KASAN: use-after-free Read in reiserfs_read_locked_inode
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syzbot
Sep 21, 2020, 4:58:21 AM9/21/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: cbfa1702 Linux 4.14.198
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17485a3d900000
kernel config: https://syzkaller.appspot.com/x/.config?x=3990958d85b55e59
dashboard link: https://syzkaller.appspot.com/bug?extid=28cfc5ffa1f71bfc5547
compiler: gcc (GCC) 10.1.0-syz 20200507
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+28cfc5...@syzkaller.appspotmail.com
loop0: p96 size 1073741824 extends beyond EOD, truncated
loop0: p97 size 1073741824 extends beyond EOD, truncated
loop0: p98 size 1073741824 extends beyond EOD, truncated
loop0: p99 size 1073741824 extends beyond EOD, truncated
==================================================================
BUG: KASAN: use-after-free in init_inode fs/reiserfs/inode.c:1326 [inline]
BUG: KASAN: use-after-free in reiserfs_read_locked_inode+0x2028/0x2190 fs/reiserfs/inode.c:1579
loop0: p100 size 1073741824 extends beyond EOD,
Read of size 4 at addr ffff88801629e000 by task syz-executor.5/25816
CPU: 1 PID: 25816 Comm: syz-executor.5 Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
truncated
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
kasan_report_error.cold+0x8a/0x194 mm/kasan/report.c:351
kasan_report mm/kasan/report.c:409 [inline]
__asan_report_load_n_noabort+0x6b/0x80 mm/kasan/report.c:440
init_inode fs/reiserfs/inode.c:1326 [inline]
reiserfs_read_locked_inode+0x2028/0x2190 fs/reiserfs/inode.c:1579
loop0: p101 size 1073741824 extends beyond EOD,
reiserfs_fill_super+0x1517/0x28b6 fs/reiserfs/super.c:2084
truncated
mount_bdev+0x2b3/0x360 fs/super.c:1134
mount_fs+0x92/0x2a0 fs/super.c:1237
vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
vfs_kern_mount fs/namespace.c:1036 [inline]
do_new_mount fs/namespace.c:2549 [inline]
do_mount+0xe53/0x2a00 fs/namespace.c:2879
loop0: p102 size 1073741824 extends beyond EOD,
SYSC_mount fs/namespace.c:3095 [inline]
SyS_mount+0xa8/0x120 fs/namespace.c:3072
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x46004a
RSP: 002b:00007f9235d29a88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9235d29b20 RCX: 000000000046004a
RDX: 0000000020000040 RSI: 0000000020000100 RDI: 00007f9235d29ae0
RBP: 00007f9235d29ae0 R08: 00007f9235d29b20 R09: 0000000020000040
truncated
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000040
R13: 0000000020000100 R14: 0000000020000140 R15: 0000000020011100
The buggy address belongs to the page:
page:ffffea000058a780 count:0 mapcount:0 mapping: (null) index:0x1
flags: 0xfffe0000000000()
raw: 00fffe0000000000 0000000000000000 0000000000000001 00000000ffffffff
raw: ffffea000058a7e0 ffff8880aeb2ed48 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88801629df00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff88801629df80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88801629e000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff88801629e080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88801629e100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
---
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 syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: cbfa1702 Linux 4.14.198
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17485a3d900000
kernel config: https://syzkaller.appspot.com/x/.config?x=3990958d85b55e59
dashboard link: https://syzkaller.appspot.com/bug?extid=28cfc5ffa1f71bfc5547
compiler: gcc (GCC) 10.1.0-syz 20200507
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+28cfc5...@syzkaller.appspotmail.com
loop0: p96 size 1073741824 extends beyond EOD, truncated
loop0: p97 size 1073741824 extends beyond EOD, truncated
loop0: p98 size 1073741824 extends beyond EOD, truncated
loop0: p99 size 1073741824 extends beyond EOD, truncated
==================================================================
BUG: KASAN: use-after-free in init_inode fs/reiserfs/inode.c:1326 [inline]
BUG: KASAN: use-after-free in reiserfs_read_locked_inode+0x2028/0x2190 fs/reiserfs/inode.c:1579
