syzbot

 sign-in | mailing list | source | docs
🐞 Open [1007] ≡ Subsystems 🐞 Fixed [4886] 🐞 Invalid [11689] ⬇ Missing Backports [77] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes 💬 Send us feedback

WARNING in ovl_real_fdget_meta

Status: auto-obsoleted due to no activity on 2022/12/30 12:10
Reported-by: syzbot+032bc63605089a199d30@syzkaller.appspotmail.com
First crash: 1601d, last: 1194d
Cause bisection: introduced by (bisect log) :
commit 387e3746d01c34457d6a73688acd90428725070b
Author: Amir Goldstein <amir73il@gmail.com>
Date: Fri Jun 7 14:24:38 2019 +0000

  locks: eliminate false positive conflicts for write lease

Crash: WARNING in ovl_real_fdget_meta (log)
Repro: C syz .config
  
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
WARNING in ovl_real_fdget_meta 3 (6) 2019/07/27 02:41
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 WARNING in ovl_real_fdget_meta C error 37 291d 1430d 0/1 upstream: reported C repro on 2020/01/11 04:27
▶ ▼ Last patch testing requests (11)
Created Duration User Patch Repo Result
2022/12/30 05:31 20m retest repro linux-next OK log
2022/12/30 04:31 20m retest repro linux-next OK log
2022/09/22 23:29 19m retest repro upstream OK log
2022/09/22 20:29 15m retest repro upstream OK log
2022/09/22 17:29 16m retest repro upstream OK log
2022/09/22 14:29 16m retest repro upstream OK log
2022/09/22 10:29 16m retest repro upstream OK log
2022/09/21 05:29 18m retest repro linux-next OK log
2022/09/21 03:29 16m retest repro linux-next OK log
2022/09/21 01:29 9m retest repro linux-next report log
2019/07/26 16:31 19m amir73il@gmail.com https://github.com/amir73il/linux.git ovl-check-nested-overlap error OK

