1 20170620
> .config is attached
> Raw console output is attached.
> C reproducer is attached
> syzkaller reproducer is attached. See
>
> for information about syzkaller reproducers
>
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+ef175b...@syzkaller.appspotmail.com
> It will help syzbot understand when the bug is fixed. See footer for
> details.
> If you forward the report, please keep this part and the footer.
>
> audit: type=1400 audit(1514947982.760:7): avc: denied { map } for
> pid=3468 comm="syzkaller284818" path="/root/syzkaller284818499"
> dev="sda1" ino=16481
> scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023
> tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
> WARNING: CPU: 1 PID: 3468 at net/rds/rdma.c:617
> rds_cmsg_rdma_args+0xe96/0x1360 net/rds/rdma.c:617
> Kernel panic - not syncing: panic_on_warn set ...
>
+Mohamed Ghannam, who was discussing similar issue and was going
>
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+ef175b...@syzkaller.appspotmail.com
> It will help syzbot understand when the bug is fixed. See footer for
> details.
> If you forward the report, please keep this part and the footer.
>
> audit: type=1400 audit(1514947982.760:7): avc: denied { map } for
> pid=3468 comm="syzkaller284818" path="/root/syzkaller284818499"
> dev="sda1" ino=16481
> scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023
> tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
> WARNING: CPU: 1 PID: 3468 at net/rds/rdma.c:617
> rds_cmsg_rdma_args+0xe96/0x1360 net/rds/rdma.c:617
> Kernel panic - not syncing: panic_on_warn set ...
>
to post fix for it. Checking args->nr_local against 0 upfront would
address this issue as well.
Regards,
Santosh
Mohamed Ghannam
Jan 3, 2018, 1:51:13 PM1/3/18
to Santosh Shilimkar, syzbot, David Miller, linux-...@vger.kernel.org, linux...@vger.kernel.org, net...@vger.kernel.org, rds-...@oss.oracle.com, syzkall...@googlegroups.com
2018-01-03 18:43 GMT+00:00 Santosh Shilimkar <santosh....@oracle.com>:
On 1/3/2018 12:58 AM, syzbot wrote:
Hello,
syzkaller hit the following crash on ad036b63ee57df9ab802a4eb20cbbbec66aa4520
git://git.cmpxchg.org/linux-mmots.git/master
compiler: gcc (GCC) 7.1.1 20170620
.config is attached
Raw console output is attached.
C reproducer is attached
syzkaller reproducer is attached. See
for information about syzkaller reproducers
IMPORTANT: if you fix the bug, please add the following tag to the commit:
It will help syzbot understand when the bug is fixed. See footer for details.
If you forward the report, please keep this part and the footer.
audit: type=1400 audit(1514947982.760:7): avc: denied { map } for pid=3468 comm="syzkaller284818" path="/root/syzkaller284818499" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
WARNING: CPU: 1 PID: 3468 at net/rds/rdma.c:617 rds_cmsg_rdma_args+0xe96/0x1360 net/rds/rdma.c:617
Kernel panic - not syncing: panic_on_warn set ...
Santosh Shilimkar
Jan 3, 2018, 2:01:00 PM1/3/18
to Mohamed Ghannam, syzbot, David Miller, linux-...@vger.kernel.org, linux...@vger.kernel.org, net...@vger.kernel.org, rds-...@oss.oracle.com, syzkall...@googlegroups.com
On 1/3/2018 10:51 AM, Mohamed Ghannam wrote:
> The fix : https://patchwork.ozlabs.org/patch/854723/
Cool. Thanks Mohamed for following it up.
Regards,
Santosh
Dmitry Vyukov
Jan 4, 2018, 7:12:50 AM1/4/18
to Santosh Shilimkar, Mohamed Ghannam, syzbot, David Miller, LKML, linux...@vger.kernel.org, netdev, rds-...@oss.oracle.com, syzkall...@googlegroups.com
On Wed, Jan 3, 2018 at 7:55 PM, Santosh Shilimkar
<santosh....@oracle.com> wrote:
>
> On 1/3/2018 10:51 AM, Mohamed Ghannam wrote:
>>
>> The fix : https://patchwork.ozlabs.org/patch/854723/
>
>
> Cool. Thanks Mohamed for following it up.
Since this was submitted without the Reported-by tag, we need to tell
<santosh....@oracle.com> wrote:
>
> On 1/3/2018 10:51 AM, Mohamed Ghannam wrote:
>>
>> The fix : https://patchwork.ozlabs.org/patch/854723/
>
>
> Cool. Thanks Mohamed for following it up.
syzbot about the fix separately:
#syz fix: RDS: Heap OOB write in rds_message_alloc_sgs()
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