syzbot


possible deadlock in shmem_fallocate (4)
Status: upstream: reported C repro on 2019/12/26 21:25
Reported-by: syzbot+7a0d9d0b26efefe61780@syzkaller.appspotmail.com
Fix commit: staging: android: ashmem: Fix lockdep warning for write operation
Patched on: [], missing on: [ci-qemu-upstream ci-qemu-upstream-386 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386 ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb]
First crash: 225d, last: 8d12h

Cause bisection: the bug happens on the oldest tested release
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config
similar bugs (7):
Kernel Title Repro Bisected Count Last Reported Patched Status
linux-4.19 possible deadlock in shmem_fallocate (2) 2 80d 148d 0/1 upstream: reported on 2020/03/10 04:27
upstream possible deadlock in shmem_fallocate 8087 1022d 1066d 0/17 closed as invalid on 2017/11/05 09:38
linux-4.19 possible deadlock in shmem_fallocate 1 370d 370d 0/1 auto-closed as invalid on 2019/11/29 05:22
android-49 possible deadlock in shmem_fallocate C 2441 245d 482d 0/3 public: reported C repro on 2019/04/11 08:44
android-414 possible deadlock in shmem_fallocate C 7876 245d 482d 0/1 public: reported C repro on 2019/04/11 00:00
upstream possible deadlock in shmem_fallocate (3) 1 334d 330d 0/17 auto-closed as invalid on 2019/11/05 02:34
upstream possible deadlock in shmem_fallocate (2) C 1325 518d 726d 12/17 fixed on 2019/03/28 12:00

Sample crash report:

Crashes (81):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro Maintainers
ci-upstream-kasan-gce 2020/07/14 03:06 upstream 11ba4688 f90ec899 .config log report syz C akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-386 2020/07/14 03:19 upstream 11ba4688 f90ec899 .config log report syz C akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-selinux-root 2020/07/14 02:44 upstream 11ba4688 f90ec899 .config log report syz akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-root 2020/07/14 00:31 upstream 11ba4688 f90ec899 .config log report syz akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/07/28 10:04 upstream 92ed3019 cb93dc6a .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/07/24 17:09 upstream f37e99ac 554af388 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/07/21 15:54 upstream 4fa640dc d88894e6 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/07/18 03:48 upstream 88825726 9c812472 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/07/17 08:26 upstream f8456690 54b3c45e .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-root 2020/07/13 19:10 upstream 11ba4688 f90ec899 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/07/07 01:20 upstream 7cc2a8ea 51095195 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/07/02 16:02 upstream cd77006e bed10395 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/07/01 02:22 upstream 9ebcfadb 917afeaa .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/06/24 21:55 upstream 7ae77150 54566aff .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/06/13 16:33 upstream 7ae77150 f4724dd3 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/06/13 13:13 upstream 7ae77150 f4724dd3 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/06/09 13:43 upstream 7ae77150 0d60b78a .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-selinux-root 2020/06/05 15:54 upstream 435faf5c 2420d1bc .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/05/13 08:55 upstream 24085f70 a44eb8f7 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-selinux-root 2020/04/25 03:46 upstream b4f63322 03d97a1b .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/04/24 09:43 upstream c578ddb3 2e44d63e .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/04/18 19:58 upstream 90280eaa 365fba24 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-selinux-root 2020/04/02 13:10 upstream 919dce24 a34e2c33 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-selinux-root 2020/03/30 13:40 upstream 7111951b c8d1cc20 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/03/29 15:36 upstream 906c4043 05736b29 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-root 2020/03/27 11:54 upstream f3e69428 7d95711b .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/24 18:48 upstream 76ccd234 68660b21 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/24 16:19 upstream 979e52ca 68660b21 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/22 13:04 upstream b74b991f 78267cec .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/17 12:35 upstream fb33c651 749688d2 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/03/08 19:36 upstream 378fee2e 2e9971bb .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/07 23:48 upstream 63849c8f 2e9971bb .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/06 17:44 upstream 63623fd4 c88c7b75 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/06 16:03 upstream 63623fd4 c88c7b75 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/06 10:21 upstream 63623fd4 c88c7b75 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/06 06:51 upstream 63623fd4 c88c7b75 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/06 05:13 upstream 63623fd4 c88c7b75 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/06 02:56 upstream 63623fd4 c88c7b75 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/06 02:01 upstream 63623fd4 c88c7b75 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/03/06 01:52 upstream 63623fd4 c88c7b75 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/05 18:38 upstream 63623fd4 c88c7b75 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/05 15:27 upstream 63623fd4 c88c7b75 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/05 11:22 upstream 63623fd4 c88c7b75 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/05 09:58 upstream 63623fd4 c88c7b75 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/03/05 07:36 upstream 63623fd4 c88c7b75 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/02/28 06:19 upstream f8788d86 59b57593 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/02/28 04:38 upstream f8788d86 59b57593 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/02/27 21:12 upstream f8788d86 59b57593 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/02/27 09:47 upstream f8788d86 59b57593 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/02/25 23:35 upstream f8788d86 59b57593 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/01/29 15:29 upstream b3a60822 5ed23f9a .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce-smack-root 2020/01/29 05:41 upstream c677124e c8e81ce4 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/01/28 18:53 upstream b0be0eff c8e81ce4 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2020/01/24 18:23 upstream 4703d911 2e95ab33 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-qemu-upstream 2020/01/12 13:49 upstream 6327edce 53faa9fe .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2019/12/30 22:08 upstream fd698849 af6b8ef8 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-kasan-gce 2019/12/24 08:22 upstream 46cf053e be5c2c81 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-linux-next-kasan-gce-root 2020/04/27 12:46 linux-next ac935d22 0ce7569e .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-linux-next-kasan-gce-root 2020/04/08 05:08 linux-next 5798bd75 db9bcd4b .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org
ci-upstream-linux-next-kasan-gce-root 2020/03/24 00:03 linux-next 770fbb32 84f999d6 .config log report akpm@linux-foundation.org, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org