syzbot


INFO: task hung in blkdev_put (4)
Status: upstream: reported C repro on 2020/10/03 13:09
Reported-by: syzbot+9a29d5e745bd7523c851@syzkaller.appspotmail.com
First crash: 461d, last: 6h13m

Cause bisection: introduced by (bisect log) :
commit 2da22da573481cc4837e246d0eee4d518b3f715e
Author: Mike Christie <mchristi@redhat.com>
Date: Tue Aug 13 16:39:52 2019 +0000

  nbd: fix zero cmd timeout handling v2

Crash: INFO: task hung in blkdev_put (log)
Repro: C syz .config
similar bugs (13):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in blkdev_put (3) 1 540d 540d 0/22 auto-closed as invalid on 2020/06/25 13:28
android-49 INFO: task hung in blkdev_put (2) 3 703d 722d 0/3 auto-closed as invalid on 2020/03/14 12:22
linux-4.19 INFO: task hung in blkdev_put C 18 12d 452d 0/1 upstream: reported C repro on 2020/07/23 21:33
upstream INFO: task hung in blkdev_put 320 982d 1408d 0/22 closed as dup on 2018/11/11 08:29
linux-4.14 INFO: task hung in blkdev_put 2 765d 915d 0/1 auto-closed as invalid on 2020/01/12 01:56
linux-4.14 INFO: task hung in blkdev_put (3) C 11 7d04h 414d 0/1 upstream: reported C repro on 2020/08/30 21:52
android-49 INFO: task hung in blkdev_put 220 901d 918d 0/3 auto-closed as invalid on 2019/10/25 08:47
linux-4.14 INFO: task hung in blkdev_put (2) 2 569d 607d 0/1 auto-closed as invalid on 2020/07/26 14:38
android-414 INFO: task hung in blkdev_put 119 687d 920d 0/1 auto-closed as invalid on 2020/03/30 04:06
android-44 INFO: task hung in blkdev_put 26 987d 918d 0/2 auto-closed as invalid on 2019/08/03 02:42
android-44 INFO: task hung in blkdev_put (2) 3 699d 776d 0/2 auto-closed as invalid on 2020/03/18 19:27
upstream INFO: task hung in blkdev_put (2) 2 694d 740d 0/22 auto-closed as invalid on 2020/02/22 04:07
upstream INFO: task can't die in blkdev_put 3 332d 370d 0/22 auto-closed as invalid on 2021/01/19 09:44

