Kernel bugs

We have implemented Continuous integration#Kernel testing to check if any recent kernel changes break CRIU, to catch those before they appear in the vanilla kernel. This article documents Linux kernel bugs found using this method.

Found bugs

Note that the list is probably incomplete; there were a few bugs found and fixed before we cared to document it here.

Date	Bug description
20140924	linux-next: cgroup_mount() falls asleep forever
20150316	tcp_metrics: fix wrong lockdep annotations
20150928	skbuff: Fix skb checksum partial check
20160512	kernfs: kernfs_sop_show_path: don't return 0 after seq_dentry call
20160531	autofs: don't stuck in a loop if vfs_write returns an error
20161024	mm: Add a user_ns owner to mm_struct and fix ptrace_may_access
20161114	BUG: unable to handle kernel NULL pointer dereference in __sk_mem_raise_allocated()
20161114	linux-next: net->netns_ids is used after calling idr_destroy for it
20170124	seccomp: dump core when using SECCOMP_RET_KILL
20170310	linux-next: WARNING: CPU: 1 PID: 24110 at fs/dcache.c:1445 umount_check+0x81/0x90
20170310	linux-next: WARNING: CPU: 0 PID: 1 at lib/refcount.c:114 refcount_inc+0x37/0x40
20170321	linux-next: x86: Unable to run x32 processes on the x86_64 kernel
20170417	Re: cgroup: avoid attaching a cgroup root to two different superblocks
20170419	Re: irq/affinity: Fix extra vecs calculation
20170516	Re: [net-next,v2,1/3] net/sock: factor out dequeue/peek with offset code

See also

• Continuous integration