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 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x87b/0xab0 lib/fault-inject.c:149 ================================================================== 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: 5639 Comm: syz-executor5 Not tainted 4.16.0+ #81 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 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x87b/0xab0 lib/fault-inject.c:149 should_failslab+0x279/0x2a0 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc_node mm/slub.c:2663 [inline] __kmalloc_node+0x22e/0x1190 mm/slub.c:3832 kmalloc_node include/linux/slab.h:554 [inline] kzalloc_node include/linux/slab.h:712 [inline] __get_vm_area_node+0x28e/0x810 mm/vmalloc.c:1402 __vmalloc_node_range+0x2ad/0x1140 mm/vmalloc.c:1754 __vmalloc_node mm/vmalloc.c:1804 [inline] __vmalloc+0xe2/0x100 mm/vmalloc.c:1810 bpf_prog_alloc+0xb0/0x4b0 kernel/bpf/core.c:84 __get_filter+0x1c4/0x7d0 net/core/filter.c:1289 sk_attach_filter+0x72/0x2e0 net/core/filter.c:1324 sock_setsockopt+0x344f/0x4830 net/core/sock.c:928 SYSC_setsockopt+0x344/0x570 net/socket.c:1845 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: 0033:0x455259 RSP: 002b:00007f26562f4c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f26562f56d4 RCX: 0000000000455259 RDX: 000000000000001a RSI: 0000000000000001 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000000000010 R09: 0000000000000000 R10: 0000000020004ff0 R11: 0000000000000246 R12: 0000000000000015 R13: 000000000000052a R14: 00000000006fac90 R15: 0000000000000000 Local variable description: ----wq@lookup_slow Variable was created at: lookup_slow+0x74/0x760 fs/namei.c:1607 walk_component+0x2d6/0xb20 fs/namei.c:1763 ==================================================================