syzbot


KASAN: use-after-free Read in tctx_task_work (2)
Status: upstream: reported C repro on 2021/08/19 08:10
Reported-by: syzbot+9c3492b27d10dc49ffa6@syzkaller.appspotmail.com
First crash: 58d, last: 1d16h

Cause bisection: introduced by (bisect log) [no-op commit]:
commit b9fc8b4a591811546fec2dbef7e9f809362100c9
Author: Grant Seltzer <grantseltzer@gmail.com>
Date: Mon Feb 22 19:58:46 2021 +0000

  bpf: Add kernel/modules BTF presence checks to bpftool feature command

Crash: WARNING in kvm_wait (log)
Repro: C syz .config
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: use-after-free Read in tctx_task_work 2 232d 229d 22/22 fixed on 2021/04/09 19:46
Patch testing requests:
Created Duration User Patch Repo Result
2021/08/19 11:13 18m asml.silence@gmail.com https://github.com/isilence/linux.git syztest_ctx_tw OK
2021/08/19 10:04 16m asml.silence@gmail.com git://git.kernel.dk/linux-block for-5.15/io_uring report log

Sample crash report:

Crashes (76):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2021/08/18 23:00 linux-next f26c3abc432a a2fe1cb5 .config log report syz C KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/21 04:10 linux-next 86ed57fd8c93 b599f2fc .config log report syz KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/23 09:00 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/22 21:13 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/22 18:04 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/22 11:33 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/22 07:25 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/22 06:04 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/22 02:08 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/21 19:05 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/21 15:28 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/21 06:06 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/21 00:22 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 22:04 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 20:07 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 17:19 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 15:44 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 14:30 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 14:06 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 13:52 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 13:34 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 12:47 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 12:32 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 11:29 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 11:23 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 11:15 linux-next 86ed57fd8c93 b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 04:39 linux-next 33e65b1f975c b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/20 04:08 linux-next 33e65b1f975c b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 19:33 linux-next 33e65b1f975c b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 18:10 linux-next 33e65b1f975c b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 17:46 linux-next 33e65b1f975c b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 17:32 linux-next 33e65b1f975c b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 16:45 linux-next 33e65b1f975c b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 16:35 linux-next 33e65b1f975c b599f2fc .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 13:29 linux-next 33e65b1f975c a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 13:18 linux-next 33e65b1f975c a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 12:31 linux-next 33e65b1f975c a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 11:58 linux-next 33e65b1f975c a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 11:35 linux-next 33e65b1f975c a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 10:36 linux-next 33e65b1f975c a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 06:19 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/19 03:48 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/18 15:39 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/18 15:27 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/18 15:06 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/18 15:06 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/18 14:14 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/18 14:07 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/18 14:06 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/18 14:03 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/18 13:59 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/18 13:58 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/18 13:30 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/18 13:09 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-linux-next-kasan-gce-root 2021/08/18 11:36 linux-next f26c3abc432a a2fe1cb5 .config log report info KASAN: use-after-free Read in tctx_task_work
ci-upstream-kmsan-gce 2021/10/14 04:38 https://github.com/google/kmsan.git master c7f84f4e1147 5462d470 .config log report info KMSAN: uninit-value in tctx_task_work
ci-upstream-kmsan-gce 2021/10/13 22:11 https://github.com/google/kmsan.git master c7f84f4e1147 5462d470 .config log report info KMSAN: uninit-value in tctx_task_work
ci-upstream-kmsan-gce 2021/10/12 16:45 https://github.com/google/kmsan.git master c7f84f4e1147 838e7e2c .config log report info KMSAN: uninit-value in tctx_task_work
ci-upstream-kmsan-gce 2021/10/12 13:30 https://github.com/google/kmsan.git master c7f84f4e1147 838e7e2c .config log report info KMSAN: uninit-value in tctx_task_work
ci-upstream-kmsan-gce 2021/10/09 13:44 https://github.com/google/kmsan.git master c7f84f4e1147 838e7e2c .config log report info KMSAN: uninit-value in tctx_task_work
ci-upstream-kmsan-gce 2021/10/09 11:51 https://github.com/google/kmsan.git master c7f84f4e1147 838e7e2c .config log report info KMSAN: uninit-value in tctx_task_work
ci-upstream-kmsan-gce 2021/10/08 16:24 https://github.com/google/kmsan.git master c7f84f4e1147 efe0f24d .config log report info KMSAN: uninit-value in tctx_task_work
ci-upstream-kmsan-gce 2021/10/08 00:10 https://github.com/google/kmsan.git master c7f84f4e1147 efe0f24d .config log report info KMSAN: uninit-value in tctx_task_work
ci-upstream-kmsan-gce 2021/10/07 17:02 https://github.com/google/kmsan.git master c7f84f4e1147 efe0f24d .config log report info KMSAN: uninit-value in tctx_task_work
ci-upstream-kmsan-gce 2021/10/05 16:39 https://github.com/google/kmsan.git master c7f84f4e1147 0a63fd36 .config log report info KMSAN: uninit-value in tctx_task_work
ci-upstream-kmsan-gce 2021/10/05 15:24 https://github.com/google/kmsan.git master c7f84f4e1147 0a63fd36 .config log report info KMSAN: uninit-value in tctx_task_work