No origin for address ffff8801b09d8000 (page ffffea000a23b100), size=0
------------[ cut here ]------------
kernel BUG at mm/kmsan/kmsan.c:1316!
invalid opcode: 0000 [#1] SMP PTI
CPU: 1 PID: 9448 Comm: syz-executor3 Not tainted 4.19.0-rc4+ #51
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kmsan_get_origin_address+0x3bf/0x3e0 mm/kmsan/kmsan.c:1301
Code: e8 c6 17 7f ff 49 83 7d 40 00 0f 84 3a ff ff ff 0f 0b eb fe 48 c7 c7 5e 95 8a 89 31 c0 4c 89 f6 e8 a6 17 7f ff e9 dd fe ff ff <0f> 0b eb fe 48 3d ff ff ff 1f 0f 87 af fe ff ff 48 8b 14 25 10 60
RSP: 0018:ffff880114f3eec8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000000896e RDI: 000000000000896f
RBP: ffff880114f3eef8 R08: 0000000000000000 R09: ffff88021fd39250
R10: 0000000000000000 R11: ffffffff85427f10 R12: 0000000000000001
R13: ffffea000a23b100 R14: ffff8801b09d8000 R15: 0000000000000000
FS:  00007eff2c4b4700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000930004 CR3: 00000001162a6000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kmsan_memmove_origins+0xbd/0x1d0 mm/kmsan/kmsan.c:443
 __msan_memmove+0xc3/0x130 mm/kmsan/kmsan_instr.c:381
 move_right lib/vsprintf.c:560 [inline]
 widen_string+0x580/0x6c0 lib/vsprintf.c:583
 string+0x32a/0x340 lib/vsprintf.c:612
 vsnprintf+0x10aa/0x31a0 lib/vsprintf.c:2293
 seq_vprintf fs/seq_file.c:391 [inline]
 seq_printf+0x2cb/0x460 fs/seq_file.c:406
 ipv6_route_seq_show+0x431/0x520 net/ipv6/ip6_fib.c:2272
 seq_read+0x1404/0x1e80 fs/seq_file.c:268
 proc_reg_read+0x296/0x3c0 fs/proc/inode.c:231
 do_loop_readv_writev fs/read_write.c:700 [inline]
 do_iter_read+0xb87/0xe20 fs/read_write.c:924
 vfs_readv+0x1d9/0x250 fs/read_write.c:986
 kernel_readv fs/splice.c:362 [inline]
 default_file_splice_read+0xaa0/0x1120 fs/splice.c:417
 do_splice_to fs/splice.c:881 [inline]
 splice_direct_to_actor+0x4af/0xfb0 fs/splice.c:953
 do_splice_direct+0x332/0x540 fs/splice.c:1062
 do_sendfile+0x1070/0x1d80 fs/read_write.c:1440
 __do_sys_sendfile64 fs/read_write.c:1495 [inline]
 __se_sys_sendfile64+0x1c2/0x380 fs/read_write.c:1487
 __x64_sys_sendfile64+0x56/0x70 fs/read_write.c:1487
 do_syscall_64+0xb8/0x100 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457679
Code: 1d b4 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 b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007eff2c4b3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007eff2c4b46d4 RCX: 0000000000457679
RDX: 00000000200002c0 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 001000007ffff000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d50d0 R14: 00000000004c3512 R15: 0000000000000000
Modules linked in:
---[ end trace cb8a812381f1a544 ]---
RIP: 0010:kmsan_get_origin_address+0x3bf/0x3e0 mm/kmsan/kmsan.c:1301
Code: e8 c6 17 7f ff 49 83 7d 40 00 0f 84 3a ff ff ff 0f 0b eb fe 48 c7 c7 5e 95 8a 89 31 c0 4c 89 f6 e8 a6 17 7f ff e9 dd fe ff ff <0f> 0b eb fe 48 3d ff ff ff 1f 0f 87 af fe ff ff 48 8b 14 25 10 60
RSP: 0018:ffff880114f3eec8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000000896e RDI: 000000000000896f
RBP: ffff880114f3eef8 R08: 0000000000000000 R09: ffff88021fd39250
R10: 0000000000000000 R11: ffffffff85427f10 R12: 0000000000000001
R13: ffffea000a23b100 R14: ffff8801b09d8000 R15: 0000000000000000
FS:  00007eff2c4b4700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000930004 CR3: 00000001162a6000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400