syzbot


possible deadlock in shmem_fallocate (4)
Status: fixed on 2020/09/16 22:51
Reported-by: syzbot+7a0d9d0b26efefe61780@syzkaller.appspotmail.com
Fix commit: 3e338d3c95c7 staging: android: ashmem: Fix lockdep warning for write operation
First crash: 663d, last: 446d

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config
similar bugs (7):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 possible deadlock in shmem_fallocate (2) 2 519d 587d 0/1 auto-closed as invalid on 2020/09/14 02:25
upstream possible deadlock in shmem_fallocate 8087 1460d 1504d 0/22 closed as invalid on 2017/11/05 09:38
linux-4.19 possible deadlock in shmem_fallocate 1 809d 808d 0/1 auto-closed as invalid on 2019/11/29 05:22
android-49 possible deadlock in shmem_fallocate C 2441 683d 920d 0/3 public: reported C repro on 2019/04/11 08:44
android-414 possible deadlock in shmem_fallocate C 7876 684d 921d 0/1 public: reported C repro on 2019/04/11 00:00
upstream possible deadlock in shmem_fallocate (3) 1 773d 769d 0/22 auto-closed as invalid on 2019/11/05 02:34
upstream possible deadlock in shmem_fallocate (2) C 1325 956d 1164d 12/22 fixed on 2019/03/28 12:00

Sample crash report:

