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 '10.128.0.23' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 48.517803] ================================================================== [ 48.525204] BUG: KMSAN: uninit-value in tgr192_pass+0x1a98/0x1f70 [ 48.531411] CPU: 1 PID: 3580 Comm: syzkaller402172 Not tainted 4.16.0+ #81 [ 48.538393] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.548071] Call Trace: [ 48.550650] dump_stack+0x185/0x1d0 [ 48.554255] ? tgr192_pass+0x1a98/0x1f70 [ 48.558303] kmsan_report+0x142/0x240 [ 48.562080] __msan_warning_32+0x6c/0xb0 [ 48.566116] tgr192_pass+0x1a98/0x1f70 [ 48.569984] ? kmsan_memcpy_origins+0xf1/0x170 [ 48.574543] tgr192_transform+0x23d/0x1090 [ 48.578750] ? shash_ahash_finup+0x468/0xa30 [ 48.583128] ? shash_ahash_digest+0x5c6/0x600 [ 48.587598] ? crypto_ahash_op+0x89a/0xc10 [ 48.591807] ? crypto_ahash_digest+0xe4/0x160 [ 48.596276] ? hash_sendpage+0xb40/0xe10 [ 48.600316] ? sock_sendpage+0x1de/0x2c0 [ 48.604354] ? pipe_to_sendpage+0x31b/0x430 [ 48.608649] ? __splice_from_pipe+0x49a/0xf30 [ 48.613118] ? generic_splice_sendpage+0x1c6/0x2a0 [ 48.618020] ? direct_splice_actor+0x19b/0x200 [ 48.622576] ? do_sendfile+0x1067/0x1e40 [ 48.626611] ? SYSC_sendfile64+0x1b3/0x300 [ 48.630820] ? SyS_sendfile64+0x64/0x90 [ 48.634770] ? kernel_text_address+0x34d/0x3a0 [ 48.639327] tgr192_final+0x778/0xa20 [ 48.643102] tgr160_final+0x8c/0x110 [ 48.646791] ? shash_finup_unaligned+0x35c/0x3f0 [ 48.651519] ? tgr192_final+0xa20/0xa20 [ 48.655466] ? tgr192_final+0xa20/0xa20 [ 48.659411] shash_finup_unaligned+0x3a8/0x3f0 [ 48.663968] ? crypto_shash_finup+0x520/0x520 [ 48.668437] shash_ahash_finup+0x468/0xa30 [ 48.672651] shash_ahash_digest+0x5c6/0x600 [ 48.676948] shash_async_digest+0x11c/0x1b0 [ 48.681248] crypto_ahash_op+0x89a/0xc10 [ 48.685286] ? __kmalloc+0x23c/0x350 [ 48.688975] ? shash_async_finup+0x1b0/0x1b0 [ 48.693356] ? shash_async_finup+0x1b0/0x1b0 [ 48.697738] crypto_ahash_digest+0xe4/0x160 [ 48.702038] hash_sendpage+0xb40/0xe10 [ 48.705901] ? hash_recvmsg+0xd50/0xd50 [ 48.709852] sock_sendpage+0x1de/0x2c0 [ 48.713716] pipe_to_sendpage+0x31b/0x430 [ 48.717838] ? sock_fasync+0x2b0/0x2b0 [ 48.721703] ? propagate_umount+0x3a30/0x3a30 [ 48.726172] __splice_from_pipe+0x49a/0xf30 [ 48.730469] ? generic_splice_sendpage+0x2a0/0x2a0 [ 48.735374] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 48.740711] generic_splice_sendpage+0x1c6/0x2a0 [ 48.745444] ? iter_file_splice_write+0x1710/0x1710 [ 48.750433] ? iter_file_splice_write+0x1710/0x1710 [ 48.755421] direct_splice_actor+0x19b/0x200 [ 48.759807] splice_direct_to_actor+0x764/0x1040 [ 48.764536] ? do_splice_direct+0x540/0x540 [ 48.768833] ? security_file_permission+0x28f/0x4b0 [ 48.773825] ? rw_verify_area+0x35e/0x580 [ 48.777949] do_splice_direct+0x335/0x540 [ 48.782072] do_sendfile+0x1067/0x1e40 [ 48.785940] SYSC_sendfile64+0x1b3/0x300 [ 48.789976] SyS_sendfile64+0x64/0x90 [ 48.793751] do_syscall_64+0x309/0x430 [ 48.797614] ? SYSC_sendfile+0x320/0x320 [ 48.801655] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 48.806820] RIP: 0033:0x440c19 [ 48.809984] RSP: 002b:00000000007dff78 EFLAGS: 00000217 ORIG_RAX: 0000000000000028 [ 48.817663] RAX: ffffffffffffffda RBX: 00007ffc7309cf60 RCX: 0000000000440c19 [ 48.824908] RDX: 0000000020e64ff8 RSI: 0000000000000005 RDI: 0000000000000004 [ 48.832151] RBP: 0000000000000000 R08: 0000000120080522 R09: 0000000120080522 [ 48.839407] R10: 0000000000000006 R11: 0000000000000217 R12: 00000000004023b0 [ 48.846648] R13: 0000000000402440 R14: 0000000000000000 R15: 0000000000000000 [ 48.853891] [ 48.855491] Uninit was stored to memory at: [ 48.859784] kmsan_internal_chain_origin+0x12b/0x210 [ 48.864856] kmsan_memcpy_origins+0x11d/0x170 [ 48.869336] __msan_memcpy+0x19f/0x1f0 [ 48.873196] tgr192_transform+0xc1/0x1090 [ 48.877314] tgr192_final+0x778/0xa20 [ 48.881084] tgr160_final+0x8c/0x110 [ 48.884768] shash_finup_unaligned+0x3a8/0x3f0 [ 48.889321] shash_ahash_finup+0x468/0xa30 [ 48.893527] shash_ahash_digest+0x5c6/0x600 [ 48.897829] shash_async_digest+0x11c/0x1b0 [ 48.902124] crypto_ahash_op+0x89a/0xc10 [ 48.906159] crypto_ahash_digest+0xe4/0x160 [ 48.910466] hash_sendpage+0xb40/0xe10 [ 48.914330] sock_sendpage+0x1de/0x2c0 [ 48.918190] pipe_to_sendpage+0x31b/0x430 [ 48.922311] __splice_from_pipe+0x49a/0xf30 [ 48.926606] generic_splice_sendpage+0x1c6/0x2a0 [ 48.931333] direct_splice_actor+0x19b/0x200 [ 48.935712] splice_direct_to_actor+0x764/0x1040 [ 48.940439] do_splice_direct+0x335/0x540 [ 48.944558] do_sendfile+0x1067/0x1e40 [ 48.948418] SYSC_sendfile64+0x1b3/0x300 [ 48.952453] SyS_sendfile64+0x64/0x90 [ 48.956228] do_syscall_64+0x309/0x430 [ 48.960088] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 48.965247] Uninit was stored to memory at: [ 48.969540] kmsan_internal_chain_origin+0x12b/0x210 [ 48.974616] __msan_chain_origin+0x69/0xc0 [ 48.978825] tgr192_update+0xaea/0xc50 [ 48.982683] shash_finup_unaligned+0x202/0x3f0 [ 48.987234] shash_ahash_finup+0x468/0xa30 [ 48.991440] shash_ahash_digest+0x5c6/0x600 [ 48.995740] shash_async_digest+0x11c/0x1b0 [ 49.000034] crypto_ahash_op+0x89a/0xc10 [ 49.004081] crypto_ahash_digest+0xe4/0x160 [ 49.008374] hash_sendpage+0xb40/0xe10 [ 49.012237] sock_sendpage+0x1de/0x2c0 [ 49.016097] pipe_to_sendpage+0x31b/0x430 [ 49.020217] __splice_from_pipe+0x49a/0xf30 [ 49.024517] generic_splice_sendpage+0x1c6/0x2a0 [ 49.029253] direct_splice_actor+0x19b/0x200 [ 49.033637] splice_direct_to_actor+0x764/0x1040 [ 49.038364] do_splice_direct+0x335/0x540 [ 49.042481] do_sendfile+0x1067/0x1e40 [ 49.046342] SYSC_sendfile64+0x1b3/0x300 [ 49.050378] SyS_sendfile64+0x64/0x90 [ 49.054151] do_syscall_64+0x309/0x430 [ 49.058015] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 49.063172] Uninit was created at: [ 49.066685] kmsan_alloc_meta_for_pages+0x161/0x3a0 [ 49.071670] kmsan_alloc_page+0x82/0xe0 [ 49.075617] __alloc_pages_nodemask+0xf5b/0x5dc0 [ 49.080359] alloc_pages_vma+0xcc8/0x1800 [ 49.084482] shmem_alloc_and_acct_page+0x6d5/0x1000 [ 49.089483] shmem_getpage_gfp+0x35db/0x5770 [ 49.093866] shmem_fallocate+0xde2/0x1610 [ 49.097984] vfs_fallocate+0x9dc/0xde0 [ 49.101843] SYSC_fallocate+0x119/0x1d0 [ 49.105789] SyS_fallocate+0x64/0x90 [ 49.109474] do_syscall_64+0x309/0x430 [ 49.113336] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 49.118494] ================================================================== [ 49.125822] Disabling lock debugging due to kernel taint [ 49.131242] Kernel panic - not syncing: panic_on_warn set ... [ 49.131242] [ 49.138578] CPU: 1 PID: 3580 Comm: syzkaller402172 Tainted: G B 4.16.0+ #81 [ 49.146861] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.156187] Call