INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 49.436541] alg: No test for lrw(anubis) (lrw(ecb(anubis-generic))) [ 49.462128] Not allocated shadow for addr ffff88019c00f000 (page ffffea0009a805a0) [ 49.469861] Attempted to access 4096 bytes [ 49.474098] ------------[ cut here ]------------ [ 49.478830] kernel BUG at mm/kmsan/kmsan.c:1326! [ 49.483576] invalid opcode: 0000 [#1] SMP PTI [ 49.488044] Dumping ftrace buffer: [ 49.491554] (ftrace buffer empty) [ 49.495342] Modules linked in: [ 49.498523] CPU: 0 PID: 4512 Comm: syz-executor367 Not tainted 4.16.0+ #87 [ 49.505516] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.514860] RIP: 0010:kmsan_get_shadow_address+0x1ce/0x1f0 [ 49.520457] RSP: 0018:ffff88019eb1f4c0 EFLAGS: 00010082 [ 49.525794] RAX: 000000000000001e RBX: 0000000000000660 RCX: 0000000000000000 [ 49.533046] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 [ 49.540318] RBP: ffff88019eb1f4d8 R08: 0000000000000000 R09: 0000000000000001 [ 49.547693] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88019c00f000 [ 49.554940] R13: 0000000000001000 R14: 0000000000000001 R15: 0000000000001000 [ 49.562186] FS: 0000000000bfd880(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 [ 49.570386] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.576243] CR2: 0000000020b9c000 CR3: 00000001c937a000 CR4: 00000000001406f0 [ 49.583752] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.590998] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.598244] Call Trace: [ 49.600816] kmsan_internal_unpoison_shadow+0x5c/0xe0 [ 49.605989] kmsan_unpoison_shadow+0x66/0xb0 [ 49.610384] get_user_pages_fast+0x47b/0x760 [ 49.614783] iov_iter_get_pages+0x465/0x1810 [ 49.619172] af_alg_make_sg+0xdf/0x6d0 [ 49.623041] ? trace_kmalloc+0xa3/0x2b0 [ 49.626993] ? __kmalloc+0x20c/0x350 [ 49.630687] ? __list_add_valid+0xb8/0x450 [ 49.634999] af_alg_get_rsgl+0x746/0xe10 [ 49.639041] skcipher_recvmsg+0x546/0x1940 [ 49.643255] ? release_sock+0x237/0x2a0 [ 49.647207] skcipher_recvmsg_nokey+0x129/0x160 [ 49.651851] sock_recvmsg+0x1d0/0x230 [ 49.655626] ? skcipher_sendmsg_nokey+0x1f0/0x1f0 [ 49.660447] ___sys_recvmsg+0x3fb/0x810 [ 49.664399] ? __fget_light+0x56/0x710 [ 49.668261] ? __fdget+0x4e/0x60 [ 49.671604] ? __fget_light+0x1dc/0x710 [ 49.675555] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 49.680897] ? __fget_light+0x1f5/0x710 [ 49.684851] SYSC_recvmsg+0x298/0x3c0 [ 49.688630] SyS_recvmsg+0x54/0x80 [ 49.692144] do_syscall_64+0x309/0x430 [ 49.696009] ? ___sys_recvmsg+0x810/0x810 [ 49.700135] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 49.705321] RIP: 0033:0x4414a9 [ 49.709021] RSP: 002b:00007ffcd07b56b8 EFLAGS: 00000217 ORIG_RAX: 000000000000002f [ 49.716796] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004414a9 [ 49.724042] RDX: 0000000000000000 RSI: 0000000020158000 RDI: 0000000000000004 [ 49.731896] RBP: 0000000000000000 R08: 00000000d07b5838 R09: 00000000d07b5838 [ 49.739151] R10: 0000000000000020 R11: 0000000000000217 R12: 000000000000c0ef [ 49.746401] R13: 00000000006cd448 R14: 0000000000000000 R15: 0000000000000000 [ 49.754031] Code: 75 29 48 c7 c7 fd 92 7d 8a 31 c0 e8 4d 68 86 ff 80 3c 25 e8 03 2c 8b 00 75 11 48 c7 c7 2d 93 7d 8a 31 c0 4c 89 fe e8 32 68 86 ff <0f> 0b eb fe 48 3d ff ff ff 1f 0f 87 a2 fe ff ff 48 8b 1c 25 10 [ 49.773212] RIP: kmsan_get_shadow_address+0x1ce/0x1f0 RSP: ffff88019eb1f4c0 [ 49.780289] ---[ end trace 5deb237ccc67c79f ]--- [ 49.785037] Kernel panic - not syncing: Fatal exception [ 49.790739] Dumping ftrace buffer: [ 49.794256] (ftrace buffer empty) [ 49.797940] Kernel Offset: disabled [ 49.801540] Rebooting in 86400 seconds..