Re: INFO: rcu detected stall in vfs_rmdir

2018-04-14 Thread Tetsuo Handa
Infinite loop inside shrink_dcache_parent() due to lack of cond_resched(). I can reproduce this issue by running the reproducer on one CPU (using "taskset -c 0"). Reverting commit 32785c0539b7e96f ("fs/dcache.c: add cond_resched() in shrink_dentry_list()") solves this issue. #syz dup: INFO: rcu

Re: INFO: rcu detected stall in vfs_rmdir

2018-04-14 Thread Tetsuo Handa
Infinite loop inside shrink_dcache_parent() due to lack of cond_resched(). I can reproduce this issue by running the reproducer on one CPU (using "taskset -c 0"). Reverting commit 32785c0539b7e96f ("fs/dcache.c: add cond_resched() in shrink_dentry_list()") solves this issue. #syz dup: INFO: rcu

INFO: rcu detected stall in vfs_rmdir

2018-04-13 Thread syzbot
Hello, syzbot hit the following crash on upstream commit 16e205cf42da1f497b10a4a24f563e6c0d574eec (Fri Apr 13 03:56:10 2018 +) Merge tag 'drm-fixes-for-v4.17-rc1' of git://people.freedesktop.org/~airlied/linux syzbot dashboard link:

INFO: rcu detected stall in vfs_rmdir

2018-04-13 Thread syzbot
Hello, syzbot hit the following crash on upstream commit 16e205cf42da1f497b10a4a24f563e6c0d574eec (Fri Apr 13 03:56:10 2018 +) Merge tag 'drm-fixes-for-v4.17-rc1' of git://people.freedesktop.org/~airlied/linux syzbot dashboard link: