Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x185/0x1d0 lib/dump_stack.c:53 dump_header+0x2cc/0x16f0 mm/oom_kill.c:437 ================================================================== BUG: KMSAN: uninit-value in core_kernel_text kernel/extable.c:77 [inline] BUG: KMSAN: uninit-value in kernel_text_address+0x248/0x3a0 kernel/extable.c:127 CPU: 1 PID: 3439 Comm: syzkaller639899 Not tainted 4.16.0+ #83 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x14a/0x1d0 lib/dump_stack.c:53 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067 __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:676 core_kernel_text kernel/extable.c:77 [inline] kernel_text_address+0x248/0x3a0 kernel/extable.c:127 __kernel_text_address+0x34/0xe0 kernel/extable.c:107 show_trace_log_lvl+0x954/0x1030 arch/x86/kernel/dumpstack.c:175 show_stack+0xfc/0x150 arch/x86/kernel/dumpstack.c:236 __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x185/0x1d0 lib/dump_stack.c:53 dump_header+0x2cc/0x16f0 mm/oom_kill.c:437 oom_kill_process+0x341/0x2160 mm/oom_kill.c:866 out_of_memory+0x1700/0x1da0 mm/oom_kill.c:1080 __alloc_pages_may_oom mm/page_alloc.c:3415 [inline] __alloc_pages_slowpath mm/page_alloc.c:4116 [inline] __alloc_pages_nodemask+0x4ee3/0x5dc0 mm/page_alloc.c:4272 alloc_pages_current+0x6b5/0x970 mm/mempolicy.c:2055 alloc_pages include/linux/gfp.h:494 [inline] __vmalloc_area_node mm/vmalloc.c:1699 [inline] __vmalloc_node_range+0x80f/0x1140 mm/vmalloc.c:1759 __vmalloc_node mm/vmalloc.c:1804 [inline] __vmalloc_node_flags_caller+0x102/0x120 mm/vmalloc.c:1826 kvmalloc_node mm/util.c:428 [inline] kvmalloc include/linux/mm.h:541 [inline] vmemdup_user+0x1c8/0x430 mm/util.c:186 __sctp_setsockopt_connectx net/sctp/socket.c:1346 [inline] sctp_setsockopt_connectx_old net/sctp/socket.c:1364 [inline] sctp_setsockopt+0x119e/0x10820 net/sctp/socket.c:4125 sock_common_setsockopt+0x136/0x170 net/core/sock.c:2975 SYSC_setsockopt+0x4b8/0x570 net/socket.c:1849 SyS_setsockopt+0x76/0xa0 net/socket.c:1828 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 RIP: 0033:0x4400e9 RSP: 002b:00007ffd2ec18b88 EFLAGS: 00000213 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400e9 RDX: 000000000000006b RSI: 0000000000000084 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 000000006168703f R09: 00000000006ca018 R10: 0000000020000000 R11: 0000000000000213 R12: 0000000000401610 R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000 Local variable description: ----oc.i.i@__alloc_pages_nodemask Variable was created at: __alloc_pages_nodemask+0x10f/0x5dc0 mm/page_alloc.c:4238 alloc_pages_current+0x6b5/0x970 mm/mempolicy.c:2055 ==================================================================