[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 25.723233] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 26.530715] random: sshd: uninitialized urandom read (32 bytes read) [ 26.953983] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 27.597904] random: sshd: uninitialized urandom read (32 bytes read) [ 31.496248] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.37' (ECDSA) to the list of known hosts. [ 37.195347] random: sshd: uninitialized urandom read (32 bytes read) [ 37.321848] IPVS: ftp: loaded support on port[0] = 21 [ 37.331399] kasan: CONFIG_KASAN_INLINE enabled [ 37.336128] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 37.338482] IPVS: ftp: loaded support on port[0] = 21 [ 37.343885] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 37.349421] IPVS: ftp: loaded support on port[0] = 21 [ 37.355127] CPU: 0 PID: 5584 Comm: syz-executor919 Not tainted 4.19.0-rc3-next-20180912+ #72 [ 37.355133] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.355154] RIP: 0010:mqueue_get_tree+0xba/0x2e0 [ 37.355169] Code: 4c 8d b3 98 00 00 00 4d 85 ed 0f 84 d1 00 00 00 e8 6b 44 3f fe 49 8d 7d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e3 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b [ 37.360652] IPVS: ftp: loaded support on port[0] = 21 [ 37.368922] RSP: 0018:ffff8801c3fa7928 EFLAGS: 00010206 [ 37.378585] IPVS: ftp: loaded support on port[0] = 21 [ 37.383041] RAX: dffffc0000000000 RBX: ffff8801ccffa180 RCX: ffffffff8160aca1 [ 37.383047] RDX: 01ecd82e81ecc1bb RSI: ffffffff833deb15 RDI: 0f66c1740f660ddb [ 37.383054] RBP: ffff8801c3fa7948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 37.383061] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7a3ef80 [ 37.383088] R13: 0f66c1740f660dd3 R14: ffff8801ccffa218 R15: ffff8801ccffa218 [ 37.406085] kobject: 'lo' (00000000c46b49c8): kobject_add_internal: parent: 'net', set: 'devices' [ 37.407186] FS: 0000000000ce3940(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 37.416644] kobject: 'lo' (00000000c46b49c8): kobject_uevent_env [ 37.417746] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.428518] kobject: 'lo' (00000000c46b49c8): fill_kobj_path: path = '/devices/virtual/net/lo' [ 37.432274] CR2: 0000000000472000 CR3: 00000001d8fc7000 CR4: 00000000001406f0 [ 37.432284] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.432290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.432294] Call Trace: [ 37.432314] vfs_get_tree+0x1cb/0x5c0 [ 37.432333] mq_create_mount+0xe3/0x190 [ 37.443073] kobject: 'queues' (00000000394fc68d): kobject_add_internal: parent: 'lo', set: '' [ 37.446872] mq_init_ns+0x15a/0x210 [ 37.454319] kobject: 'queues' (00000000394fc68d): kobject_uevent_env [ 37.463168] copy_ipcs+0x3d2/0x580 [ 37.463179] ? ipcns_get+0xe0/0xe0 [ 37.463193] ? do_mount+0x1db0/0x1db0 [ 37.463203] ? kmem_cache_alloc+0x33a/0x730 [ 37.463223] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.471695] kobject: 'queues' (00000000394fc68d): kobject_uevent_env: filter function caused the event to drop! [ 37.477610] ? perf_event_namespaces+0x136/0x400 [ 37.483646] kobject: 'rx-0' (0000000004cac2e9): kobject_add_internal: parent: 'queues', set: 'queues' [ 37.495273] create_new_namespaces+0x376/0x900 [ 37.495288] ? sys_ni_syscall+0x20/0x20 [ 37.495303] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.495316] ? ns_capable_common+0x13f/0x170 [ 37.495332] unshare_nsproxy_namespaces+0xc3/0x1f0 [ 37.502851] kobject: 'rx-0' (0000000004cac2e9): kobject_uevent_env [ 37.509883] ksys_unshare+0x79c/0x10b0 [ 37.509898] ? walk_process_tree+0x440/0x440 [ 37.509912] ? lock_downgrade+0x900/0x900 [ 37.509929] ? kasan_check_read+0x11/0x20 [ 37.517393] kobject: 'rx-0' (0000000004cac2e9): fill_kobj_path: path = '/devices/virtual/net/lo/queues/rx-0' [ 37.519801] ? do_raw_spin_unlock+0xa7/0x2f0 [ 37.519811] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 37.519825] ? kasan_check_write+0x14/0x20 [ 37.519835] ? do_raw_read_unlock+0x3f/0x60 [ 37.519852] ? do_syscall_64+0x9a/0x820 [ 37.523731] kobject: 'tx-0' (0000000033316a33): kobject_add_internal: parent: 'queues', set: 'queues' [ 37.527594] ? do_syscall_64+0x9a/0x820 [ 37.537171] kobject: 'tx-0' (0000000033316a33): kobject_uevent_env [ 37.540378] ? lockdep_hardirqs_on+0x421/0x5c0 [ 37.540393] ? trace_hardirqs_on+0xbd/0x310 [ 37.540408] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.540424] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 