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6847 at fs/overlayfs/file.c:81 ovl_change_flags fs/overlayfs/file.c:81 [inline]
WARNING: CPU: 1 PID: 6847 at fs/overlayfs/file.c:81 ovl_real_fdget_meta+0x49c/0x530 fs/overlayfs/file.c:132
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 6847 Comm: syz-executor194 Not tainted 5.8.0-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+0x18f/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:231
 __warn.cold+0x20/0x4a kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:ovl_change_flags fs/overlayfs/file.c:81 [inline]
RIP: 0010:ovl_real_fdget_meta+0x49c/0x530 fs/overlayfs/file.c:132
Code: ff 4c 89 ff e8 45 de 2a ff e9 ff fc ff ff e8 3b de 2a ff e9 c5 fc ff ff 4c 89 f7 e8 9e de 2a ff e9 5d fd ff ff e8 74 cc ea fe <0f> 0b 41 bd fb ff ff ff e9 fd fc ff ff e8 22 de 2a ff e9 84 fb ff
RSP: 0018:ffffc90005ee7a78 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000002000 RCX: ffffffff82897279
RDX: ffff88808ae902c0 RSI: ffffffff828974ac RDI: 0000000000000005
RBP: 0000000004048000 R08: 0000000000000000 R09: ffff88808ae90ba0
R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880a7476d00
R13: ffff8880860d73f8 R14: 000000000000a000 R15: ffff8880a7476d80
 ovl_real_fdget fs/overlayfs/file.c:139 [inline]
 ovl_splice_read+0x83/0x1f0 fs/overlayfs/file.c:396
 do_splice_to+0x10b/0x170 fs/splice.c:870
 splice_direct_to_actor+0x307/0x980 fs/splice.c:950
 do_splice_direct+0x1b3/0x280 fs/splice.c:1059
 do_sendfile+0x55f/0xd40 fs/read_write.c:1540
 __do_sys_sendfile64 fs/read_write.c:1601 [inline]
 __se_sys_sendfile64 fs/read_write.c:1587 [inline]
 __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1587
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4403d9
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 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffe4a9344e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004403d9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 000000000000bd96 R11: 0000000000000246 R12: 0000000000401be0
R13: 0000000000401c70 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (115):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/08/16 17:07 upstream 4b6c093e21d3 424dd8e7 .config console log report syz C ci-upstream-kasan-gce-root
2020/08/15 14:09 upstream 7fca4dee610d 424dd8e7 .config console log report syz C ci-upstream-kasan-gce-selinux-root
2020/08/15 07:20 upstream 7fca4dee610d 424dd8e7 .config console log report syz C ci-upstream-kasan-gce-smack-root
2020/04/22 20:18 upstream 18bf34080c4c 2e44d63e .config console log report syz C ci-upstream-kasan-gce-selinux-root
2020/04/22 18:41 upstream 18bf34080c4c 2e44d63e .config console log report syz C ci-upstream-kasan-gce-smack-root
2020/04/21 07:16 upstream ae83d0b416db 98a9f9e6 .config console log report syz C ci-upstream-kasan-gce-root
2020/01/11 17:55 upstream bef1d88263ff 4c04afaa .config console log report syz C ci-upstream-kasan-gce-selinux-root
2020/01/11 09:00 upstream e69ec487b2c7 4de4e9f0 .config console log report syz C ci-upstream-kasan-gce-root
2019/12/25 19:41 upstream 46cf053efec6 be5c2c81 .config console log report syz C ci-upstream-kasan-gce-selinux-root
2019/12/25 19:39 upstream 46cf053efec6 be5c2c81 .config console log report syz C ci-upstream-kasan-gce-root
2019/07/24 09:37 upstream c6dd78fcb8ee de453f34 .config console log report syz C ci-upstream-kasan-gce-selinux-root
2019/07/24 09:33 upstream c6dd78fcb8ee de453f34 .config console log report syz C ci-upstream-kasan-gce-smack-root
2019/07/24 09:02 upstream c6dd78fcb8ee de453f34 .config console log report syz C ci-upstream-kasan-gce-root
2020/08/19 03:49 linux-next 83c52faab7b1 e1c29030 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/04/23 21:10 linux-next ac935d227366 2e44d63e .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/01/01 20:14 linux-next 7ddd09fc4b74 25a0186e .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2019/07/24 09:36 linux-next 6d21a41b7b1f de453f34 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2020/09/03 13:48 upstream fc3abb53250a abf9ba4f .config console log report ci-upstream-kasan-gce-selinux-root
2020/09/03 08:13 upstream fc3abb53250a abf9ba4f .config console log report ci-upstream-kasan-gce-smack-root
2020/09/03 00:04 upstream 9c7d619be5a0 abf9ba4f .config console log report ci-upstream-kasan-gce-root
2020/09/01 06:05 upstream f75aef392f86 d5a3ae1f .config console log report ci-upstream-kasan-gce-root
2020/08/30 05:05 upstream 1127b219ce94 d5a3ae1f .config console log report ci-upstream-kasan-gce-root
2020/05/25 18:45 upstream 9cb1fd0efd19 30927cd7 .config console log report ci-upstream-kasan-gce-smack-root
2020/05/25 18:43 upstream 9cb1fd0efd19 30927cd7 .config console log report ci-upstream-kasan-gce-root
