KASAN: user-memory-access Read in do_con_trol
17 views
Skip to first unread message
syzbot
Feb 19, 2020, 9:05:10 AM2/19/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 9b15f7fa Linux 4.19.104
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1617a1dde00000
kernel config: https://syzkaller.appspot.com/x/.config?x=6515a92286073717
dashboard link: https://syzkaller.appspot.com/bug?extid=c23287497985af069595
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
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+c23287...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: user-memory-access in memcpy include/linux/string.h:348 [inline]
BUG: KASAN: user-memory-access in scr_memcpyw include/linux/vt_buffer.h:49 [inline]
BUG: KASAN: user-memory-access in delete_char drivers/tty/vt/vt.c:852 [inline]
BUG: KASAN: user-memory-access in csi_P drivers/tty/vt/vt.c:1986 [inline]
BUG: KASAN: user-memory-access in do_con_trol+0x3b9/0x6070 drivers/tty/vt/vt.c:2360
Read of size 2 at addr 000000010000000e by task syz-executor.2/13540
CPU: 0 PID: 13540 Comm: syz-executor.2 Not tainted 4.19.104-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+0x197/0x210 lib/dump_stack.c:118
kasan_report_error mm/kasan/report.c:352 [inline]
kasan_report mm/kasan/report.c:412 [inline]
kasan_report.cold+0x199/0x2ba mm/kasan/report.c:396
check_memory_region_inline mm/kasan/kasan.c:260 [inline]
check_memory_region+0x123/0x190 mm/kasan/kasan.c:267
memcpy+0x24/0x50 mm/kasan/kasan.c:302
memcpy include/linux/string.h:348 [inline]
scr_memcpyw include/linux/vt_buffer.h:49 [inline]
delete_char drivers/tty/vt/vt.c:852 [inline]
csi_P drivers/tty/vt/vt.c:1986 [inline]
do_con_trol+0x3b9/0x6070 drivers/tty/vt/vt.c:2360
do_con_write.part.0+0xfd5/0x1eb0 drivers/tty/vt/vt.c:2773
do_con_write drivers/tty/vt/vt.c:2541 [inline]
con_write+0x46/0xd0 drivers/tty/vt/vt.c:3110
process_output_block drivers/tty/n_tty.c:593 [inline]
n_tty_write+0x3f9/0x1140 drivers/tty/n_tty.c:2331
do_tty_write drivers/tty/tty_io.c:960 [inline]
tty_write+0x458/0x7a0 drivers/tty/tty_io.c:1044
__vfs_write+0x114/0x810 fs/read_write.c:485
vfs_write+0x20c/0x560 fs/read_write.c:549
ksys_write+0x14f/0x2d0 fs/read_write.c:599
__do_sys_write fs/read_write.c:611 [inline]
__se_sys_write fs/read_write.c:608 [inline]
__x64_sys_write+0x73/0xb0 fs/read_write.c:608
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c449
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8c40225c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8c402266d4 RCX: 000000000045c449
RDX: 0000000000000320 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000cad R14: 00000000004ce949 R15: 000000000076bf2c
==================================================================
---
This bug 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 bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: 9b15f7fa Linux 4.19.104
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1617a1dde00000
kernel config: https://syzkaller.appspot.com/x/.config?x=6515a92286073717
dashboard link: https://syzkaller.appspot.com/bug?extid=c23287497985af069595
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
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+c23287...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: user-memory-access in memcpy include/linux/string.h:348 [inline]
BUG: KASAN: user-memory-access in scr_memcpyw include/linux/vt_buffer.h:49 [inline]
BUG: KASAN: user-memory-access in delete_char drivers/tty/vt/vt.c:852 [inline]
BUG: KASAN: user-memory-access in csi_P drivers/tty/vt/vt.c:1986 [inline]
BUG: KASAN: user-memory-access in do_con_trol+0x3b9/0x6070 drivers/tty/vt/vt.c:2360
Read of size 2 at addr 000000010000000e by task syz-executor.2/13540
CPU: 0 PID: 13540 Comm: syz-executor.2 Not tainted 4.19.104-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+0x197/0x210 lib/dump_stack.c:118
kasan_report_error mm/kasan/report.c:352 [inline]
kasan_report mm/kasan/report.c:412 [inline]
kasan_report.cold+0x199/0x2ba mm/kasan/report.c:396
check_memory_region_inline mm/kasan/kasan.c:260 [inline]
check_memory_region+0x123/0x190 mm/kasan/kasan.c:267
memcpy+0x24/0x50 mm/kasan/kasan.c:302
