syzbot


INFO: task hung in generic_file_write_iter
Status: fixed on 2019/03/06 07:43
Reported-by: syzbot+9933e4476f365f5d5a1b@syzkaller.appspotmail.com
Fix commit: 04906b2f542c blockdev: Fix livelocks on loop device
First crash: 1191d, last: 1053d
duplicates (7):
Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
INFO: rcu detected stall in sys_creat 98 1005d 1096d 0/22 closed as dup on 2019/01/20 01:52
INFO: task hung in vfat_lookup 38 1014d 1142d 0/22 closed as dup on 2018/09/05 22:07
INFO: task hung in inode_sleep_on_writeback 8 1013d 1299d 0/22 closed as dup on 2019/02/06 13:32
INFO: task hung in __blkdev_get (2) 11 1015d 1139d 0/22 closed as dup on 2018/09/08 15:48
INFO: task hung in blkdev_put 320 984d 1411d 0/22 closed as dup on 2018/11/11 08:29
INFO: task hung in do_rmdir (2) 3 1015d 1150d 0/22 closed as dup on 2018/09/11 15:01
INFO: task hung in fat_fallocate 1 1271d 1271d 0/22 closed as dup on 2019/01/20 01:49
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-49 INFO: task hung in generic_file_write_iter 2 1156d 1157d 0/3 auto-closed as invalid on 2019/02/22 14:09

Sample crash report:

Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2018/12/03 13:01 upstream 2595646791c3 819002b0 .config log report
ci-upstream-kasan-gce-root 2018/07/17 18:30 upstream 30b06abfb92b 6d5bd5b5 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/28 19:19 linux-next 8c60c36d0b8c 6f9b225a .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/24 06:38 linux-next 8c60c36d0b8c a8292de9 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/10/07 18:32 linux-next 12ffaa1197f5 8b311eaf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/24 11:59 linux-next 89cf55353308 4969639c .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/22 19:35 linux-next 89cf55353308 8cc079c3 .config log report