loop0: p100 size 1073741824 extends beyond EOD,
Read of size 4 at addr ffff88801629e000 by task syz-executor.5/25816
CPU: 1 PID: 25816 Comm: syz-executor.5 Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
truncated
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
kasan_report_error.cold+0x8a/0x194 mm/kasan/report.c:351
kasan_report mm/kasan/report.c:409 [inline]
__asan_report_load_n_noabort+0x6b/0x80 mm/kasan/report.c:440
init_inode fs/reiserfs/inode.c:1326 [inline]
reiserfs_read_locked_inode+0x2028/0x2190 fs/reiserfs/inode.c:1579
loop0: p101 size 1073741824 extends beyond EOD,
reiserfs_fill_super+0x1517/0x28b6 fs/reiserfs/super.c:2084
truncated
mount_bdev+0x2b3/0x360 fs/super.c:1134
mount_fs+0x92/0x2a0 fs/super.c:1237
vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
vfs_kern_mount fs/namespace.c:1036 [inline]
do_new_mount fs/namespace.c:2549 [inline]
do_mount+0xe53/0x2a00 fs/namespace.c:2879
loop0: p102 size 1073741824 extends beyond EOD,
SYSC_mount fs/namespace.c:3095 [inline]
SyS_mount+0xa8/0x120 fs/namespace.c:3072
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x46004a
RSP: 002b:00007f9235d29a88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9235d29b20 RCX: 000000000046004a
RDX: 0000000020000040 RSI: 0000000020000100 RDI: 00007f9235d29ae0
RBP: 00007f9235d29ae0 R08: 00007f9235d29b20 R09: 0000000020000040
truncated
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000040
R13: 0000000020000100 R14: 0000000020000140 R15: 0000000020011100
The buggy address belongs to the page:
page:ffffea000058a780 count:0 mapcount:0 mapping: (null) index:0x1
flags: 0xfffe0000000000()
raw: 00fffe0000000000 0000000000000000 0000000000000001 00000000ffffffff
raw: ffffea000058a7e0 ffff8880aeb2ed48 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88801629df00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff88801629df80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88801629e000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff88801629e080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88801629e100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
---
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 syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Sep 21, 2020, 6:17:15 AM9/21/20
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: cbfa1702 Linux 4.14.198
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=144509d9900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=146ec307900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+28cfc5...@syzkaller.appspotmail.com
reiserfs: using flush barriers
REISERFS (device loop0): journal params: device loop0, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
CPU: 1 PID: 6381 Comm: syz-executor462 Not tainted 4.14.198-syzkaller #0
RSP: 002b:00007ffc5020f0e8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffc5020f140 RCX: 0000000000446e7a
RDX: 0000000020000040 RSI: 0000000020000100 RDI: 00007ffc5020f100
RBP: 00007ffc5020f100 R08: 00007ffc5020f140 R09: 00007ffc00000015
R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000006
R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003
The buggy address belongs to the page:
page:ffffea0001f2bec0 count:0 mapcount:0 mapping: (null) index:0x1
ffff88807cafaf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88807cafb000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff88807cafb080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88807cafb100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
HEAD commit: cbfa1702 Linux 4.14.198
git tree: linux-4.14.y
kernel config: https://syzkaller.appspot.com/x/.config?x=3990958d85b55e59
dashboard link: https://syzkaller.appspot.com/bug?extid=28cfc5ffa1f71bfc5547
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11ebc409900000
dashboard link: https://syzkaller.appspot.com/bug?extid=28cfc5ffa1f71bfc5547
compiler: gcc (GCC) 10.1.0-syz 20200507
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=146ec307900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+28cfc5...@syzkaller.appspotmail.com
