do_iter_readv_writev+0x81c/0xa20 include/linux/fs.h:1778 do_iter_write+0x30d/0xd50 fs/read_write.c:959 ------------[ cut here ]------------ vfs_writev fs/read_write.c:1004 [inline] do_writev+0x3be/0x820 fs/read_write.c:1039 kmsan_get_shadow_address_inline(fffffe0000051f08, 8, 1) WARNING: CPU: 1 PID: 7946 at mm/kmsan/kmsan_instr.c:153 kmsan_get_shadow_address_inline+0x192/0x2e0 mm/kmsan/kmsan_instr.c:153 Kernel panic - not syncing: panic_on_warn set ... __do_sys_writev fs/read_write.c:1112 [inline] __se_sys_writev fs/read_write.c:1109 [inline] __x64_sys_writev+0xe1/0x120 fs/read_write.c:1109 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x455ab9 RSP: 002b:00007f132cf55c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f132cf566d4 RCX: 0000000000455ab9 RDX: 0000000000000001 RSI: 0000000020000140 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014 R13: 00000000004c08be R14: 00000000004d4280 R15: 0000000000000001 CPU: 1 PID: 7946 Comm: syz-executor7 Not tainted 4.17.0+ #17 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <#DB> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x185/0x1d0 lib/dump_stack.c:113 panic+0x3d0/0x990 kernel/panic.c:184 __warn+0x40f/0x580 kernel/panic.c:536 report_bug+0x72a/0x880 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] do_error_trap+0x1c1/0x620 arch/x86/kernel/traps.c:298 do_invalid_op+0x46/0x50 arch/x86/kernel/traps.c:317 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:997 RIP: 0010:kmsan_get_shadow_address_inline+0x192/0x2e0 mm/kmsan/kmsan_instr.c:153 RSP: 0018:fffffe0000051da8 EFLAGS: 00010082 RAX: 0000000000000037 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffffc900029a1000 RSI: 000000000000b7f5 RDI: 000000000000b7f6 RBP: fffffe0000051df0 R08: 0000002bf9ec3631 R09: ffffffff8b54ae7b R10: 00000000ffffff00 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000008 R15: ffff880123099d40 __msan_poison_alloca+0xa7/0x1d0 mm/kmsan/kmsan_instr.c:582 do_debug+0x5b/0x800 arch/x86/kernel/traps.c:723 debug+0x28/0x50 arch/x86/entry/entry_64.S:1156 RIP: 0010:do_strncpy_from_user lib/strncpy_from_user.c:45 [inline] RIP: 0010:strncpy_from_user+0x184/0x4b0 lib/strncpy_from_user.c:118 RSP: 0018:ffff8801a52efc40 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 78696d2f7665642f RCX: ffffffffffffff01 RDX: 00007fffdfffffe0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff8801a52efcd8 R08: 00000000010000c0 R09: 0000000000000003 R10: 0000000000000002 R11: ffffffff81ca4f10 R12: ffff88018fdd2020 R13: 0000000000000fe0 R14: 0000000000000000 R15: 0000000020000000 getname_flags+0x1dc/0xaa0 fs/namei.c:151 getname+0x55/0x60 fs/namei.c:211 do_sys_open+0x52a/0x960 fs/open.c:1095 __do_sys_openat fs/open.c:1128 [inline] __se_sys_openat fs/open.c:1122 [inline] __x64_sys_openat+0x129/0x170 fs/open.c:1122 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x455ab9 RSP: 002b:00007fc52a7a1c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fc52a7a26d4 RCX: 0000000000455ab9 RDX: 00000000000e0200 RSI: 0000000020000000 RDI: ffffffffffffff9c RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004c04a9 R14: 00000000004cfe70 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 7963 Comm: syz-executor6 Not tainted 4.17.0+ #17 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+0x185/0x1d0 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x87b/0xab0 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3069 [inline] prepare_alloc_pages mm/page_alloc.c:4328 [inline] __alloc_pages_nodemask+0x600/0x5cc0 mm/page_alloc.c:4367 __alloc_pages include/linux/gfp.h:458 [inline] __alloc_pages_node include/linux/gfp.h:471 [inline] alloc_pages_node include/linux/gfp.h:485 [inline] kmsan_alloc_meta_for_pages+0x8d/0x710 mm/kmsan/kmsan.c:796 kmsan_alloc_page+0x87/0xe0 mm/kmsan/kmsan.c:1067 __alloc_pages_nodemask+0xf7b/0x5cc0 mm/page_alloc.c:4404 alloc_pages_current+0x6b1/0x970 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:494 [inline] alloc_slab_page mm/slub.c:1467 [inline] allocate_slab mm/slub.c:1612 [inline] new_slab+0x349/0x1b50 mm/slub.c:1683 new_slab_objects mm/slub.c:2464 [inline] ___slab_alloc+0x1516/0x1f50 mm/slub.c:2616 __slab_alloc mm/slub.c:2656 [inline] slab_alloc_node mm/slub.c:2719 [inline] kmem_cache_alloc_node+0x68e/0xc80 mm/slub.c:2795 __alloc_skb+0x202/0x9e0 net/core/skbuff.c:194 alloc_skb include/linux/skbuff.h:988 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1182 [inline] netlink_sendmsg+0x76e/0x1350 net/netlink/af_netlink.c:1876 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg net/socket.c:639 [inline] sock_write_iter+0x3bc/0x470 net/socket.c:908 do_iter_readv_writev+0x81c/0xa20 include/linux/fs.h:1778 do_iter_write+0x30d/0xd50 fs/read_write.c:959 vfs_writev fs/read_write.c:1004 [inline] do_writev+0x3be/0x820 fs/read_write.c:1039 __do_sys_writev fs/read_write.c:1112 [inline] __se_sys_writev fs/read_write.c:1109 [inline] __x64_sys_writev+0xe1/0x120 fs/read_write.c:1109 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x455ab9 RSP: 002b:00007f132cf55c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f132cf566d4 RCX: 0000000000455ab9 RDX: 0000000000000001 RSI: 0000000020000140 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014 R13: 00000000004c08be R14: 00000000004d4280 R15: 0000000000000002 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..