Crashes (81):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2020/07/14 03:06 upstream 11ba468877bb f90ec899 .config log report syz C
ci-upstream-kasan-gce-386 2020/07/14 03:19 upstream 11ba468877bb f90ec899 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/07/14 02:44 upstream 11ba468877bb f90ec899 .config log report syz
ci-upstream-kasan-gce-root 2020/07/14 00:31 upstream 11ba468877bb f90ec899 .config log report syz
ci-upstream-kasan-gce 2020/07/28 10:04 upstream 92ed30191993 cb93dc6a .config log report
ci-upstream-kasan-gce 2020/07/24 17:09 upstream f37e99aca03f 554af388 .config log report
ci-upstream-kasan-gce 2020/07/21 15:54 upstream 4fa640dc5230 d88894e6 .config log report
ci-upstream-kasan-gce 2020/07/18 03:48 upstream 8882572675c1 9c812472 .config log report
ci-upstream-kasan-gce 2020/07/17 08:26 upstream f8456690ba8e 54b3c45e .config log report
ci-upstream-kasan-gce-root 2020/07/13 19:10 upstream 11ba468877bb f90ec899 .config log report
ci-upstream-kasan-gce-smack-root 2020/07/07 01:20 upstream 7cc2a8ea1048 51095195 .config log report
ci-upstream-kasan-gce 2020/07/02 16:02 upstream cd77006e01b3 bed10395 .config log report
ci-upstream-kasan-gce 2020/07/01 02:22 upstream 9ebcfadb0610 917afeaa .config log report
ci-upstream-kasan-gce-smack-root 2020/06/24 21:55 upstream 7ae77150d94d 54566aff .config log report
ci-upstream-kasan-gce-smack-root 2020/06/13 16:33 upstream 7ae77150d94d f4724dd3 .config log report
ci-upstream-kasan-gce-smack-root 2020/06/13 13:13 upstream 7ae77150d94d f4724dd3 .config log report
ci-upstream-kasan-gce 2020/06/09 13:43 upstream 7ae77150d94d 0d60b78a .config log report
ci-upstream-kasan-gce-selinux-root 2020/06/05 15:54 upstream 435faf5c218a 2420d1bc .config log report
ci-upstream-kasan-gce 2020/05/13 08:55 upstream 24085f70a6e1 a44eb8f7 .config log report
ci-upstream-kasan-gce-selinux-root 2020/04/25 03:46 upstream b4f633221f0a 03d97a1b .config log report
ci-upstream-kasan-gce-smack-root 2020/04/24 09:43 upstream c578ddb39e56 2e44d63e .config log report
ci-upstream-kasan-gce 2020/04/18 19:58 upstream 90280eaa88ac 365fba24 .config log report
ci-upstream-kasan-gce-selinux-root 2020/04/02 13:10 upstream 919dce24701f a34e2c33 .config log report
ci-upstream-kasan-gce-selinux-root 2020/03/30 13:40 upstream 7111951b8d49 c8d1cc20 .config log report
ci-upstream-kasan-gce-smack-root 2020/03/29 15:36 upstream 906c40438bb6 05736b29 .config log report
ci-upstream-kasan-gce-root 2020/03/27 11:54 upstream f3e69428b5e2 7d95711b .config log report
ci-upstream-kasan-gce 2020/03/24 18:48 upstream 76ccd234269b 68660b21 .config log report
ci-upstream-kasan-gce 2020/03/24 16:19 upstream 979e52ca0469 68660b21 .config log report
ci-upstream-kasan-gce 2020/03/22 13:04 upstream b74b991fb8b9 78267cec .config log report
ci-upstream-kasan-gce 2020/03/17 12:35 upstream fb33c6510d55 749688d2 .config log report
ci-upstream-kasan-gce-smack-root 2020/03/08 19:36 upstream 378fee2e6b12 2e9971bb .config log report
ci-upstream-kasan-gce 2020/03/07 23:48 upstream 63849c8f4107 2e9971bb .config log report
ci-upstream-kasan-gce 2020/03/06 17:44 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce 2020/03/06 16:03 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce 2020/03/06 10:21 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce 2020/03/06 06:51 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce 2020/03/06 05:13 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce 2020/03/06 02:56 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce 2020/03/06 02:01 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce-smack-root 2020/03/06 01:52 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce 2020/03/05 18:38 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce 2020/03/05 15:27 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce 2020/03/05 11:22 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce 2020/03/05 09:58 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce 2020/03/05 07:36 upstream 63623fd44972 c88c7b75 .config log report
ci-upstream-kasan-gce 2020/02/28 06:19 upstream f8788d86ab28 59b57593 .config log report
ci-upstream-kasan-gce 2020/02/28 04:38 upstream f8788d86ab28 59b57593 .config log report
ci-upstream-kasan-gce 2020/02/27 21:12 upstream f8788d86ab28 59b57593 .config log report
ci-upstream-kasan-gce 2020/02/27 09:47 upstream f8788d86ab28 59b57593 .config log report
ci-upstream-kasan-gce 2020/02/25 23:35 upstream f8788d86ab28 59b57593 .config log report
ci-upstream-kasan-gce-smack-root 2020/01/29 15:29 upstream b3a608222336 5ed23f9a .config log report
ci-upstream-kasan-gce-smack-root 2020/01/29 05:41 upstream c677124e631d c8e81ce4 .config log report
ci-upstream-kasan-gce 2020/01/28 18:53 upstream b0be0eff1a5a c8e81ce4 .config log report
ci-upstream-kasan-gce 2020/01/24 18:23 upstream 4703d9119972 2e95ab33 .config log report
ci-qemu-upstream 2020/01/12 13:49 upstream 6327edceb62b 53faa9fe .config log report
ci-upstream-kasan-gce 2019/12/30 22:08 upstream fd6988496e79 af6b8ef8 .config log report
ci-upstream-kasan-gce 2019/12/24 08:22 upstream 46cf053efec6 be5c2c81 .config log report
ci-upstream-linux-next-kasan-gce-root 2020/04/27 12:46 linux-next ac935d227366 0ce7569e .config log report
ci-upstream-linux-next-kasan-gce-root 2020/04/08 05:08 linux-next 5798bd75ab13 db9bcd4b .config log report
ci-upstream-linux-next-kasan-gce-root 2020/03/24 00:03 linux-next 770fbb32d34e 84f999d6 .config log report