[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 35.025830] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 39.581755] random: sshd: uninitialized urandom read (32 bytes read) [ 40.006681] random: sshd: uninitialized urandom read (32 bytes read) [ 41.371472] random: sshd: uninitialized urandom read (32 bytes read) [ 41.600409] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.203' (ECDSA) to the list of known hosts. [ 47.153654] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.418584] FS-Cache: Duplicate cookie detected [ 47.423549] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1] [ 47.432538] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____) [ 47.439106] FS-Cache: O-key=[10] '34323934373134373134' [ 47.444636] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1] [ 47.452677] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____) [ 47.459230] FS-Cache: N-key=[10] '34323934373134373134' executing program executing program executing program [ 47.492016] FS-Cache: Duplicate cookie detected [ 47.497311] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1] [ 47.505621] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____) [ 47.512259] FS-Cache: O-key=[10] '34323934373134373837' [ 47.517831] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1] [ 47.526286] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____) [ 47.532907] FS-Cache: N-key=[10] '34323934373134373837' executing program executing program [ 47.541672] FS-Cache: Duplicate cookie detected [ 47.546508] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1] [ 47.554798] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____) [ 47.560695] FS-Cache: Duplicate cookie detected [ 47.561396] FS-Cache: O-key=[10] ' [ 47.566239] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1] [ 47.566244] 3432 [ 47.569820] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____) [ 47.569841] FS-Cache: O-key=[10] ' [ 47.578009] 3934373134383337' [ 47.578105] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1] [ 47.578127] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____) [ 47.580108] 343239 [ 47.586669] FS-Cache: N-key=[10] ' [ 47.590271] 3437 [ 47.593445] 34 [ 47.601507] 31 [ 47.607994] 32 [ 47.610147] 34383530 [ 47.613734] 39 [ 47.615713] ' [ 47.615736] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1] [ 47.615757] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____) executing program executing program executing program executing program executing program executing program executing program [ 47.617576] 34 [ 47.619401] FS-Cache: N-key=[10] '3432 [ 47.621257] 37 [ 47.623585] 393437 [ 47.625428] 31 [ 47.627146] 31343835 [ 47.635237] 34 [ 47.641677] 30' [ 47.643518] 383337' executing program [ 47.686543] FS-Cache: Duplicate cookie detected [ 47.691369] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1] [ 47.699630] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____) [ 47.706183] FS-Cache: O-key=[10] '34323934373134393832' [ 47.711667] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1] [ 47.719670] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____) [ 47.726200] FS-Cache: N-key=[10] '34323934373134393832' [ 47.731668] FS-Cache: Duplicate cookie detected executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 47.736462] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1] [ 47.744672] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____) [ 47.751231] FS-Cache: O-key=[10] '34323934373134393832' [ 47.756754] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1] [ 47.764775] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____) [ 47.771334] FS-Cache: N-key=[10] '34323934373134393832' executing program [ 47.820455] FS-Cache: Duplicate cookie detected [ 47.825275] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1] [ 47.827883] FS-Cache: Duplicate cookie detected [ 47.833521] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____) [ 47.838257] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1] [ 47.838281] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____) [ 47.844824] FS-Cache: O-key=[10] '34 [ 47.853001] FS-Cache: O-key=[10] ' [ 47.859538] 323934373135313136' [ 47.859609] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1] [ 47.859632] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____) [ 47.863352] 343239 [ 47.866937] FS-Cache: N-key=[10] ' [ 47.870225] 3437 [ 47.878235] 34 [ 47.884735] 313531 [ 47.886929] 32 [ 47.890477] 3231' [ 47.892496] 39 [ 47.894320] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1] [ 47.894333] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____) [ 47.894350] FS-Cache: N-key=[10] ' executing program executing program executing program executing program executing program executing program executing program executing program [ 47.896633] 34 [ 47.898458] 343239 [ 47.900821] 37 [ 47.902629] 343731 [ 47.910663] 31 [ 47.917175] 35313231' [ 47.920772] 35313136' [ 47.957070] FS-Cache: Duplicate cookie detected [ 47.959297] FS-Cache: Duplicate cookie detected [ 47.961940] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1] [ 47.966652] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1] [ 47.966678] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____) [ 47.974883] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____) [ 47.983088] FS-Cache: O-key=[10] ' [ 47.989607] FS-Cache: O-key=[10] '34323934373135323532' [ 47.989688] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1] [ 