From: syzbot <syzbot+9765367bb86a19d38732@syzkaller.appspotmail.com>
To: dhowells@redhat.com, dwmw2@infradead.org,
linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
richard@nod.at, sandeen@sandeen.net,
syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk
Subject: general protection fault in jffs2_parse_param
Date: Mon, 21 Sep 2020 03:02:21 -0700 [thread overview]
Message-ID: <000000000000418c7705afcff2e1@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 325d0eab Merge branch 'akpm' (patches from Andrew)
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=12acb307900000
kernel config: https://syzkaller.appspot.com/x/.config?x=b12e84189082991c
dashboard link: https://syzkaller.appspot.com/bug?extid=9765367bb86a19d38732
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=175909d9900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=179b3cc3900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9765367bb86a19d38732@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 6866 Comm: syz-executor202 Not tainted 5.9.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:jffs2_parse_param+0x141/0x330 fs/jffs2/super.c:206
Code: 48 c1 ea 03 4d 63 fc 80 3c 02 00 0f 85 de 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 00 49 8d 7e 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c8 01 00 00 4d 8b 76 08 4c 89 ff 4c 89 f6 e8 d6
RSP: 0018:ffffc90001087b78 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880932c9c00 RCX: ffffffff82882084
RDX: 0000000000000001 RSI: ffffffff82882096 RDI: 0000000000000008
RBP: 1ffff92000210f6f R08: 0000000000000001 R09: 0000000000000003
R10: 00000000003fffff R11: 0000000000000000 R12: 0000000000000000
R13: ffff88808de2a000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000002198880(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000043e830 CR3: 00000000a11a3000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vfs_parse_fs_param fs/fs_context.c:117 [inline]
vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98
vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161
generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201
do_new_mount fs/namespace.c:2871 [inline]
path_mount+0x133f/0x20a0 fs/namespace.c:3192
do_mount fs/namespace.c:3205 [inline]
__do_sys_mount fs/namespace.c:3413 [inline]
__se_sys_mount fs/namespace.c:3390 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3390
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x44699a
Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d ae fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5a ae fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007ffc381bf788 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffc381bf7d0 RCX: 000000000044699a
RDX: 0000000020001300 RSI: 0000000020001340 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00007ffc381bf7d0 R09: 0000000000000014
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401c80
R13: 0000000000401d10 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 9cf0f624124bffcb ]---
RIP: 0010:jffs2_parse_param+0x141/0x330 fs/jffs2/super.c:206
Code: 48 c1 ea 03 4d 63 fc 80 3c 02 00 0f 85 de 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 00 49 8d 7e 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c8 01 00 00 4d 8b 76 08 4c 89 ff 4c 89 f6 e8 d6
RSP: 0018:ffffc90001087b78 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880932c9c00 RCX: ffffffff82882084
RDX: 0000000000000001 RSI: ffffffff82882096 RDI: 0000000000000008
RBP: 1ffff92000210f6f R08: 0000000000000001 R09: 0000000000000003
R10: 00000000003fffff R11: 0000000000000000 R12: 0000000000000000
R13: ffff88808de2a000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000002198880(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000043e830 CR3: 00000000a11a3000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
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.
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches
WARNING: multiple messages have this Message-ID (diff)
From: syzbot <syzbot+9765367bb86a19d38732@syzkaller.appspotmail.com>
To: dhowells@redhat.com, dwmw2@infradead.org,
linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
richard@nod.at, sandeen@sandeen.net,
syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk
Subject: general protection fault in jffs2_parse_param
Date: Mon, 21 Sep 2020 03:02:21 -0700 [thread overview]
Message-ID: <000000000000418c7705afcff2e1@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 325d0eab Merge branch 'akpm' (patches from Andrew)
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=12acb307900000
kernel config: https://syzkaller.appspot.com/x/.config?x=b12e84189082991c
dashboard link: https://syzkaller.appspot.com/bug?extid=9765367bb86a19d38732
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=175909d9900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=179b3cc3900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9765367bb86a19d38732@syzkaller.appspotmail.com
general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 6866 Comm: syz-executor202 Not tainted 5.9.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:jffs2_parse_param+0x141/0x330 fs/jffs2/super.c:206
Code: 48 c1 ea 03 4d 63 fc 80 3c 02 00 0f 85 de 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 00 49 8d 7e 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c8 01 00 00 4d 8b 76 08 4c 89 ff 4c 89 f6 e8 d6
RSP: 0018:ffffc90001087b78 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880932c9c00 RCX: ffffffff82882084
RDX: 0000000000000001 RSI: ffffffff82882096 RDI: 0000000000000008
RBP: 1ffff92000210f6f R08: 0000000000000001 R09: 0000000000000003
R10: 00000000003fffff R11: 0000000000000000 R12: 0000000000000000
R13: ffff88808de2a000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000002198880(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000043e830 CR3: 00000000a11a3000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vfs_parse_fs_param fs/fs_context.c:117 [inline]
vfs_parse_fs_param+0x203/0x550 fs/fs_context.c:98
vfs_parse_fs_string+0xe6/0x150 fs/fs_context.c:161
generic_parse_monolithic+0x16f/0x1f0 fs/fs_context.c:201
do_new_mount fs/namespace.c:2871 [inline]
path_mount+0x133f/0x20a0 fs/namespace.c:3192
do_mount fs/namespace.c:3205 [inline]
__do_sys_mount fs/namespace.c:3413 [inline]
__se_sys_mount fs/namespace.c:3390 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3390
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x44699a
Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d ae fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5a ae fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007ffc381bf788 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffc381bf7d0 RCX: 000000000044699a
RDX: 0000000020001300 RSI: 0000000020001340 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00007ffc381bf7d0 R09: 0000000000000014
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401c80
R13: 0000000000401d10 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 9cf0f624124bffcb ]---
RIP: 0010:jffs2_parse_param+0x141/0x330 fs/jffs2/super.c:206
Code: 48 c1 ea 03 4d 63 fc 80 3c 02 00 0f 85 de 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 00 49 8d 7e 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c8 01 00 00 4d 8b 76 08 4c 89 ff 4c 89 f6 e8 d6
RSP: 0018:ffffc90001087b78 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880932c9c00 RCX: ffffffff82882084
RDX: 0000000000000001 RSI: ffffffff82882096 RDI: 0000000000000008
RBP: 1ffff92000210f6f R08: 0000000000000001 R09: 0000000000000003
R10: 00000000003fffff R11: 0000000000000000 R12: 0000000000000000
R13: ffff88808de2a000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000002198880(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000043e830 CR3: 00000000a11a3000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
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.
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
next reply other threads:[~2020-09-21 10:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-21 10:02 syzbot [this message]
2020-09-21 10:02 ` general protection fault in jffs2_parse_param syzbot
2021-01-17 16:14 ` syzbot
2021-01-17 16:14 ` [Linux-kernel-mentees] " syzbot
2021-01-17 16:14 ` syzbot
2021-01-25 9:36 ` Dmitry Vyukov
2021-01-25 9:36 ` [Linux-kernel-mentees] " Dmitry Vyukov via Linux-kernel-mentees
2021-01-25 9:36 ` Dmitry Vyukov
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=000000000000418c7705afcff2e1@google.com \
--to=syzbot+9765367bb86a19d38732@syzkaller.appspotmail.com \
--cc=dhowells@redhat.com \
--cc=dwmw2@infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mtd@lists.infradead.org \
--cc=richard@nod.at \
--cc=sandeen@sandeen.net \
--cc=syzkaller-bugs@googlegroups.com \
--cc=viro@zeniv.linux.org.uk \
/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.