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-selinux-root 2021/01/19 15:55 upstream 1e2a199f6ccd 1b88c6d5 .config log report syz C
ci-upstream-kasan-gce-selinux-root 2020/12/20 13:50 upstream 467f8165a2b0 1b88c6d5 .config log report syz C
Crashes (73):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2021/10/11 00:31 upstream efb52a7d9511 838e7e2c .config log report syz C INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/09/24 16:35 upstream f9e36107ec70 8cac236e .config log report syz C INFO: task hung in blkdev_put
ci-upstream-kasan-gce-selinux-root 2021/09/24 12:17 upstream f9e36107ec70 8cac236e .config log report syz C INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/08/30 00:00 upstream 64b4fc45bea6 be2c130d .config log report syz C INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/08/15 09:32 upstream ba31f97d43be 2489ab88 .config log report syz C INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/07/31 12:45 upstream c7d102232649 6c236867 .config log report syz C INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/06/25 07:10 upstream 4a09d388f2ab 0edbbe31 .config log report syz C INFO: task hung in blkdev_put
ci-upstream-kasan-gce-selinux-root 2021/05/29 06:06 upstream 5ff2756afde0 858ea628 .config log report syz C INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/04/26 04:44 upstream 9f4ad9e425a1 2a82f1b3 .config log report syz C INFO: task hung in blkdev_put
ci-upstream-kasan-gce-selinux-root 2021/02/19 12:37 upstream f40ddce88593 14052202 .config log report syz C INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/02/15 14:00 upstream f40ddce88593 98682e5e .config log report syz C INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/02/09 10:07 upstream e0756cfc7d7c 2bd9619f .config log report syz C INFO: task hung in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/09/12 15:38 linux-next aa14a3016182 5ae8508a .config log report syz C INFO: task hung in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/09/01 22:21 linux-next c1b13fe76e95 7eb7e152 .config log report syz C INFO: task hung in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/07/18 21:02 linux-next c1a6d08348fc f115ae98 .config log report syz C INFO: task hung in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/04/02 23:22 linux-next 454c576c3f5e 6a81331a .config log report syz C INFO: task hung in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/01/21 20:42 linux-next bc085f8fc88f d4f4eca5 .config log report syz C INFO: task hung in blkdev_put
ci-upstream-kasan-gce-selinux-root 2020/09/29 13:03 upstream fb0155a09b02 1b88c6d5 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2020/10/30 23:57 linux-next 4e78c578cb98 a6e3ac3b .config log report syz C
ci-upstream-kasan-gce-root 2021/10/18 18:06 upstream cf52ad5ff16c 0c5d9412 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/10/15 02:00 upstream 26d657410983 7aa5fe41 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-selinux-root 2021/10/06 18:00 upstream 60a9483534ed 0a63fd36 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/10/06 06:10 upstream f6274b06e326 0a63fd36 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/10/02 22:59 upstream ab2a7a35c4e7 db0f5787 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/09/26 06:28 upstream a5e0aceabef6 8cac236e .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/09/16 20:07 upstream ff1ffd71d5f0 aae492f2 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/09/08 04:00 upstream a2b28235335f 064c9eb7 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/09/06 11:17 upstream 0319b848b155 d236a457 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/09/03 14:42 upstream a9c9a6f741cd f62a5829 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/09/02 20:31 upstream 4ac6d90867a4 15cea0a3 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/09/02 11:21 upstream 4ac6d90867a4 7eb7e152 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/08/30 03:00 upstream 90ac80dcd313 be2c130d .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/08/28 06:22 upstream 1a6436f37512 d5a29e53 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/08/18 04:37 upstream 794c7931a242 a2fe1cb5 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/08/17 14:47 upstream a2824f19e606 33c26cb7 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/08/15 06:53 upstream ba31f97d43be 2489ab88 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/08/01 11:11 upstream f3438b4c4e69 6c236867 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/07/17 15:54 upstream d980cc0620ae f115ae98 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-selinux-root 2021/07/13 20:52 upstream 40226a3d96ef fa0594c3 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/07/04 02:55 upstream 3dbdb38e2869 55aa55c2 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/06/28 18:22 upstream 62fb9874f5da 9d2ab5df .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/06/15 02:44 upstream 009c9aa5be65 1ba81399 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/06/02 15:04 upstream 231bc5390667 0740de69 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/05/31 10:48 upstream 8124c8a6b353 325a8dab .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/04/30 07:43 upstream d2b6f8a17919 77e2b668 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/04/20 19:20 upstream 7af08140979a c0ced557 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-selinux-root 2021/03/22 11:20 upstream 0d02ec6b3136 bea32f74 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/03/11 12:29 upstream a74e6a014c9d c2ca1f2a .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-root 2021/02/24 02:32 upstream 3b9cdafb5358 fcc6d71b .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/02/19 12:57 upstream f40ddce88593 14052202 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-smack-root 2021/01/21 01:31 upstream 75439bc439e0 d4f4eca5 .config log report info INFO: task hung in blkdev_put
ci-upstream-kasan-gce-selinux-root 2020/11/20 05:59 upstream 131ad0b6f529 0767f13f .config log report info
ci-upstream-kasan-gce-selinux-root 2020/11/20 05:59 upstream 131ad0b6f529 0767f13f .config log report info
ci-upstream-kasan-gce-selinux-root 2020/11/20 05:58 upstream 131ad0b6f529 0767f13f .config log report info
ci-upstream-kasan-gce-root 2020/11/20 05:58 upstream 3494d58865ad 0767f13f .config log report info
ci-upstream-kasan-gce-selinux-root 2020/10/10 21:49 upstream 6f2f486d57c4 4a77ae0b .config log report info
ci-upstream-kasan-gce-root 2020/10/09 10:33 upstream 3d006ee42dde 92390980 .config log report info
ci-upstream-kasan-gce-root 2020/07/19 03:32 upstream 6a70f89cc58f 9c812472 .config log report
ci-upstream-kasan-gce-root 2020/07/14 17:36 upstream 0dc589da873b ce4c95b3 .config log report
ci-upstream-linux-next-kasan-gce-root 2021/09/19 04:11 linux-next 9004fd387338 70b76c1d .config log report info INFO: task can't die in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/09/02 12:37 linux-next c1b13fe76e95 15cea0a3 .config log report info INFO: task can't die in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/09/01 00:05 linux-next 52c7b727581f 7eb7e152 .config log report info INFO: task can't die in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/08/14 21:15 linux-next 4b358aabb93a 2489ab88 .config log report info INFO: task can't die in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/07/23 13:50 linux-next 90d856e71443 bc5f1d88 .config log report info INFO: task can't die in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/06/06 14:07 linux-next a1f92694393a 500c2339 .config log report info INFO: task can't die in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/04/01 03:40 linux-next 931294922e65 6a81331a .config log report info INFO: task can't die in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/03/29 10:28 linux-next 931294922e65 a8529b82 .config log report info INFO: task can't die in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/03/27 10:33 linux-next 931294922e65 a8529b82 .config log report info INFO: task can't die in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/03/22 18:12 linux-next e3128d2f068e 8092f30d .config log report info INFO: task can't die in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2021/03/17 02:10 linux-next 0f4b0bb396f6 fdb2bb2c .config log report info INFO: task can't die in blkdev_put
ci-upstream-linux-next-kasan-gce-root 2020/11/20 08:20 linux-next 95065cb54210 0767f13f .config log report info