REISERFS (device loop0): journal params: device loop0, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
==================================================================
BUG: KASAN: use-after-free in init_inode fs/reiserfs/inode.c:1326 [inline]
BUG: KASAN: use-after-free in reiserfs_read_locked_inode+0x2028/0x2190 fs/reiserfs/inode.c:1579
Read of size 4 at addr ffff88807cafb000 by task syz-executor462/6381
BUG: KASAN: use-after-free in init_inode fs/reiserfs/inode.c:1326 [inline]
BUG: KASAN: use-after-free in reiserfs_read_locked_inode+0x2028/0x2190 fs/reiserfs/inode.c:1579
CPU: 1 PID: 6381 Comm: syz-executor462 Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
kasan_report_error.cold+0x8a/0x194 mm/kasan/report.c:351
kasan_report mm/kasan/report.c:409 [inline]
__asan_report_load_n_noabort+0x6b/0x80 mm/kasan/report.c:440
init_inode fs/reiserfs/inode.c:1326 [inline]
reiserfs_read_locked_inode+0x2028/0x2190 fs/reiserfs/inode.c:1579
reiserfs_fill_super+0x1517/0x28b6 fs/reiserfs/super.c:2084
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
kasan_report_error.cold+0x8a/0x194 mm/kasan/report.c:351
kasan_report mm/kasan/report.c:409 [inline]
__asan_report_load_n_noabort+0x6b/0x80 mm/kasan/report.c:440
init_inode fs/reiserfs/inode.c:1326 [inline]
reiserfs_read_locked_inode+0x2028/0x2190 fs/reiserfs/inode.c:1579
mount_bdev+0x2b3/0x360 fs/super.c:1134
mount_fs+0x92/0x2a0 fs/super.c:1237
vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
vfs_kern_mount fs/namespace.c:1036 [inline]
do_new_mount fs/namespace.c:2549 [inline]
do_mount+0xe53/0x2a00 fs/namespace.c:2879
mount_fs+0x92/0x2a0 fs/super.c:1237
vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
vfs_kern_mount fs/namespace.c:1036 [inline]
do_new_mount fs/namespace.c:2549 [inline]
do_mount+0xe53/0x2a00 fs/namespace.c:2879
SYSC_mount fs/namespace.c:3095 [inline]
SyS_mount+0xa8/0x120 fs/namespace.c:3072
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x446e7a
SyS_mount+0xa8/0x120 fs/namespace.c:3072
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RSP: 002b:00007ffc5020f0e8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffc5020f140 RCX: 0000000000446e7a
RDX: 0000000020000040 RSI: 0000000020000100 RDI: 00007ffc5020f100
RBP: 00007ffc5020f100 R08: 00007ffc5020f140 R09: 00007ffc00000015
R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000006
R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003
The buggy address belongs to the page:
flags: 0xfffe0000000000()
raw: 00fffe0000000000 0000000000000000 0000000000000001 00000000ffffffff
raw: ffffea0001f2bf20 ffff8880aeb2ed48 0000000000000000 0000000000000000
raw: 00fffe0000000000 0000000000000000 0000000000000001 00000000ffffffff
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88807cafaf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Memory state around the buggy address:
ffff88807cafaf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88807cafb000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff88807cafb080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88807cafb100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
syzbot
Sep 24, 2020, 3:00:22 PM9/24/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: d09b8017 Linux 4.19.147
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13a0f04b900000
kernel config: https://syzkaller.appspot.com/x/.config?x=47cc70be3c316a0a
dashboard link: https://syzkaller.appspot.com/bug?extid=dfe6b98208f4b9044e1f
==================================================================
BUG: KASAN: use-after-free in init_inode fs/reiserfs/inode.c:1327 [inline]
BUG: KASAN: use-after-free in reiserfs_read_locked_inode+0x216f/0x2220 fs/reiserfs/inode.c:1580
Read of size 4 at addr ffff8880391bf000 by task syz-executor.4/9385
CPU: 0 PID: 9385 Comm: syz-executor.4 Not tainted 4.19.147-syzkaller #0
dump_stack+0x22c/0x33e lib/dump_stack.c:118
print_address_description.cold+0x56/0x25c mm/kasan/report.c:256
kasan_report_error.cold+0x66/0xb9 mm/kasan/report.c:354
kasan_report mm/kasan/report.c:412 [inline]
__asan_report_load_n_noabort+0x8b/0xa0 mm/kasan/report.c:443
init_inode fs/reiserfs/inode.c:1327 [inline]
