From: syzbot <syzbot+c94a3675a626f6333d74@syzkaller.appspotmail.com>
To: avihaih@nvidia.com, dledford@redhat.com, haakon.bugge@oracle.com,
jgg@ziepe.ca, leon@kernel.org, linux-kernel@vger.kernel.org,
linux-rdma@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: [syzbot] BUG: corrupted list in rdma_listen (2)
Date: Sat, 04 Dec 2021 01:54:17 -0800 [thread overview]
Message-ID: <000000000000c3eace05d24f0189@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: bf152b0b41dc Merge tag 'for_linus' of git://git.kernel.org..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=136e3a46b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=4a0a845d34d07474
dashboard link: https://syzkaller.appspot.com/bug?extid=c94a3675a626f6333d74
userspace arch: arm
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c94a3675a626f6333d74@syzkaller.appspotmail.com
list_add corruption. prev->next should be next (82bbca08), but was 00000000. (prev=865e75ac).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:26!
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 1 PID: 5339 Comm: syz-executor.1 Not tainted 5.12.0-rc3-syzkaller #0
Hardware name: ARM-Versatile Express
PC is at __list_add_valid+0x80/0x84 lib/list_debug.c:26
LR is at wake_up_klogd.part.0+0x7c/0xb4 kernel/printk/printk.c:3118
pc : [<808072b8>] lr : [<802d21b0>] psr: 60000013
sp : 86657e30 ip : 86657d60 fp : 86657e3c
r10: 81104354 r9 : 00000010 r8 : 865e75ac
r7 : 82bbca08 r6 : 865e7400 r5 : 865e75ac r4 : 82bbc6d8
r3 : 00000000 r2 : 00000000 r1 : ddfd6688 r0 : 0000005d
Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
Control: 30c5387d Table: 86712700 DAC: 00000000
Process syz-executor.1 (pid: 5339, stack limit = 0x86656210)
Stack: (0x86657e30 to 0x86658000)
7e20: 86657e6c 86657e40 810e61b8 80807244
7e40: 00000010 56b92eae 86657e6c 86424900 86ca70c0 86424948 811034c0 84343b40
7e60: 86657e9c 86657e70 811035a0 810e6048 8046d9e4 00000000 00000005 56b92eae
7e80: 86ca70c0 00000010 200008c0 86ca70c0 86657ed4 86657ea0 811044a0 811034cc
7ea0: 804d8fc8 00000007 fa000008 56b92eae 00004000 00000000 86c46140 200008c0
7ec0: ffffe000 00000000 86657f64 86657ed8 804da914 81104360 853d5140 82bfd5ec
7ee0: 86c46140 81f40284 86657f3c 86657ef8 80502e64 802bf578 00000000 00000000
7f00: 80502d24 835f4000 86657f3c 81f718ac 8020d140 00000000 00000000 200008c0
7f20: 00000010 80200224 86656000 00000004 86657f4c 56b92eae 80502f48 86c46141
7f40: 86c46140 200008c0 00000010 80200224 86656000 00000004 86657f94 86657f68
7f60: 804dad30 804da838 86657f94 86657f78 828abd1c 56b92eae 00000000 00000000
7f80: ffffffff 00000004 86657fa4 86657f98 804dad78 804dac88 00000000 86657fa8
7fa0: 80200060 804dad74 00000000 00000000 00000003 200008c0 00000010 00000000
7fc0: 00000000 00000000 ffffffff 00000004 7ebc531a 76f7b6d0 7ebc54a4 76f7b20c
7fe0: 76f7b048 76f7b038 00018e9c 0004ba40 60000010 00000003 00000000 00000000
Backtrace:
[<80807238>] (__list_add_valid) from [<810e61b8>] (__list_add include/linux/list.h:67 [inline])
[<80807238>] (__list_add_valid) from [<810e61b8>] (list_add_tail include/linux/list.h:100 [inline])
[<80807238>] (__list_add_valid) from [<810e61b8>] (cma_listen_on_all drivers/infiniband/core/cma.c:2557 [inline])
[<80807238>] (__list_add_valid) from [<810e61b8>] (rdma_listen+0x17c/0x37c drivers/infiniband/core/cma.c:3751)
[<810e603c>] (rdma_listen) from [<811035a0>] (ucma_listen+0xe0/0x130 drivers/infiniband/core/ucma.c:1102)
r8:84343b40 r7:811034c0 r6:86424948 r5:86ca70c0 r4:86424900
[<811034c0>] (ucma_listen) from [<811044a0>] (ucma_write+0x14c/0x1b0 drivers/infiniband/core/ucma.c:1732)
r6:86ca70c0 r5:200008c0 r4:00000010
[<81104354>] (ucma_write) from [<804da914>] (vfs_write+0xe8/0x350 fs/read_write.c:603)
r8:00000000 r7:ffffe000 r6:200008c0 r5:86c46140 r4:00000000
[<804da82c>] (vfs_write) from [<804dad30>] (ksys_write+0xb4/0xec fs/read_write.c:658)
r10:00000004 r9:86656000 r8:80200224 r7:00000010 r6:200008c0 r5:86c46140
r4:86c46141
[<804dac7c>] (ksys_write) from [<804dad78>] (__do_sys_write fs/read_write.c:670 [inline])
[<804dac7c>] (ksys_write) from [<804dad78>] (sys_write+0x10/0x14 fs/read_write.c:667)
r7:00000004 r6:ffffffff r5:00000000 r4:00000000
[<804dad68>] (sys_write) from [<80200060>] (ret_fast_syscall+0x0/0x2c arch/arm/mm/proc-v7.S:64)
Exception stack(0x86657fa8 to 0x86657ff0)
7fa0: 00000000 00000000 00000003 200008c0 00000010 00000000
7fc0: 00000000 00000000 ffffffff 00000004 7ebc531a 76f7b6d0 7ebc54a4 76f7b20c
7fe0: 76f7b048 76f7b038 00018e9c 0004ba40
Code: e34801fa e1a02001 e1a0100c eb3ffb2e (e7f001f2)
---[ end trace 7ea3f2e08d88cef1 ]---
----------------
Code disassembly (best guess):
0: e34801fa movt r0, #33274 ; 0x81fa
4: e1a02001 mov r2, r1
8: e1a0100c mov r1, ip
c: eb3ffb2e bl 0xffeccc
* 10: e7f001f2 udf #18 <-- trapping instruction
---
This report 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 issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
next reply other threads:[~2021-12-04 9:54 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-04 9:54 syzbot [this message]
2021-12-06 15:41 ` [syzbot] BUG: corrupted list in rdma_listen (2) Jason Gunthorpe
2021-12-06 15:46 ` Dmitry Vyukov
2021-12-06 17:35 ` Jason Gunthorpe
2021-12-07 8:37 ` Dmitry Vyukov
2021-12-07 17:15 ` Jason Gunthorpe
2022-02-08 16:46 ` syzbot
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=000000000000c3eace05d24f0189@google.com \
--to=syzbot+c94a3675a626f6333d74@syzkaller.appspotmail.com \
--cc=avihaih@nvidia.com \
--cc=dledford@redhat.com \
--cc=haakon.bugge@oracle.com \
--cc=jgg@ziepe.ca \
--cc=leon@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=syzkaller-bugs@googlegroups.com \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.