47.989701] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____) executing program [ 47.989720] FS-Cache: N-key=[10] ' [ 47.996239] 3432 [ 47.999842] 34 [ 48.005223] 393437 [ 48.013267] 32 [ 48.019796] 31 [ 48.023360] 39 [ 48.025342] 353235 [ 48.027187] 34 [ 48.029344] 33' [ 48.031207] 37 [ 48.033054] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1] [ 48.033076] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____) [ 48.034889] 31 [ 48.037052] FS-Cache: N-key=[10] '34 [ 48.038894] 35 [ 48.040800] 323934 [ 48.042660] 32 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 48.052845] 373135 [ 48.059376] 3532' [ 48.075410] 323533' executing program executing program executing program executing program [ 48.116988] FS-Cache: Duplicate cookie detected [ 48.121916] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1] [ 48.130196] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____) [ 48.136817] FS-Cache: O-key=[10] '34323934373135343132' [ 48.142388] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1] [ 48.150448] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____) [ 48.157052] FS-Cache: N-key=[10] '34323934373135343132' executing program executing program executing program executing program [ 48.170076] ================================================================== [ 48.177491] BUG: KMSAN: uninit-value in p9_client_rpc+0x194c/0x1dc0 [ 48.183913] CPU: 1 PID: 4620 Comm: syz-executor262 Not tainted 4.18.0-rc4+ #24 [ 48.191454] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.200814] Call Trace: [ 48.203409] dump_stack+0x185/0x1e0 [ 48.207062] kmsan_report+0x195/0x2c0 [ 48.210875] __msan_warning_32+0x7d/0xe0 [ 48.214940] p9_client_rpc+0x194c/0x1dc0 executing program executing program executing program [ 48.219015] ? init_wait_entry+0x1a0/0x1a0 [ 48.223269] p9_client_attach+0x35b/0xc30 [ 48.227430] v9fs_session_init+0x24b9/0x2970 [ 48.231861] ? __kmalloc+0x147/0x370 [ 48.235598] ? v9fs_mount+0x96/0x11b0 [ 48.239408] v9fs_mount+0x107/0x11b0 [ 48.243142] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 48.248500] ? xfs_fs_commit_blocks+0xd80/0xd80 [ 48.253162] mount_fs+0x29b/0x780 [ 48.257064] vfs_kern_mount+0x222/0x990 [ 48.261057] do_mount+0xd30/0x5310 [ 48.264614] ksys_mount+0x32e/0x3d0 executing program executing program executing program executing program [ 48.268245] __x64_sys_mount+0x157/0x1c0 [ 48.272587] ? ksys_mount+0x3d0/0x3d0 [ 48.276395] do_syscall_64+0x15b/0x230 [ 48.280302] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 48.285495] RIP: 0033:0x445f79 [ 48.288682] Code: e8 cc e6 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 3b 0d fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 48.307994] RSP: 002b:00007ffb83104da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 executing program executing program executing program executing program [ 48.315704] RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000445f79 [ 48.323068] RDX: 0000000020000180 RSI: 00000000200000c0 RDI: 0000000000000000 [ 48.330349] RBP: 00000000006dbc38 R08: 00000000200001c0 R09: 0000000000000000 [ 48.337606] R10: 0000000000000000 R11: 0000000000000202 R12: 0030656c69662f2e [ 48.344865] R13: 64663d736e617274 R14: 7974697275636573 R15: 0000000000000001 [ 48.352134] [ 48.353758] Local variable description: ----ecode.i@p9_client_rpc [ 48.359990] Variable was created at: [ 48.363708] p9_client_rpc+0x183/0x1dc0 [ 48.367682] p9_client_attach+0x35b/0xc30 [ 48.371816] ================================================================== [ 48.379157] Disabling lock debugging due to kernel taint [ 48.384593] Kernel panic - not syncing: panic_on_warn set ... [ 48.384593] [ 48.391956] CPU: 1 PID: 4620 Comm: syz-executor262 Tainted: G B 4.18.0-rc4+ #24 [ 48.400697] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.410139] Call Trace: [ 48.412734] dump_stack+0x185/0x1e0 [ 48.418281] panic+0x3d0/0x9b0 [ 48.421477] kmsan_report+0x2bf/0x2c0 [ 48.425286] __msan_warning_32+0x7d/0xe0 [ 48.429351] p9_client_rpc+0x194c/0x1dc0 [ 48.433425] ? init_wait_entry+0x1a0/0x1a0 [ 48.437660] p9_client_attach+0x35b/0xc30 [ 48.441809] v9fs_session_init+0x24b9/0x2970 [ 48.446244] ? __kmalloc+0x147/0x370 [ 48.449972] ? v9fs_mount+0x96/0x11b0 [ 48.453766] v9fs_mount+0x107/0x11b0 [ 48.457485] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 48.462849] ? xfs_fs_commit_blocks+0xd80/0xd80 [ 48.467516] mount_fs+0x29b/0x780 [ 48.470969] vfs_kern_mount+0x222/0x990 [ 48.474957] do_mount+0xd30/0x5310 [ 48.478510] ksys_mount+0x32e/0x3d0 [ 48.482142] __x64_sys_mount+0x157/0x1c0 [ 48.486207] ? ksys_mount+0x3d0/0x3d0 [ 48.490018] do_syscall_64+0x15b/0x230 [ 48.493913] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 48.499093] RIP: 0033:0x445f79 [ 48.502266] Code: e8 cc e6 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 3b 0d fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 48.521566] RSP: 002b:00007ffb83104da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 48.529287] RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000445f79 [ 48.536575] RDX: 0000000020000180 RSI: 00000000200000c0 RDI: 0000000000000000 [ 48.543871] RBP: 00000000006dbc38 R08: 00000000200001c0 R09: 0000000000000000 [ 48.551181] R10: 0000000000000000 R11: 0000000000000202 R12: 0030656c69662f2e [ 48.558468] R13: 64663d736e617274 R14: 7974697275636573 R15: 0000000000000001 [ 48.566364] Dumping ftrace buffer: [ 48.569912] (ftrace buffer empty) [ 48.573604] Kernel Offset: disabled [ 48.577224] Rebooting in 86400 seconds..