reiserfs_read_locked_inode+0x216f/0x2220 fs/reiserfs/inode.c:1580
reiserfs_fill_super+0x172e/0x2e60 fs/reiserfs/super.c:2084
mount_bdev+0x2fc/0x3b0 fs/super.c:1158
mount_fs+0xa3/0x318 fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
vfs_kern_mount fs/namespace.c:951 [inline]
do_new_mount fs/namespace.c:2469 [inline]
do_mount+0x51c/0x2f10 fs/namespace.c:2799
ksys_mount+0xcf/0x130 fs/namespace.c:3015
__do_sys_mount fs/namespace.c:3029 [inline]
__se_sys_mount fs/namespace.c:3026 [inline]
__x64_sys_mount+0xba/0x150 fs/namespace.c:3026
do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x460bca
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd 87 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 ba 87 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f50e3bfca88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f50e3bfcb20 RCX: 0000000000460bca
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f50e3bfcae0
RBP: 00007f50e3bfcae0 R08: 00007f50e3bfcb20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020011100
The buggy address belongs to the page:
page:ffffea0000e46fc0 count:0 mapcount:0 mapping:0000000000000000 index:0x1
flags: 0xfffe0000000000()
raw: 00fffe0000000000 ffffea0000e47008 ffff8880ae22fc88 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
ffff8880391bef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880391bf000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff8880391bf080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8880391bf100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
syzbot found the following issue on:
HEAD commit: d09b8017 Linux 4.19.147
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13a0f04b900000
kernel config: https://syzkaller.appspot.com/x/.config?x=47cc70be3c316a0a
dashboard link: https://syzkaller.appspot.com/bug?extid=dfe6b98208f4b9044e1f
compiler: gcc (GCC) 10.1.0-syz 20200507
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+dfe6b9...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in init_inode fs/reiserfs/inode.c:1327 [inline]
BUG: KASAN: use-after-free in reiserfs_read_locked_inode+0x216f/0x2220 fs/reiserfs/inode.c:1580
Read of size 4 at addr ffff8880391bf000 by task syz-executor.4/9385
CPU: 0 PID: 9385 Comm: syz-executor.4 Not tainted 4.19.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
Call Trace:
dump_stack+0x22c/0x33e lib/dump_stack.c:118
print_address_description.cold+0x56/0x25c mm/kasan/report.c:256
kasan_report_error.cold+0x66/0xb9 mm/kasan/report.c:354
kasan_report mm/kasan/report.c:412 [inline]
__asan_report_load_n_noabort+0x8b/0xa0 mm/kasan/report.c:443
init_inode fs/reiserfs/inode.c:1327 [inline]
reiserfs_read_locked_inode+0x216f/0x2220 fs/reiserfs/inode.c:1580
reiserfs_fill_super+0x172e/0x2e60 fs/reiserfs/super.c:2084
mount_bdev+0x2fc/0x3b0 fs/super.c:1158
mount_fs+0xa3/0x318 fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
vfs_kern_mount fs/namespace.c:951 [inline]
do_new_mount fs/namespace.c:2469 [inline]
do_mount+0x51c/0x2f10 fs/namespace.c:2799
ksys_mount+0xcf/0x130 fs/namespace.c:3015
__do_sys_mount fs/namespace.c:3029 [inline]
__se_sys_mount fs/namespace.c:3026 [inline]
__x64_sys_mount+0xba/0x150 fs/namespace.c:3026
do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x460bca
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd 87 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 ba 87 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f50e3bfca88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f50e3bfcb20 RCX: 0000000000460bca
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f50e3bfcae0
RBP: 00007f50e3bfcae0 R08: 00007f50e3bfcb20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020011100
The buggy address belongs to the page:
flags: 0xfffe0000000000()
raw: 00fffe0000000000 ffffea0000e47008 ffff8880ae22fc88 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8880391bef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Memory state around the buggy address:
