RDX: 000000000000000d RSI: 0000000000000000 RDI: 0000000000138025
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000014
R13: 00000000004c0c8f R14: 00000000004d11e8 R15: 0000000000000000
==================================================================
BUG: KMSAN: kernel-infoleak in copy_to_user include/linux/uaccess.h:184 [inline]
BUG: KMSAN: kernel-infoleak in semctl_main+0x1361/0x5980 ipc/sem.c:1448
CPU: 1 PID: 9179 Comm: syz-executor0 Not tainted 4.18.0-rc4+ #27
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1e0 lib/dump_stack.c:113
 kmsan_report+0x195/0x2c0 mm/kmsan/kmsan.c:982
 kmsan_internal_check_memory+0x18e/0x210 mm/kmsan/kmsan.c:1046
 kmsan_copy_to_user+0x83/0xe0 mm/kmsan/kmsan_hooks.c:479
 copy_to_user include/linux/uaccess.h:184 [inline]
 semctl_main+0x1361/0x5980 ipc/sem.c:1448
 ksys_semctl+0x5ef/0x730 ipc/sem.c:1663
 __do_sys_semctl ipc/sem.c:1687 [inline]
 __se_sys_semctl ipc/sem.c:1685 [inline]
 __x64_sys_semctl+0x11e/0x170 ipc/sem.c:1685
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x455ab9
Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f1343402c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000042
RAX: ffffffffffffffda RBX: 00007f13434036d4 RCX: 0000000000455ab9
RDX: 000000000000000d RSI: 0000000000000000 RDI: 0000000000138025
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000014
R13: 00000000004c0c8f R14: 00000000004d11e8 R15: 0000000000000000

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:256 [inline]
 kmsan_internal_alloc_meta_for_pages+0x157/0x730 mm/kmsan/kmsan.c:694
 kmsan_alloc_page+0x80/0xe0 mm/kmsan/kmsan_hooks.c:250
 __alloc_pages_nodemask+0x105b/0x6320 mm/page_alloc.c:4409
 alloc_pages_current+0x6b1/0x970 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:494 [inline]
 __vmalloc_area_node mm/vmalloc.c:1689 [inline]
 __vmalloc_node_range+0x8bf/0x1170 mm/vmalloc.c:1754
 __vmalloc_node mm/vmalloc.c:1799 [inline]
 __vmalloc_node_flags_caller+0x12b/0x140 mm/vmalloc.c:1821
 kvmalloc_node+0x330/0x370 mm/util.c:432
 kvmalloc include/linux/mm.h:557 [inline]
 kvmalloc_array include/linux/mm.h:575 [inline]
 semctl_main+0xcf2/0x5980 ipc/sem.c:1429
 ksys_semctl+0x5ef/0x730 ipc/sem.c:1663
 __do_sys_semctl ipc/sem.c:1687 [inline]
 __se_sys_semctl ipc/sem.c:1685 [inline]
 __x64_sys_semctl+0x11e/0x170 ipc/sem.c:1685
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x63/0xe7

Bytes 4096-4109 of 4110 are uninitialized
Memory access starts at ffffc90014eea000
==================================================================