------- Comment From [email protected] 2017-09-04 07:03 EDT------- This looks like the bug that was fixed by Martin just recently:
commit 8ab867cb0806a8e195de161fd8883a0578d1d050 Author: Martin Schwidefsky <[email protected]> Date: Thu Aug 31 13:18:22 2017 +0200 s390/mm: fix BUG_ON in crst_table_upgrade A 31-bit compat process can force a BUG_ON in crst_table_upgrade with specific, invalid mmap calls, e.g. mmap((void*) 0x7fff8000, 0x10000, 3, 32, -1, 0) The arch_get_unmapped_area[_topdown] functions miss an if condition in the decision to do a page table upgrade. Fixes: 9b11c7912d00 ("s390/mm: simplify arch_get_unmapped_area[_topdown]") Cc: <[email protected]> # v4.12+ Signed-off-by: Martin Schwidefsky <[email protected]> -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1712724 Title: s390 zKVM complains about "illegal operation" to s390/mm/pgalloc.c To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1712724/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
