kauditd_printk_skb: 3 callbacks suppressed audit: type=1804 audit(1539288977.267:31): pid=6558 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor124" name="/root/bus" dev="sda1" ino=16482 res=1 Not allocated shadow for addr ffff8801a1ce3096 (page ffffea0009cad520) Attempted to access 8 bytes ------------[ cut here ]------------ kernel BUG at mm/kmsan/kmsan.c:1091! invalid opcode: 0000 [#1] SMP CPU: 0 PID: 6559 Comm: syz-executor124 Not tainted 4.19.0-rc7+ #68 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kmsan_get_shadow_address+0x2d6/0x3d0 mm/kmsan/kmsan.c:1089 Code: e9 89 00 00 00 c7 04 25 20 73 28 8c 01 00 00 00 65 48 8b 04 25 00 fd 02 00 c6 80 7b 09 00 00 01 80 3c 25 38 73 28 8c 00 74 0c <0f> 0b 0f 1f 84 00 00 00 00 00 eb fe 48 c7 c7 9c bd 57 8b 31 c0 4c RSP: 0018:ffff8801a1d0f2a0 EFLAGS: 00010046 RAX: 000000000000001b RBX: 0000000000000000 RCX: c6812d92a6c1a100 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffff8801a1d0f2d0 R08: 0000000000000000 R09: ffff88021fc38f50 R10: 0000000000000000 R11: ffffffff862609d0 R12: 0000000000000000 R13: ffff8801a1ce3096 R14: 0000000000000001 R15: ffff8801b64a5fe4 FS: 00007f0b28b24700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002000 CR3: 000000000b82f000 CR4: 00000000001406f0 Call Trace: __msan_memcpy+0xa3/0x150 mm/kmsan/kmsan_instr.c:276 tls_fill_prepend include/net/tls.h:374 [inline] tls_push_record+0x803/0x1fb0 net/tls/tls_sw.c:220 tls_sw_push_pending_record+0x6e/0x80 net/tls/tls_sw.c:257 tls_handle_open_record net/tls/tls_main.c:156 [inline] tls_sk_proto_close+0x39e/0x1120 net/tls/tls_main.c:271 inet_release+0x24f/0x2c0 net/ipv4/af_inet.c:428 inet6_release+0xaf/0x100 net/ipv6/af_inet6.c:457 __sock_release net/socket.c:579 [inline] sock_close+0x13f/0x400 net/socket.c:1141 __fput+0x4e8/0xda0 fs/file_table.c:278 ____fput+0x37/0x40 fs/file_table.c:309 task_work_run+0x467/0x500 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x15c1/0x3f80 kernel/exit.c:869 do_group_exit+0x1a0/0x350 kernel/exit.c:972 get_signal+0x1693/0x2390 kernel/signal.c:2513 do_signal+0x1ed/0x2da0 arch/x86/kernel/signal.c:816 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline] prepare_exit_to_usermode+0x293/0x470 arch/x86/entry/common.c:197 syscall_return_slowpath+0x112/0x880 arch/x86/entry/common.c:268 do_syscall_64+0xe4/0x100 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x446e79 Code: Bad RIP value. RSP: 002b:00007f0b28b23da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00000000006dcc58 RCX: 0000000000446e79 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dcc58 RBP: 00000000006dcc50 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc5c R13: 4000000000000001 R14: 00007f0b28b249c0 R15: 0000000000000001 Modules linked in: ---[ end trace 8f6c30d058770501 ]--- RIP: 0010:kmsan_get_shadow_address+0x2d6/0x3d0 mm/kmsan/kmsan.c:1089 Code: e9 89 00 00 00 c7 04 25 20 73 28 8c 01 00 00 00 65 48 8b 04 25 00 fd 02 00 c6 80 7b 09 00 00 01 80 3c 25 38 73 28 8c 00 74 0c <0f> 0b 0f 1f 84 00 00 00 00 00 eb fe 48 c7 c7 9c bd 57 8b 31 c0 4c RSP: 0018:ffff8801a1d0f2a0 EFLAGS: 00010046 RAX: 000000000000001b RBX: 0000000000000000 RCX: c6812d92a6c1a100 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffff8801a1d0f2d0 R08: 0000000000000000 R09: ffff88021fc38f50 R10: 0000000000000000 R11: ffffffff862609d0 R12: 0000000000000000 R13: ffff8801a1ce3096 R14: 0000000000000001 R15: ffff8801b64a5fe4 FS: 00007f0b28b24700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000446e4f CR3: 000000000b82f000 CR4: 00000000001406f0