2020/05/20 19:08 upstream 115a54162a6c 1255f02a .config console log report ci-upstream-kasan-gce-smack-root
2020/05/20 06:56 upstream 3c9e66568ad4 67fa1f59 .config console log report ci-upstream-kasan-gce-smack-root
2020/05/20 01:23 upstream 3c9e66568ad4 67fa1f59 .config console log report ci-upstream-kasan-gce-smack-root
2020/05/18 08:35 upstream b9bbe6ed63b2 37bccd4e .config console log report ci-upstream-kasan-gce-root
2020/05/14 08:03 upstream 24085f70a6e1 a885920d .config console log report ci-upstream-kasan-gce-selinux-root
2020/05/04 04:10 upstream 262f7a6b8317 58ae5e18 .config console log report ci-upstream-kasan-gce-root
2020/04/08 00:23 upstream 763dede1b248 db9bcd4b .config console log report ci-upstream-kasan-gce-selinux-root
2020/04/07 14:14 upstream 7e63420847ae 99a96044 .config console log report ci-upstream-kasan-gce-smack-root
2020/03/11 13:28 upstream e94148454103 35f53e45 .config console log report ci-upstream-kasan-gce-root
2020/03/11 04:54 upstream f35111a94654 35f53e45 .config console log report ci-upstream-kasan-gce-selinux-root
2020/03/02 04:25 upstream 63623fd44972 c88c7b75 .config console log report ci-upstream-kasan-gce-smack-root
2020/02/29 05:04 upstream f8788d86ab28 59b57593 .config console log report ci-upstream-kasan-gce-selinux-root
2020/02/27 03:28 upstream f8788d86ab28 59b57593 .config console log report ci-upstream-kasan-gce-root
2020/02/23 13:50 upstream 54dedb5b571d 2c36e7a7 .config console log report ci-upstream-kasan-gce-smack-root
2020/02/18 21:43 upstream b1da3acc781c 012fbc32 .config console log report ci-upstream-kasan-gce-root
2020/02/17 09:42 upstream 11a48a5a18c6 1f448cd6 .config console log report ci-upstream-kasan-gce-root
2020/02/10 15:32 upstream bb6d3fb354c5 18847f55 .config console log report ci-upstream-kasan-gce-smack-root
2020/01/27 02:52 upstream a45ea48e2bcd dd56146d .config console log report ci-upstream-kasan-gce-root
2020/01/21 22:07 upstream d96d875ef5dd 8eda0b95 .config console log report ci-upstream-kasan-gce-root
2020/01/20 19:37 upstream def9d2780727 d2557fb5 .config console log report ci-upstream-kasan-gce-root
2020/01/19 05:51 upstream 244dc2689085 bc8bc756 .config console log report ci-upstream-kasan-gce-smack-root
2020/01/18 11:27 upstream 25e73aadf297 3de7aabb .config console log report ci-upstream-kasan-gce-smack-root
2020/01/18 11:27 upstream 25e73aadf297 3de7aabb .config console log report ci-upstream-kasan-gce-smack-root
2020/01/17 14:10 upstream f4353c3e2aaf 3de7aabb .config console log report ci-upstream-kasan-gce-selinux-root
2020/01/17 14:09 upstream f4353c3e2aaf 3de7aabb .config console log report ci-upstream-kasan-gce-root
2020/01/17 09:47 upstream f4353c3e2aaf 3de7aabb .config console log report ci-upstream-kasan-gce-smack-root
2020/01/17 09:46 upstream f4353c3e2aaf 3de7aabb .config console log report ci-upstream-kasan-gce-smack-root
2020/01/17 09:42 upstream f4353c3e2aaf 3de7aabb .config console log report ci-upstream-kasan-gce-root
2020/01/16 18:44 upstream f5ae2ea6347a 3de7aabb .config console log report ci-qemu-upstream
2020/01/16 18:39 upstream f5ae2ea6347a 3de7aabb .config console log report ci-upstream-kasan-gce-selinux-root
2020/01/16 18:39 upstream f5ae2ea6347a 3de7aabb .config console log report ci-upstream-kasan-gce-root
2020/01/16 07:00 upstream 51d69817519f f9b69507 .config console log report ci-upstream-kasan-gce-selinux-root
2020/01/16 06:56 upstream 51d69817519f f9b69507 .config console log report ci-upstream-kasan-gce-smack-root
2020/09/02 10:30 linux-next b36c969764ab abf9ba4f .config console log report ci-upstream-linux-next-kasan-gce-root
2020/05/23 04:04 linux-next c11d28ab4a69 9682898d .config console log report ci-upstream-linux-next-kasan-gce-root
2020/04/07 19:47 linux-next 5fab54423a0a db9bcd4b .config console log report ci-upstream-linux-next-kasan-gce-root
2020/02/29 00:18 linux-next bdc5461b23ca 59b57593 .config console log report ci-upstream-linux-next-kasan-gce-root
2020/02/24 11:28 linux-next bdc5461b23ca d801cb02 .config console log report ci-upstream-linux-next-kasan-gce-root
2020/02/14 05:44 linux-next 9f01828e9e16 c5ed587f .config console log report ci-upstream-linux-next-kasan-gce-root
2020/01/18 11:22 linux-next 2747d5fdab78 3de7aabb .config console log report ci-upstream-linux-next-kasan-gce-root
2020/01/17 12:16 linux-next 2747d5fdab78 3de7aabb .config console log report ci-upstream-linux-next-kasan-gce-root
2020/01/17 09:55 linux-next 2747d5fdab78 3de7aabb .config console log report ci-upstream-linux-next-kasan-gce-root
2020/01/17 09:54 linux-next 2747d5fdab78 3de7aabb .config console log report ci-upstream-linux-next-kasan-gce-root
2020/01/16 06:54 linux-next 5b483a1a0ea1 f9b69507 .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.