ffff8880391bef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880391bf000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff8880391bf080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8880391bf100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
syzbot
Sep 24, 2020, 3:48:18 PM9/24/20
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: d09b8017 Linux 4.19.147
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=10249f07900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15fbc63d900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+dfe6b9...@syzkaller.appspotmail.com
CPU: 1 PID: 6497 Comm: syz-executor121 Not tainted 4.19.147-syzkaller #0
Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d a3 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 a3 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007ffed15f11d8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffed15f1230 RCX: 0000000000447d7a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffed15f11f0
RBP: 00007ffed15f11f0 R08: 00007ffed15f1230 R09: 0000000000000000
flags: 0xfffe0000000000()
raw: 00fffe0000000000 ffffea0001f0b948 ffff8880ae32fc88 0000000000000000
ffff88807c2e3f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88807c2e4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff88807c2e4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88807c2e4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
HEAD commit: d09b8017 Linux 4.19.147
git tree: linux-4.19.y
kernel config: https://syzkaller.appspot.com/x/.config?x=47cc70be3c316a0a
dashboard link: https://syzkaller.appspot.com/bug?extid=dfe6b98208f4b9044e1f
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16e4e44b900000
dashboard link: https://syzkaller.appspot.com/bug?extid=dfe6b98208f4b9044e1f
compiler: gcc (GCC) 10.1.0-syz 20200507
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15fbc63d900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+dfe6b9...@syzkaller.appspotmail.com
reiserfs: using flush barriers
REISERFS (device loop0): journal params: device loop0, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
REISERFS (device loop0): journal params: device loop0, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
==================================================================
BUG: KASAN: use-after-free in init_inode fs/reiserfs/inode.c:1327 [inline]
BUG: KASAN: use-after-free in reiserfs_read_locked_inode+0x216f/0x2220 fs/reiserfs/inode.c:1580
Read of size 4 at addr ffff88807c2e4000 by task syz-executor121/6497
BUG: KASAN: use-after-free in init_inode fs/reiserfs/inode.c:1327 [inline]
BUG: KASAN: use-after-free in reiserfs_read_locked_inode+0x216f/0x2220 fs/reiserfs/inode.c:1580
CPU: 1 PID: 6497 Comm: syz-executor121 Not tainted 4.19.147-syzkaller #0
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+0x22c/0x33e lib/dump_stack.c:118
print_address_description.cold+0x56/0x25c mm/kasan/report.c:256
kasan_report_error.cold+0x66/0xb9 mm/kasan/report.c:354
kasan_report mm/kasan/report.c:412 [inline]
__asan_report_load_n_noabort+0x8b/0xa0 mm/kasan/report.c:443
init_inode fs/reiserfs/inode.c:1327 [inline]
reiserfs_read_locked_inode+0x216f/0x2220 fs/reiserfs/inode.c:1580
reiserfs_fill_super+0x172e/0x2e60 fs/reiserfs/super.c:2084
mount_bdev+0x2fc/0x3b0 fs/super.c:1158
mount_fs+0xa3/0x318 fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
vfs_kern_mount fs/namespace.c:951 [inline]
do_new_mount fs/namespace.c:2469 [inline]
do_mount+0x51c/0x2f10 fs/namespace.c:2799
ksys_mount+0xcf/0x130 fs/namespace.c:3015
__do_sys_mount fs/namespace.c:3029 [inline]
__se_sys_mount fs/namespace.c:3026 [inline]
__x64_sys_mount+0xba/0x150 fs/namespace.c:3026
do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x447d7a
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x22c/0x33e lib/dump_stack.c:118
print_address_description.cold+0x56/0x25c mm/kasan/report.c:256
kasan_report_error.cold+0x66/0xb9 mm/kasan/report.c:354
kasan_report mm/kasan/report.c:412 [inline]
__asan_report_load_n_noabort+0x8b/0xa0 mm/kasan/report.c:443
init_inode fs/reiserfs/inode.c:1327 [inline]
reiserfs_read_locked_inode+0x216f/0x2220 fs/reiserfs/inode.c:1580
reiserfs_fill_super+0x172e/0x2e60 fs/reiserfs/super.c:2084
