On Thu 16-06-16 17:46:57, Sergey Senozhatsky wrote: > Hello, > > [..] > [ 272.687656] vma ffff8800b855a5a0 start 00007f3576d58000 end 00007f3576f66000 > next ffff8800b977d2c0 prev ffff8800bdfb1860 mm ffff8801315ff200 > prot 8000000000000025 anon_vma ffff8800b7e583b0 vm_ops (null) > pgoff 7f3576d58 file (null) private_data (null) > flags: 0x100073(read|write|mayread|maywrite|mayexec|account) > [ 272.691793] ------------[ cut here ]------------ > [ 272.692820] kernel BUG at mm/rmap.c:1251! Is this? page_add_new_anon_rmap: VM_BUG_ON_VMA(address < vma->vm_start || address >= vma->vm_end, vma) [...] > [ 272.727842] BUG: sleeping function called from invalid context at include/linux/sched.h:2960 If yes then I am not sure we can do much about the this part. BUG_ON in an atomic context is unfortunate but the BUG_ON points out a real bug so we shouldn't drop it because of the potential atomic context. The above VM_BUG_ON should definitely be addressed. I thought that Vlastimil has pointed out some issues with the khugepaged lock inconsistencies which might lead to issues like this. -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>