Trace: [ 49.158753] dump_stack+0x185/0x1d0 [ 49.162357] panic+0x39d/0x940 [ 49.165533] ? tgr192_pass+0x1a98/0x1f70 [ 49.169567] kmsan_report+0x238/0x240 [ 49.173342] __msan_warning_32+0x6c/0xb0 [ 49.177378] tgr192_pass+0x1a98/0x1f70 [ 49.181241] ? kmsan_memcpy_origins+0xf1/0x170 [ 49.185797] tgr192_transform+0x23d/0x1090 [ 49.190002] ? shash_ahash_finup+0x468/0xa30 [ 49.194383] ? shash_ahash_digest+0x5c6/0x600 [ 49.198852] ? crypto_ahash_op+0x89a/0xc10 [ 49.203062] ? crypto_ahash_digest+0xe4/0x160 [ 49.207532] ? hash_sendpage+0xb40/0xe10 [ 49.211567] ? sock_sendpage+0x1de/0x2c0 [ 49.215602] ? pipe_to_sendpage+0x31b/0x430 [ 49.219896] ? __splice_from_pipe+0x49a/0xf30 [ 49.224362] ? generic_splice_sendpage+0x1c6/0x2a0 [ 49.229265] ? direct_splice_actor+0x19b/0x200 [ 49.233818] ? do_sendfile+0x1067/0x1e40 [ 49.237854] ? SYSC_sendfile64+0x1b3/0x300 [ 49.242061] ? SyS_sendfile64+0x64/0x90 [ 49.246011] ? kernel_text_address+0x34d/0x3a0 [ 49.250569] tgr192_final+0x778/0xa20 [ 49.254343] tgr160_final+0x8c/0x110 [ 49.258030] ? shash_finup_unaligned+0x35c/0x3f0 [ 49.262755] ? tgr192_final+0xa20/0xa20 [ 49.266700] ? tgr192_final+0xa20/0xa20 [ 49.270645] shash_finup_unaligned+0x3a8/0x3f0 [ 49.275200] ? crypto_shash_finup+0x520/0x520 [ 49.279667] shash_ahash_finup+0x468/0xa30 [ 49.283878] shash_ahash_digest+0x5c6/0x600 [ 49.288176] shash_async_digest+0x11c/0x1b0 [ 49.292473] crypto_ahash_op+0x89a/0xc10 [ 49.296509] ? __kmalloc+0x23c/0x350 [ 49.300195] ? shash_async_finup+0x1b0/0x1b0 [ 49.304575] ? shash_async_finup+0x1b0/0x1b0 [ 49.308959] crypto_ahash_digest+0xe4/0x160 [ 49.313255] hash_sendpage+0xb40/0xe10 [ 49.317118] ? hash_recvmsg+0xd50/0xd50 [ 49.321066] sock_sendpage+0x1de/0x2c0 [ 49.324928] pipe_to_sendpage+0x31b/0x430 [ 49.329049] ? sock_fasync+0x2b0/0x2b0 [ 49.332925] ? propagate_umount+0x3a30/0x3a30 [ 49.337418] __splice_from_pipe+0x49a/0xf30 [ 49.341714] ? generic_splice_sendpage+0x2a0/0x2a0 [ 49.346620] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 49.351958] generic_splice_sendpage+0x1c6/0x2a0 [ 49.356691] ? iter_file_splice_write+0x1710/0x1710 [ 49.361683] ? iter_file_splice_write+0x1710/0x1710 [ 49.366673] direct_splice_actor+0x19b/0x200 [ 49.371063] splice_direct_to_actor+0x764/0x1040 [ 49.375804] ? do_splice_direct+0x540/0x540 [ 49.380103] ? security_file_permission+0x28f/0x4b0 [ 49.385093] ? rw_verify_area+0x35e/0x580 [ 49.389214] do_splice_direct+0x335/0x540 [ 49.393339] do_sendfile+0x1067/0x1e40 [ 49.397204] SYSC_sendfile64+0x1b3/0x300 [ 49.401240] SyS_sendfile64+0x64/0x90 [ 49.405016] do_syscall_64+0x309/0x430 [ 49.408877] ? SYSC_sendfile+0x320/0x320 [ 49.412914] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 49.418074] RIP: 0033:0x440c19 [ 49.421233] RSP: 002b:00000000007dff78 EFLAGS: 00000217 ORIG_RAX: 0000000000000028 [ 49.428911] RAX: ffffffffffffffda RBX: 00007ffc7309cf60 RCX: 0000000000440c19 [ 49.436156] RDX: 0000000020e64ff8 RSI: 0000000000000005 RDI: 0000000000000004 [ 49.443398] RBP: 0000000000000000 R08: 0000000120080522 R09: 0000000120080522 [ 49.450640] R10: 0000000000000006 R11: 0000000000000217 R12: 00000000004023b0 [ 49.457882] R13: 0000000000402440 R14: 0000000000000000 R15: 0000000000000000 [ 49.465500] Dumping ftrace buffer: [ 49.469014] (ftrace buffer empty) [ 49.472695] Kernel Offset: disabled [ 49.476307] Rebooting in 86400 seconds..