[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   32.796210] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   36.733330] random: sshd: uninitialized urandom read (32 bytes read)
[   37.092708] random: sshd: uninitialized urandom read (32 bytes read)
[   38.467853] random: sshd: uninitialized urandom read (32 bytes read)
[   38.706997] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.47' (ECDSA) to the list of known hosts.
[   44.219654] random: sshd: uninitialized urandom read (32 bytes read)
2018/07/14 05:10:00 parsed 1 programs
[   45.316681] random: cc1: uninitialized urandom read (8 bytes read)
2018/07/14 05:10:02 executed programs: 0
[   46.655536] IPVS: ftp: loaded support on port[0] = 21
[   46.833847] FAULT_INJECTION: forcing a failure.
[   46.833847] name failslab, interval 1, probability 0, space 0, times 1
[   46.845240] CPU: 1 PID: 4571 Comm: syz-executor0 Not tainted 4.18.0-rc4+ #27
[   46.852447] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.861827] Call Trace:
[   46.864441]  dump_stack+0x185/0x1e0
[   46.868097]  should_fail+0x8a7/0xae0
[   46.871863]  __should_failslab+0x278/0x2a0
[   46.876126]  should_failslab+0x29/0x70
[   46.880069]  __kmalloc_node+0x23c/0x1240
[   46.884147]  ? kmsan_set_origin_inline+0x6b/0x120
[   46.889040]  ? kvmalloc_node+0x19d/0x370
[   46.893116]  kvmalloc_node+0x19d/0x370
[   46.897018]  semctl_main+0xcf2/0x5980
[   46.900864]  ? kmsan_set_origin_inline+0x6b/0x120
[   46.905719]  ? kmsan_set_origin+0x9e/0x160
[   46.910006]  ? task_kmsan_context_state+0x6b/0x120
[   46.914984]  ? task_kmsan_context_state+0x6b/0x120
[   46.919936]  ? __msan_metadata_ptr_for_store_1+0x13/0x20
[   46.925844]  ? kmsan_set_origin_inline+0x6b/0x120
[   46.930709]  ? __msan_poison_alloca+0x183/0x220
[   46.935408]  ? __x64_sys_semctl+0x11e/0x170
[   46.939741]  ? ksys_semctl+0xa4/0x730
[   46.943562]  ksys_semctl+0x5ef/0x730
[   46.947310]  __x64_sys_semctl+0x11e/0x170
[   46.951476]  ? semctl_down+0xf00/0xf00
[   46.955377]  do_syscall_64+0x15b/0x230
[   46.959277]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[   46.964471] RIP: 0033:0x455ab9
[   46.967663] Code: 1d ba 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 b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
[   46.987429] RSP: 002b:00007ffcdd889cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000042
[   46.995150] RAX: ffffffffffffffda RBX: 00000000019b5914 RCX: 0000000000455ab9
[   47.002422] RDX: 000000000000000d RSI: 0000000000000000 RDI: 0000000000000000
[   47.009707] RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
[   47.016975] R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000004
[   47.024251] R13: 00000000004c0c8f R14: 00000000004d11e8 R15: 0000000000000000
[   47.032621] ==================================================================
[   47.040013] BUG: KMSAN: kernel-infoleak in semctl_main+0x1361/0x5980
[   47.046506] CPU: 1 PID: 4571 Comm: syz-executor0 Not tainted 4.18.0-rc4+ #27
[   47.053675] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.063017] Call Trace:
[   47.065607]  dump_stack+0x185/0x1e0
[   47.069223]  kmsan_report+0x195/0x2c0
[   47.073027]  kmsan_internal_check_memory+0x148/0x210
[   47.078139]  kmsan_copy_to_user+0x83/0xe0
[   47.082294]  semctl_main+0x1361/0x5980
[   47.086180]  ? kmsan_set_origin_inline+0x6b/0x120
[   47.091020]  ? kmsan_set_origin+0x9e/0x160
[   47.095257]  ? task_kmsan_context_state+0x6b/0x120
[   47.100182]  ? task_kmsan_context_state+0x6b/0x120
[   47.105107]  ? __msan_metadata_ptr_for_store_1+0x13/0x20
[   47.110564]  ? kmsan_set_origin_inline+0x6b/0x120
[   47.115409]  ? __msan_poison_alloca+0x183/0x220
[   47.120076]  ? __x64_sys_semctl+0x11e/0x170
[   47.124405]  ? ksys_semctl+0xa4/0x730
[   47.128208]  ksys_semctl+0x5ef/0x730
