syzbot


KASAN: vmalloc-out-of-bounds Write in pcpu_alloc
Status: fixed on 2020/02/14 01:19
Reported-by: syzbot+59b7daa4315e07a994f1@syzkaller.appspotmail.com
Fix commit: 253a496d8e57 kasan: don't assume percpu shadow allocations will succeed
First crash: 736d, last: 711d

Cause bisection: introduced by (bisect log) :
commit 0609ae011deb41c9629b7f5fd626dfa1ac9d16b0
Author: Daniel Axtens <dja@axtens.net>
Date: Sun Dec 1 01:55:00 2019 +0000

  x86/kasan: support KASAN_VMALLOC

Crash: BUG: unable to handle kernel paging request in pcpu_alloc (log)
Repro: C syz .config
Patch testing requests:
Created Duration User Patch Repo Result
2019/12/05 08:32 0m dja@axtens.net patch linux-next error

Sample crash report:

Crashes (31):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-bpf-kasan-gce 2019/12/03 19:55 bpf b3c424eb6a1a ae13a849 .config log report syz C
ci-upstream-kasan-gce-root 2019/12/11 15:59 upstream 6794862a16ef 101194eb .config log report
ci-upstream-net-this-kasan-gce 2019/12/21 08:56 net 307201a3d494 bc586918 .config log report
ci-upstream-bpf-kasan-gce 2019/12/20 08:20 bpf 0fd260056ef8 e30cbdae .config log report
ci-upstream-bpf-kasan-gce 2019/12/18 00:23 bpf e47304232b37 a6bc9c88 .config log report
ci-upstream-bpf-kasan-gce 2019/12/16 19:19 bpf 5133498f4ad1 b80769fc .config log report
ci-upstream-bpf-kasan-gce 2019/12/13 03:41 bpf fe3300897cbf 08003f64 .config log report
ci-upstream-bpf-kasan-gce 2019/12/10 04:27 bpf e42617b825f8 4b83c8fb .config log report
ci-upstream-net-this-kasan-gce 2019/12/09 04:06 net 0fc75219fe9a 1508f453 .config log report
ci-upstream-bpf-kasan-gce 2019/12/05 18:54 bpf 8f9081c92523 4fb74474 .config log report
ci-upstream-bpf-kasan-gce 2019/12/05 10:40 bpf ef8c84effce3 b2088328 .config log report
ci-upstream-net-this-kasan-gce 2019/12/04 19:16 net 2f23cd42e19c b2088328 .config log report
ci-upstream-bpf-kasan-gce 2019/12/03 19:28 bpf b3c424eb6a1a ae13a849 .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/28 08:17 bpf-next 7c8dce4b1661 be5c2c81 .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/23 18:00 bpf-next f9e6bfdbaf0c be5c2c81 .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/23 05:17 bpf-next f9e6bfdbaf0c 8b967267 .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/22 15:48 bpf-next f9e6bfdbaf0c 8b967267 .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/21 19:59 bpf-next f9e6bfdbaf0c bc586918 .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/20 11:48 bpf-next 5bf2fc1f9c88 e30cbdae .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/19 23:41 bpf-next a352a82496d1 36650b4b .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/18 23:08 bpf-next 58d8dc2a98f5 79b211f7 .config log report
ci-upstream-net-kasan-gce 2019/12/18 00:03 net-next 6f6dded1385c a6bc9c88 .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/17 15:18 bpf-next dbd8f6bae6f4 d13d7958 .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/17 14:20 bpf-next dbd8f6bae6f4 d13d7958 .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/17 05:58 bpf-next dbd8f6bae6f4 d13d7958 .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/17 05:53 bpf-next dbd8f6bae6f4 d13d7958 .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/15 19:53 bpf-next a06bf42f5a95 eef6e580 .config log report
ci-upstream-bpf-next-kasan-gce 2019/12/14 13:59 bpf-next a06bf42f5a95 eef6e580 .config log report
ci-upstream-net-kasan-gce 2019/12/11 00:07 net-next 08cbc75f9602 5a5826a1 .config log report
ci-upstream-net-kasan-gce 2019/12/06 23:37 net-next 596cf45cbf6e 85f26751 .config log report
ci-upstream-net-kasan-gce 2019/12/05 05:40 net-next 596cf45cbf6e b2088328 .config log report