syzbot

 sign-in | mailing list | source | docs
🐞 Open [1418]
≡ Subsystems
🐞 Fixed [5828]
🐞 Invalid [14219]
⬇ Missing Backports [92]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
Total Repo Heatmap Subsystems Heatmap
💬 Send us feedback

BUG: unable to handle kernel paging request in do_con_trol

Status: closed as dup on 2020/07/20 22:52
Subsystems: serial
[Documentation on labels]
Reported-by: syzbot+9bce437b96dc287eafef@syzkaller.appspotmail.com
First crash: 1811d, last: 1611d
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: no output from test machine (log)
Repro: C syz .config
  
▶ ▼ Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
general protection fault in do_con_write C done 10703 1579d 1814d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
BUG: unable to handle kernel paging request in do_con_trol 0 (2) 2019/12/09 17:19
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 BUG: unable to handle kernel paging request in do_con_trol C inconclusive 29 1638d 1809d 0/1 upstream: reported C repro on 2019/12/09 17:13
linux-4.19 BUG: unable to handle kernel paging request in do_con_trol C done 36 1577d 1809d 1/1 fixed on 2020/08/28 16:06
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2020/07/12 06:49 10m syzkaller-bugs@googlegroups.com upstream report log
2020/07/10 16:17 0m brookebasile@gmail.com upstream error
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2020/04/12 03:24 19m bisect fix upstream OK (0) job log log