[   47.131927]  __x64_sys_semctl+0x11e/0x170
[   47.136068]  ? semctl_down+0xf00/0xf00
[   47.139941]  do_syscall_64+0x15b/0x230
[   47.143827]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[   47.149004] RIP: 0033:0x455ab9
[   47.152199] Code: 1d ba 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 b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
[   47.171384] RSP: 002b:00007ffcdd889cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000042
[   47.179086] RAX: ffffffffffffffda RBX: 00000000019b5914 RCX: 0000000000455ab9
[   47.186342] RDX: 000000000000000d RSI: 0000000000000000 RDI: 0000000000000000
[   47.193598] RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
[   47.200879] R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000004
[   47.208141] R13: 00000000004c0c8f R14: 00000000004d11e8 R15: 0000000000000000
[   47.215404] 
[   47.217014] Uninit was created at:
[   47.220576]  kmsan_internal_alloc_meta_for_pages+0x157/0x730
[   47.226379]  kmsan_alloc_page+0x80/0xe0
[   47.230341]  __alloc_pages_nodemask+0x105b/0x6320
[   47.235169]  alloc_pages_current+0x6b1/0x970
[   47.239563]  __vmalloc_node_range+0x8bf/0x1170
[   47.244130]  __vmalloc_node_flags_caller+0x12b/0x140
[   47.249230]  kvmalloc_node+0x330/0x370
[   47.253117]  semctl_main+0xcf2/0x5980
[   47.256903]  ksys_semctl+0x5ef/0x730
[   47.260606]  __x64_sys_semctl+0x11e/0x170
[   47.264737]  do_syscall_64+0x15b/0x230
[   47.268611]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[   47.273776] 
[   47.275387] Bytes 4096-4101 of 4110 are uninitialized
[   47.280561] Memory access starts at ffffc9000194e000
[   47.285649] ==================================================================
[   47.292994] Disabling lock debugging due to kernel taint
[   47.298434] Kernel panic - not syncing: panic_on_warn set ...
[   47.298434] 
[   47.305787] CPU: 1 PID: 4571 Comm: syz-executor0 Tainted: G    B             4.18.0-rc4+ #27
[   47.314367] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.323718] Call Trace:
[   47.326302]  dump_stack+0x185/0x1e0
[   47.329922]  panic+0x3d0/0x9b0
[   47.333120]  kmsan_report+0x2bf/0x2c0
[   47.336918]  kmsan_internal_check_memory+0x148/0x210
[   47.342028]  kmsan_copy_to_user+0x83/0xe0
[   47.346190]  semctl_main+0x1361/0x5980
[   47.350079]  ? kmsan_set_origin_inline+0x6b/0x120
[   47.354916]  ? kmsan_set_origin+0x9e/0x160
[   47.359144]  ? task_kmsan_context_state+0x6b/0x120
[   47.364070]  ? task_kmsan_context_state+0x6b/0x120
[   47.368998]  ? __msan_metadata_ptr_for_store_1+0x13/0x20
[   47.374466]  ? kmsan_set_origin_inline+0x6b/0x120
[   47.379305]  ? __msan_poison_alloca+0x183/0x220
[   47.383959]  ? __x64_sys_semctl+0x11e/0x170
[   47.388279]  ? ksys_semctl+0xa4/0x730
[   47.392077]  ksys_semctl+0x5ef/0x730
[   47.395783]  __x64_sys_semctl+0x11e/0x170
[   47.399917]  ? semctl_down+0xf00/0xf00
[   47.403790]  do_syscall_64+0x15b/0x230
[   47.407667]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[   47.412839] RIP: 0033:0x455ab9
[   47.416011] Code: 1d ba 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 b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
[   47.435226] RSP: 002b:00007ffcdd889cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000042
[   47.442922] RAX: ffffffffffffffda RBX: 00000000019b5914 RCX: 0000000000455ab9
[   47.450176] RDX: 000000000000000d RSI: 0000000000000000 RDI: 0000000000000000
[   47.457438] RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
[   47.464694] R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000004
[   47.471947] R13: 00000000004c0c8f R14: 00000000004d11e8 R15: 0000000000000000
[   47.479675] Dumping ftrace buffer:
[   47.483205]    (ftrace buffer empty)
[   47.486895] Kernel Offset: disabled
[   47.490505] Rebooting in 86400 seconds..