memcpy include/linux/string.h:348 [inline]
scr_memcpyw include/linux/vt_buffer.h:49 [inline]
delete_char drivers/tty/vt/vt.c:852 [inline]
csi_P drivers/tty/vt/vt.c:1986 [inline]
do_con_trol+0x3b9/0x6070 drivers/tty/vt/vt.c:2360
do_con_write.part.0+0xfd5/0x1eb0 drivers/tty/vt/vt.c:2773
do_con_write drivers/tty/vt/vt.c:2541 [inline]
con_write+0x46/0xd0 drivers/tty/vt/vt.c:3110
process_output_block drivers/tty/n_tty.c:593 [inline]
n_tty_write+0x3f9/0x1140 drivers/tty/n_tty.c:2331
do_tty_write drivers/tty/tty_io.c:960 [inline]
tty_write+0x458/0x7a0 drivers/tty/tty_io.c:1044
__vfs_write+0x114/0x810 fs/read_write.c:485
vfs_write+0x20c/0x560 fs/read_write.c:549
ksys_write+0x14f/0x2d0 fs/read_write.c:599
__do_sys_write fs/read_write.c:611 [inline]
__se_sys_write fs/read_write.c:608 [inline]
__x64_sys_write+0x73/0xb0 fs/read_write.c:608
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c449
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8c40225c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8c402266d4 RCX: 000000000045c449
RDX: 0000000000000320 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000cad R14: 00000000004ce949 R15: 000000000076bf2c
==================================================================
---
This bug 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 bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Feb 20, 2020, 7:31:11 AM2/20/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 98db2bf2 Linux 4.14.171
syzbot found the following crash on:
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=12eb8265e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=365f8162d5a0794b
dashboard link: https://syzkaller.appspot.com/bug?extid=5b7abf2ac1d20a3044de
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
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+5b7abf...@syzkaller.appspotmail.com
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:
==================================================================
BUG: KASAN: user-memory-access in memcpy include/linux/string.h:347 [inline]
BUG: KASAN: user-memory-access in scr_memcpyw include/linux/vt_buffer.h:49 [inline]
BUG: KASAN: user-memory-access in delete_char drivers/tty/vt/vt.c:546 [inline]
BUG: KASAN: user-memory-access in csi_P drivers/tty/vt/vt.c:1648 [inline]
BUG: KASAN: user-memory-access in do_con_trol+0x3188/0x5b40 drivers/tty/vt/vt.c:2022
Read of size 338 at addr 00000000fffffebe by task syz-executor.3/1272
CPU: 1 PID: 1272 Comm: syz-executor.3 Not tainted 4.14.171-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
Call Trace:
dump_stack+0x142/0x197 lib/dump_stack.c:58
kasan_report_error mm/kasan/report.c:349 [inline]
kasan_report mm/kasan/report.c:409 [inline]
kasan_report.cold+0x127/0x2af mm/kasan/report.c:393
check_memory_region_inline mm/kasan/kasan.c:260 [inline]
check_memory_region+0x123/0x190 mm/kasan/kasan.c:267
memcpy+0x24/0x50 mm/kasan/kasan.c:302
memcpy include/linux/string.h:347 [inline]
check_memory_region+0x123/0x190 mm/kasan/kasan.c:267
memcpy+0x24/0x50 mm/kasan/kasan.c:302
scr_memcpyw include/linux/vt_buffer.h:49 [inline]
delete_char drivers/tty/vt/vt.c:546 [inline]
csi_P drivers/tty/vt/vt.c:1648 [inline]
do_con_trol+0x3188/0x5b40 drivers/tty/vt/vt.c:2022
do_con_write.part.0+0xcc7/0x1b50 drivers/tty/vt/vt.c:2434
do_con_write drivers/tty/vt/vt.c:2205 [inline]
con_write+0x38/0xc0 drivers/tty/vt/vt.c:2787
process_output_block drivers/tty/n_tty.c:595 [inline]
n_tty_write+0x38b/0xf20 drivers/tty/n_tty.c:2333
do_tty_write drivers/tty/tty_io.c:959 [inline]
tty_write+0x3f6/0x700 drivers/tty/tty_io.c:1043
__vfs_write+0x105/0x6b0 fs/read_write.c:480
vfs_write+0x198/0x500 fs/read_write.c:544
SYSC_write fs/read_write.c:590 [inline]
SyS_write+0xfd/0x230 fs/read_write.c:582
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c449
RSP: 002b:00007fe608442c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe6084436d4 RCX: 000000000045c449
RDX: 0000000000000004 RSI: 0000000020000080 RDI: 0000000000000003
syzbot
Jun 19, 2020, 8:31:13 AM6/19/20
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
syzbot
Jul 30, 2020, 8:46:14 PM7/30/20
to syzkaller...@googlegroups.com
Reply all
Reply to author
Forward
0 new messages