37.547075] kobject: 'tx-0' (0000000033316a33): fill_kobj_path: path = '/devices/virtual/net/lo/queues/tx-0' [ 37.550458] ? __ia32_sys_prlimit64+0x8c0/0x8c0 [ 37.550474] __x64_sys_unshare+0x31/0x40 [ 37.550487] do_syscall_64+0x1b9/0x820 [ 37.550503] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 37.555160] kobject: 'lo' (0000000094c45171): kobject_add_internal: parent: 'net', set: 'devices' [ 37.557833] ? syscall_return_slowpath+0x5e0/0x5e0 [ 37.563173] kobject: 'lo' (0000000094c45171): kobject_uevent_env [ 37.567697] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.578097] kobject: 'lo' (0000000094c45171): fill_kobj_path: path = '/devices/virtual/net/lo' [ 37.582666] ? trace_hardirqs_on_caller+0x310/0x310 [ 37.582680] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 37.582693] ? prepare_exit_to_usermode+0x291/0x3b0 [ 37.582709] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.592311] kobject: 'queues' (00000000d66cc4e2): kobject_add_internal: parent: 'lo', set: '' [ 37.596629] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.600760] kobject: 'queues' (00000000d66cc4e2): kobject_uevent_env [ 37.606102] RIP: 0033:0x449617 [ 37.610695] kobject: 'queues' (00000000d66cc4e2): kobject_uevent_env: filter function caused the event to drop! [ 37.615461] Code: 00 00 00 b8 63 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 cd dd fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ad dd fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 37.621938] kobject: 'rx-0' (00000000e9f80833): kobject_add_internal: parent: 'queues', set: 'queues' [ 37.625639] RSP: 002b:00007fffe7366d08 EFLAGS: 00000217 [ 37.630818] kobject: 'rx-0' (00000000e9f80833): kobject_uevent_env [ 37.634769] ORIG_RAX: 0000000000000110 [ 37.638941] kobject: 'rx-0' (00000000e9f80833): fill_kobj_path: path = '/devices/virtual/net/lo/queues/rx-0' [ 37.648857] RAX: ffffffffffffffda RBX: 00007fffe7366d20 RCX: 0000000000449617 [ 37.648864] RDX: 0000000000000000 RSI: 00007fffe7366d10 RDI: 0000000008000000 [ 37.648870] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000ce3940 [ 37.648883] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000407850 [ 37.648890] R13: 00000000004078e0 R14: 0000000000000000 R15: 0000000000000000 [ 37.648902] Modules linked in: [ 37.648957] ---[ end trace acaf1a269173e4a1 ]--- [ 37.659933] kobject: 'tx-0' (000000005bb78546): kobject_add_internal: parent: 'queues', set: 'queues' [ 37.662169] RIP: 0010:mqueue_get_tree+0xba/0x2e0 [ 37.666649] kobject: 'tx-0' (000000005bb78546): kobject_uevent_env [ 37.670477] Code: 4c 8d b3 98 00 00 00 4d 85 ed 0f 84 d1 00 00 00 e8 6b 44 3f fe 49 8d 7d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e3 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b [ 37.670489] RSP: 0018:ffff8801c3fa7928 EFLAGS: 00010206 [ 37.680392] kobject: 'tx-0' (000000005bb78546): fill_kobj_path: path = '/devices/virtual/net/lo/queues/tx-0' [ 37.691541] kobject: 'lo' (00000000f003e75b): kobject_add_internal: parent: 'net', set: 'devices' [ 37.694750] RAX: dffffc0000000000 RBX: ffff8801ccffa180 RCX: ffffffff8160aca1 [ 37.700320] kobject: 'lo' (00000000f003e75b): kobject_uevent_env [ 37.704485] RDX: 01ecd82e81ecc1bb RSI: ffffffff833deb15 RDI: 0f66c1740f660ddb [ 37.710388] kobject: 'lo' (00000000f003e75b): fill_kobj_path: path = '/devices/virtual/net/lo' [ 37.719886] RBP: ffff8801c3fa7948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 37.719893] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7a3ef80 [ 37.719900] R13: 0f66c1740f660dd3 R14: ffff8801ccffa218 R15: ffff8801ccffa218 [ 37.719915] FS: 0000000000ce3940(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 37.725815] kobject: 'queues' (00000000255a8195): kobject_add_internal: parent: 'lo', set: '' [ 37.728638] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.733217] kobject: 'queues' (00000000255a8195): kobject_uevent_env [ 37.737902] CR2: 0000000000472000 CR3: 00000001d8fc7000 CR4: 00000000001406f0 [ 37.748678] kobject: 'queues' (00000000255a8195): kobject_uevent_env: filter function caused the event to drop! [ 37.753210] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.753219] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.753229] Kernel panic - not syncing: Fatal exception [ 37.759565] kobject: 'rx-0' (00000000d4ba9b98): kobject_add_internal: parent: 'queues', set: 'queues' [ 37.765183] Kernel Offset: disabled [ 38.121225] Rebooting in 86400 seconds..