mount_bdev+0x2fc/0x3b0 fs/super.c:1158
mount_fs+0xa3/0x318 fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
vfs_kern_mount fs/namespace.c:951 [inline]
do_new_mount fs/namespace.c:2469 [inline]
do_mount+0x51c/0x2f10 fs/namespace.c:2799
ksys_mount+0xcf/0x130 fs/namespace.c:3015
__do_sys_mount fs/namespace.c:3029 [inline]
__se_sys_mount fs/namespace.c:3026 [inline]
__x64_sys_mount+0xba/0x150 fs/namespace.c:3026
do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d a3 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 a3 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007ffed15f11d8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffed15f1230 RCX: 0000000000447d7a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffed15f11f0
RBP: 00007ffed15f11f0 R08: 00007ffed15f1230 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000006
R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003
R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003
The buggy address belongs to the page:
page:ffffea0001f0b900 count:0 mapcount:0 mapping:0000000000000000 index:0x1
flags: 0xfffe0000000000()
raw: 00fffe0000000000 ffffea0001f0b948 ffff8880ae32fc88 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88807c2e3f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88807c2e3f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88807c2e4000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff88807c2e4080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88807c2e4100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
syzbot
Jan 14, 2021, 10:06:10 PM1/14/21
to syzkaller...@googlegroups.com
syzbot suspects this issue was fixed by commit:
commit b8590c82b3ccf9fb4d9f0b0b097be10736869333
Author: Rustam Kovhaev <rkov...@gmail.com>
Date: Sun Nov 1 14:09:58 2020 +0000
reiserfs: add check for an invalid ih_entry_count
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15ce7cd0d00000
start commit: a1b977b4 Linux 4.19.150
git tree: linux-4.19.y
kernel config: https://syzkaller.appspot.com/x/.config?x=c14008c8da1ca4d4
dashboard link: https://syzkaller.appspot.com/bug?extid=dfe6b98208f4b9044e1f
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16ca3907900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16e51280500000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: reiserfs: add check for an invalid ih_entry_count
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
commit b8590c82b3ccf9fb4d9f0b0b097be10736869333
Author: Rustam Kovhaev <rkov...@gmail.com>
Date: Sun Nov 1 14:09:58 2020 +0000
reiserfs: add check for an invalid ih_entry_count
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15ce7cd0d00000
start commit: a1b977b4 Linux 4.19.150
git tree: linux-4.19.y
kernel config: https://syzkaller.appspot.com/x/.config?x=c14008c8da1ca4d4
dashboard link: https://syzkaller.appspot.com/bug?extid=dfe6b98208f4b9044e1f
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16ca3907900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16e51280500000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: reiserfs: add check for an invalid ih_entry_count
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
syzbot
Feb 19, 2021, 8:52:08 PM2/19/21
to syzkaller...@googlegroups.com
syzbot suspects this issue was fixed by commit:
commit b74d5f70523a819aac71e0eee4f4b530e69e463a
Author: Rustam Kovhaev <rkov...@gmail.com>
Date: Sun Nov 1 14:09:58 2020 +0000
reiserfs: add check for an invalid ih_entry_count
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16b7c324d00000
Date: Sun Nov 1 14:09:58 2020 +0000
reiserfs: add check for an invalid ih_entry_count
start commit: cbfa1702 Linux 4.14.198
git tree: linux-4.14.y
kernel config: https://syzkaller.appspot.com/x/.config?x=3990958d85b55e59
dashboard link: https://syzkaller.appspot.com/bug?extid=28cfc5ffa1f71bfc5547
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17fa5b4d900000
dashboard link: https://syzkaller.appspot.com/bug?extid=28cfc5ffa1f71bfc5547
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17c28beb900000
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