syzbot


kernel BUG in mpage_prepare_extent_to_map
Status: upstream: reported C repro on 2021/05/31 07:15
Reported-by: syzbot+99043e2052d9c50c81fc@syzkaller.appspotmail.com
First crash: 146d, last: 12h51m

Cause bisection: introduced by (bisect log) :
commit 68e9dc29f8f42c79d2a3755223ed910ce36b4ae2
Author: Yuyang Du <duyuyang@gmail.com>
Date: Mon May 6 08:19:36 2019 +0000

  locking/lockdep: Check redundant dependency only when CONFIG_LOCKDEP_SMALL

Crash: BUG: MAX_STACK_TRACE_ENTRIES too low! (log)
Repro: C syz .config
similar bugs (7):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 kernel BUG at fs/ext4/inode.c:LINE! C 44 5d02h 644d 0/1 upstream: reported C repro on 2020/01/14 12:13
linux-4.19 kernel BUG at fs/ext4/inode.c:LINE! C 1 29d 371d 0/1 upstream: reported C repro on 2020/10/14 01:19
upstream kernel BUG at fs/ext4/inode.c:LINE! C done 9 294d 419d 21/22 fixed on 2021/03/10 01:48
android-49 kernel BUG at fs/ext4/inode.c:LINE! C 280 993d 923d 0/3 public: reported C repro on 2019/04/11 08:44
linux-4.14 kernel BUG at fs/ext4/inode.c:LINE! C 2 11d 299d 0/1 upstream: reported C repro on 2020/12/25 03:51
android-414 kernel BUG at fs/ext4/inode.c:LINE! 1 1068d 920d 0/1 auto-closed as invalid on 2019/05/15 13:37
android-44 kernel BUG at fs/ext4/inode.c:LINE! C 110 1010d 923d 0/2 public: reported C repro on 2019/04/11 08:44

Sample crash report:

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/08/15 12:48 upstream 0aa78d17099b 1ba81399 .config log report syz C
ci-upstream-kasan-gce-root 2021/07/12 22:17 upstream 7fef2edf7cc7 1ba81399 .config log report syz C
Crashes (13):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/06/12 21:55 upstream ad347abe4a98 1ba81399 .config log report syz C kernel BUG in ext4_writepages
ci-qemu-upstream 2021/05/27 04:59 upstream 7ac3a1c1ae51 858ea628 .config log report info kernel BUG in mpage_prepare_extent_to_map
ci-upstream-kasan-gce-selinux-root 2021/10/10 14:43 upstream 7fd2bf83d59a 838e7e2c .config log report info kernel BUG in ext4_da_get_block_prep
ci-upstream-kasan-gce-root 2021/10/04 10:26 upstream 9e1ff307c779 ce697b49 .config log report info kernel BUG in ext4_da_get_block_prep
ci-upstream-net-this-kasan-gce 2021/10/16 15:50 net fac3cb82a54a 0c5d9412 .config log report info kernel BUG in ext4_da_get_block_prep
ci-upstream-net-this-kasan-gce 2021/10/11 03:02 net 732b74d64704 838e7e2c .config log report info kernel BUG in ext4_da_get_block_prep
ci-upstream-net-kasan-gce 2021/10/10 14:08 net-next 0182d0788cd6 838e7e2c .config log report info kernel BUG in ext4_da_get_block_prep
ci2-upstream-usb 2021/10/19 20:57 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 8ef1e58783b9 466b7db1 .config log report info kernel BUG in ext4_da_get_block_prep
ci2-upstream-usb 2021/10/17 15:20 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 660a92a59b9e 0c5d9412 .config log report info kernel BUG in ext4_da_get_block_prep
ci2-upstream-usb 2021/10/12 14:49 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 620b74d01b9d 08362356 .config log report info kernel BUG in ext4_da_get_block_prep
ci-upstream-linux-next-kasan-gce-root 2021/09/23 07:19 linux-next bc5aa70f2699 8cac236e .config log report info kernel BUG in ext4_da_get_block_prep
ci-upstream-linux-next-kasan-gce-root 2021/09/10 12:59 linux-next aa14a3016182 5ae8508a .config log report info kernel BUG in ext4_da_get_block_prep
ci-upstream-linux-next-kasan-gce-root 2021/09/10 10:35 linux-next aa14a3016182 5ae8508a .config log report info kernel BUG in ext4_da_get_block_prep