Sample crash report:
BUG: unable to handle page fault for address: 000000010000000e
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 98324067 P4D 98324067 PUD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 10405 Comm: syz-executor162 Not tainted 5.5.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:memset16 arch/x86/include/asm/string_64.h:25 [inline]
RIP: 0010:scr_memsetw include/linux/vt_buffer.h:36 [inline]
RIP: 0010:csi_K drivers/tty/vt/vt.c:1558 [inline]
RIP: 0010:do_con_trol+0x47ea/0x61b0 drivers/tty/vt/vt.c:2370
Code: 08 2c 01 0f 8e b1 00 00 00 4c 8b bd 08 ff ff ff 48 63 db 44 89 e9 41 0f b7 84 24 c8 03 00 00 48 01 db d1 e9 49 01 df 4c 89 ff <f3> 66 ab 49 8d bc 24 78 04 00 00 b8 ff ff 37 00 48 89 fa 48 c1 e0
RSP: 0018:ffffc90001f778b0 EFLAGS: 00010202
RAX: 0000000000000720 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 1ffff11012914279 RSI: ffffffff83ed596d RDI: 000000010000000e
RBP: ffffc90001f779d0 R08: ffff8880963b2140 R09: ffff8880963b29d0
R10: fffffbfff14f69d0 R11: ffffffff8a7b4e87 R12: ffff8880948a1000
R13: 0000000000000002 R14: 0000000000000001 R15: 000000010000000e
FS:  0000000001b9b880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000010000000e CR3: 000000009fd6a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_con_write.part.0+0xfd9/0x1ef0 drivers/tty/vt/vt.c:2797
 do_con_write drivers/tty/vt/vt.c:2565 [inline]
 con_write+0x46/0xd0 drivers/tty/vt/vt.c:3135
 process_output_block drivers/tty/n_tty.c:595 [inline]
 n_tty_write+0x40e/0x1080 drivers/tty/n_tty.c:2333
 do_tty_write drivers/tty/tty_io.c:962 [inline]
 tty_write+0x496/0x7f0 drivers/tty/tty_io.c:1046
 __vfs_write+0x8a/0x110 fs/read_write.c:494
 vfs_write+0x268/0x5d0 fs/read_write.c:558
 ksys_write+0x14f/0x290 fs/read_write.c:611
 __do_sys_write fs/read_write.c:623 [inline]
 __se_sys_write fs/read_write.c:620 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:620
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4404f9
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 5b 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc7f4277f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004404f9
RDX: 0000000000000078 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401de0
R13: 0000000000401e70 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: 000000010000000e
---[ end trace 632c731256a58fe9 ]---
RIP: 0010:memset16 arch/x86/include/asm/string_64.h:25 [inline]
RIP: 0010:scr_memsetw include/linux/vt_buffer.h:36 [inline]
RIP: 0010:csi_K drivers/tty/vt/vt.c:1558 [inline]
RIP: 0010:do_con_trol+0x47ea/0x61b0 drivers/tty/vt/vt.c:2370
Code: 08 2c 01 0f 8e b1 00 00 00 4c 8b bd 08 ff ff ff 48 63 db 44 89 e9 41 0f b7 84 24 c8 03 00 00 48 01 db d1 e9 49 01 df 4c 89 ff <f3> 66 ab 49 8d bc 24 78 04 00 00 b8 ff ff 37 00 48 89 fa 48 c1 e0
RSP: 0018:ffffc90001f778b0 EFLAGS: 00010202
RAX: 0000000000000720 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 1ffff11012914279 RSI: ffffffff83ed596d RDI: 000000010000000e
RBP: ffffc90001f779d0 R08: ffff8880963b2140 R09: ffff8880963b29d0
R10: fffffbfff14f69d0 R11: ffffffff8a7b4e87 R12: ffff8880948a1000
R13: 0000000000000002 R14: 0000000000000001 R15: 000000010000000e
FS:  0000000001b9b880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000024b1800 CR3: 000000009fd6a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (98):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/01/21 12:16 upstream d96d875ef5dd 8eda0b95 .config console log report syz C ci-upstream-kasan-gce-selinux-root
2020/01/21 03:11 upstream def9d2780727 d2557fb5 .config console log report syz C ci-upstream-kasan-gce-root
2020/01/20 16:00 upstream def9d2780727 d2557fb5 .config console log report syz C ci-upstream-kasan-gce
2019/12/10 10:22 upstream 6794862a16ef 4b83c8fb .config console log report syz C ci-upstream-kasan-gce-selinux-root
2019/12/10 01:35 upstream e42617b825f8 b31eda3d .config console log report syz C ci-upstream-kasan-gce-root
2019/12/09 17:18 upstream e42617b825f8 b31eda3d .config console log report syz C ci-upstream-kasan-gce
2020/01/20 02:13 upstream 8f8972a3127f 0342f8c7 .config console log report syz C ci-upstream-kasan-gce-386
2019/12/09 17:18 upstream e42617b825f8 b31eda3d .config console log report syz C ci-upstream-kasan-gce-386
2020/02/03 16:52 linux-next 2747d5fdab78 93e5e335 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2019/12/22 10:07 linux-next 7ddd09fc4b74 bc586918 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/05/26 21:24 upstream 9cb1fd0efd19 9072c126 .config console log report ci-upstream-kasan-gce
2020/05/18 13:10 upstream b9bbe6ed63b2 684d3606 .config console log report ci-upstream-kasan-gce-selinux-root
2020/05/17 11:36 upstream 5a9ffb954a39 37bccd4e .config console log report ci-upstream-kasan-gce-selinux-root
2020/05/16 02:36 upstream 12bf0b632ed0 37bccd4e .config console log report ci-upstream-kasan-gce-selinux-root
2020/05/15 23:58 upstream 1ae7efb38854 d7f9fffa .config console log report ci-upstream-kasan-gce-selinux-root
