(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Thu, 09 May 2019 09:37:08 +0000 bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=203559 > > Bug ID: 203559 > Summary: usercopy_abort triggered by build_test_sglist > Product: Memory Management > Version: 2.5 > Kernel Version: 5.1 > Hardware: x86-64 > OS: Linux > Tree: Mainline > Status: NEW > Severity: low > Priority: P1 > Component: Other > Assignee: akpm@xxxxxxxxxxxxxxxxxxxx > Reporter: mihai.dontu@xxxxxxxxx > Regression: No > > Created attachment 282687 > --> https://bugzilla.kernel.org/attachment.cgi?id=282687&action=edit > kernel config > > I have CONFIG_CRYPTO_FIPS and CONFIG_HARDENED_USERCOPY_PAGESPAN enabled from an > experiment I forgot about, that started triggering a crash very early at boot > with kernel 5.1: > > usercopy: Kernel memory overwrite attempt detected to spans multiple pages > (offset 0, size 372)! > ------------[ cut here]------------ > kernel BUG at mm/usercopy.c:102! > invalid opcode: 0000 [#1] PREEMPT SMP PTI > CPU: 0 PID: 42 Comm: cryptomgr_test Trainted: G T 5.1.0-gentoo #1 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-1.fc28 > 04/01/2014 > RIP: 0010:usercopy_abort+0x87/0x89 > Code: c3 ae 48 c7 c6 c9 9c ba ae 41 55 48 c7 c7 38 9e bb ae 48 0f 45 d1 48 c7 > c1 51 > 9d bb ae 50 48 0f 45 f1 4c 89 e1 e8 fb 50 e8 ff <0f> 0b 49 89 d8 31 c9 44 > 89 > ea 31 f6 48 c7 c7 9a 9d bb ae e8 61 ff > ... > Call Trace: > __check_object_size.cold+0x16/0xa6 > build_test_sglist+0x283/0x370 > ? skcipher_walk_done+0x105/0x220 > ? ecb_crypt+0xa5/0x110 > build_cipher_test_sglist+0xa0/0x120 > test_skcipher_vec_cfg+0x1c4/0x6e0 > ... > > The information above is from a screenshot, thus some opcodes or offsets might > be wrong. > > The 5.0.13 kernel does not have this issue. > > -- > You are receiving this mail because: > You are the assignee for the bug.