2020/05/08 00:31 upstream 6e7f2eacf098 6c70a1c2 .config console log report ci-upstream-kasan-gce
2020/05/07 10:09 upstream a811c1fa0a02 98cbd87b .config console log report ci-upstream-kasan-gce
2020/05/06 19:03 upstream 3c40cdb0e93e 4618eb2d .config console log report ci-upstream-kasan-gce
2020/05/05 13:31 upstream 47cf1b422e60 4b76dd25 .config console log report ci-upstream-kasan-gce
2020/05/05 10:24 upstream 47cf1b422e60 9941337c .config console log report ci-upstream-kasan-gce
2020/05/04 10:15 upstream 0e698dfa2822 58ae5e18 .config console log report ci-upstream-kasan-gce-root
2020/05/04 08:29 upstream 0e698dfa2822 58ae5e18 .config console log report ci-upstream-kasan-gce
2020/04/26 03:22 upstream b2768df24ec4 99b258dd .config console log report ci-upstream-kasan-gce-root
2020/04/25 12:19 upstream 5ef58e290782 b8bb8e5f .config console log report ci-upstream-kasan-gce
2020/04/25 11:15 upstream 5ef58e290782 b8bb8e5f .config console log report ci-upstream-kasan-gce
2020/04/24 13:15 upstream b4f633221f0a 03d97a1b .config console log report ci-upstream-kasan-gce
2020/04/23 20:41 upstream c578ddb39e56 2e44d63e .config console log report ci-upstream-kasan-gce
2020/04/22 14:56 upstream 18bf34080c4c 2e44d63e .config console log report ci-upstream-kasan-gce
2020/04/18 10:31 upstream 90280eaa88ac 435c6d53 .config console log report ci-upstream-kasan-gce-selinux-root
2020/03/13 03:24 upstream 3cc6e2c599cd d850e9d0 .config console log report ci-upstream-kasan-gce-root
2020/02/22 01:57 upstream b0dd1eb220c0 2ffa6679 .config console log report ci-upstream-kasan-gce
2020/02/20 20:47 upstream ca7e1fd1026c bd2a74a3 .config console log report ci-upstream-kasan-gce
2020/02/18 15:36 upstream b1da3acc781c 012fbc32 .config console log report ci-upstream-kasan-gce
2020/02/16 18:42 upstream db70e26e33ee cf914200 .config console log report ci-upstream-kasan-gce
2020/02/16 18:30 upstream db70e26e33ee cf914200 .config console log report ci-upstream-kasan-gce-root
2020/02/15 16:41 upstream 2019fc96af22 5d7b90f1 .config console log report ci-upstream-kasan-gce
2020/02/08 13:26 upstream f757165705e9 06150bf1 .config console log report ci-upstream-kasan-gce
2020/02/02 14:50 upstream 94f2630b1897 93e5e335 .config console log report ci-upstream-kasan-gce-selinux-root
2020/02/01 13:09 upstream 26dca6dbd62d 0eb59c27 .config console log report ci-upstream-kasan-gce
2020/01/28 17:06 upstream b0be0eff1a5a c8e81ce4 .config console log report ci-upstream-kasan-gce
2020/01/28 10:09 upstream b0be0eff1a5a 56cd6c9b .config console log report ci-upstream-kasan-gce
2020/01/27 19:34 upstream d5226fa6dbae 56cd6c9b .config console log report ci-upstream-kasan-gce
2020/01/26 21:48 upstream a45ea48e2bcd dd56146d .config console log report ci-upstream-kasan-gce-selinux-root
2020/01/26 20:32 upstream a45ea48e2bcd dd56146d .config console log report ci-upstream-kasan-gce-selinux-root
2020/01/22 22:16 upstream dbab40bdb42c 3334d684 .config console log report ci-upstream-kasan-gce
2020/01/22 13:15 upstream d96d875ef5dd 8eda0b95 .config console log report ci-upstream-kasan-gce
2020/01/15 23:34 upstream 51d69817519f f9b69507 .config console log report ci-upstream-kasan-gce
2020/01/15 21:40 upstream 51d69817519f f9b69507 .config console log report ci-upstream-kasan-gce
2020/01/15 18:07 upstream 95e20af9fb9c f9b69507 .config console log report ci-upstream-kasan-gce-root
2019/12/09 09:17 upstream e42617b825f8 1508f453 .config console log report ci-upstream-kasan-gce
2020/06/24 14:55 upstream 7ae77150d94d 54566aff .config console log report ci-upstream-kasan-gce-386
2020/05/26 22:46 upstream 9cb1fd0efd19 9072c126 .config console log report ci-upstream-kasan-gce-386
2020/05/14 11:32 upstream 24085f70a6e1 2d572622 .config console log report ci-upstream-kasan-gce-386
2020/05/14 07:48 upstream 24085f70a6e1 a885920d .config console log report ci-upstream-kasan-gce-386
2020/05/14 00:12 upstream 24085f70a6e1 a885920d .config console log report ci-upstream-kasan-gce-386
2020/05/13 12:07 upstream 24085f70a6e1 9a6d42fb .config console log report ci-upstream-kasan-gce-386
2020/05/03 03:28 upstream f66ed1ebbfde 5457883a .config console log report ci-upstream-kasan-gce-386
2020/01/16 11:49 upstream f5ae2ea6347a f9b69507 .config console log report ci-upstream-kasan-gce-386
2020/01/15 23:45 upstream 51d69817519f f9b69507 .config console log report ci-upstream-kasan-gce-386
2020/01/15 23:24 upstream 51d69817519f f9b69507 .config console log report ci-upstream-kasan-gce-386
2019/12/07 12:33 upstream eea2d5da29e3 85f26751 .config console log report ci-upstream-kasan-gce-386
2020/05/19 12:24 linux-next ac935d227366 6d882fd2 .config console log report ci-upstream-linux-next-kasan-gce-root
2020/05/13 02:43 linux-next ac935d227366 a44eb8f7 .config console log report ci-upstream-linux-next-kasan-gce-root
2020/05/01 12:30 linux-next ac935d227366 a4d01b80 .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.