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 'ci-upstream-mmots-kasan-gce-4,10.128.15.201' (ECDSA) to the list of known hosts.
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syzkaller login: [   28.969530] ==================================================================
[   28.969655] BUG: unable to handle kernel NULL pointer dereference at           (null)
[   28.969662] IP:           (null)
[   28.969666] PGD 1cb92d067 P4D 1cb92d067 PUD 1cbf4f067 PMD 0 
[   28.969675] Oops: 0010 [#1] SMP KASAN
[   28.969681] Dumping ftrace buffer:
[   28.969684]    (ftrace buffer empty)
[   28.969686] Modules linked in:
[   28.969693] CPU: 0 PID: 3152 Comm: syzkaller342511 Not tainted 4.15.0-rc1-mm1+ #29
[   28.969696] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   28.969698] task: 000000002a3073e3 task.stack: 000000009e1cbbb3
[   28.969700] RIP: 0010:          (null)
[   28.969702] RSP: 0018:ffff8801cb827818 EFLAGS: 00010286
[   28.969706] RAX: ffff8801cba77b40 RBX: 1ffff10039704f04 RCX: ffffffff823afbad
[   28.969713] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8801cb827820
[   28.969715] RBP: ffff8801cb8279c0 R08: 0000000000000000 R09: ffff8801cb09a910
[   28.969717] R10: 0000000000000008 R11: ffffed0039613529 R12: ffff8801cae86b18
[   28.969720] R13: ffff8801cba77b68 R14: ffff8801cb827820 R15: dffffc0000000000
[   28.969724] FS:  000000000199f880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
[   28.969726] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   28.969729] CR2: 0000000000000000 CR3: 00000001d58d3000 CR4: 00000000001406f0
[   28.969734] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   28.969736] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   28.969737] Call Trace:
[   28.969748]  ? aead_recvmsg+0xac7/0x1bc0
[   28.969756]  ? aead_recvmsg+0x967/0x1bc0
[   28.969769]  ? aead_release+0x50/0x50
[   28.969776]  ? selinux_socket_recvmsg+0x36/0x40
[   28.969783]  ? security_socket_recvmsg+0x91/0xc0
[   28.969788]  ? aead_release+0x50/0x50
[   28.969795]  sock_recvmsg+0xc9/0x110
[   28.969801]  sock_read_iter+0x361/0x560
[   28.969807]  ? sock_recvmsg+0x110/0x110
[   28.969812]  ? selinux_file_permission+0x82/0x460
[   28.969823]  ? rw_verify_area+0xe5/0x2b0
[   28.969832]  aio_read+0x2b0/0x3a0
[   28.969837]  ? aio_write+0x5a0/0x5a0
[   28.969847]  ? lock_downgrade+0x980/0x980
[   28.969856]  ? lock_release+0xda0/0xda0
[   28.969868]  ? __might_sleep+0x95/0x190
[   28.969875]  do_io_submit+0xf99/0x14f0
[   28.969879]  ? do_io_submit+0xf99/0x14f0
[   28.969888]  ? aio_read+0x3a0/0x3a0
[   28.969893]  ? lock_downgrade+0x980/0x980
[   28.969897]  ? SyS_io_setup+0x10e/0x390
[   28.969904]  ? lock_release+0xda0/0xda0
[   28.969919]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   28.969925]  SyS_io_submit+0x27/0x30
[   28.969929]  ? SyS_io_submit+0x27/0x30
[   28.969938]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   28.969941] RIP: 0033:0x440d49
[   28.969943] RSP: 002b:00007ffdb8d2f008 EFLAGS: 00000213 ORIG_RAX: 00000000000000d1
[   28.969947] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440d49
[   28.969949] RDX: 0000000020bd9fe0 RSI: 0000000000000002 RDI: 00007f89f388e000
[   28.969951] RBP: 0000000000007104 R08: 0000000000000000 R09: 0000000000000001
[   28.969954] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000000000
[   28.969956] R13: 00000000004021d0 R14: 0000000000000000 R15: 0000000000000000
[   28.969965] Code:  Bad RIP value.
[   28.969973] RIP:           (null) RSP: ffff8801cb827818
[   28.969974] CR2: 0000000000000000
[   28.969982] ---[ end trace e0c3dc2668b27d07 ]---
[   28.969984] Kernel panic - not syncing: Fatal exception
[   29.159134] BUG: KASAN: use-after-free in aead_recvmsg+0x1758/0x1bc0
[   29.165591] Read of size 4 at addr ffff8801cba77b5c by task syzkaller342511/3151
[   29.173085] 
[   29.174683] CPU: 1 PID: 3151 Comm: syzkaller342511 Tainted: G      D          4.15.0-rc1-mm1+ #29
[   29.183655] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   29.192971] Call Trace:
[   29.195529]  dump_stack+0x194/0x257
[   29.199123]  ? arch_local_irq_restore+0x53/0x53
[   29.203761]  ? show_regs_print_info+0x65/0x65
[   29.208223]  ? af_alg_make_sg+0x510/0x510
[   29.212335]  ? aead_recvmsg+0x1758/0x1bc0
[   29.216450]  print_address_description+0x73/0x250
[   29.221257]  ? aead_recvmsg+0x1758/0x1bc0
[   29.225370]  kasan_report+0x25b/0x340
[   29.229137]  __asan_report_load4_noabort+0x14/0x20
[   29.234031]  aead_recvmsg+0x1758/0x1bc0
[   29.237996]  ? aead_release+0x50/0x50
[   29.241762]  ? selinux_socket_recvmsg+0x36/0x40
[   29.246395]  ? security_socket_recvmsg+0x91/0xc0
[   29.251116]  ? aead_release+0x50/0x50
[   29.254883]  sock_recvmsg+0xc9/0x110
[   29.258562]  sock_read_iter+0x361/0x560
[   29.262502]  ? sock_recvmsg+0x110/0x110
[   29.266440]  ? selinux_file_permission+0x82/0x460
[   29.271250]  ? rw_verify_area+0xe5/0x2b0
[   29.275278]  aio_read+0x2b0/0x3a0
[   29.278698]  ? aio_write+0x5a0/0x5a0
[   29.282379]  ? lock_downgrade+0x980/0x980
[   29.286496]  ? lock_release+0xda0/0xda0
[   29.290440]  ? __might_sleep+0x95/0x190
[   29.294387]  do_io_submit+0xf99/0x14f0
[   29.298240]  ? do_io_submit+0xf99/0x14f0
[   29.302279]  ? aio_read+0x3a0/0x3a0
[   29.305877]  ? lock_downgrade+0x980/0x980
[   29.310011]  ? SyS_io_setup+0x10e/0x390
[   29.313964]  ? lock_release+0xda0/0xda0
[   29.317941]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   29.322939]  SyS_io_submit+0x27/0x30
[   29.326637]  ? SyS_io_submit+0x27/0x30
[   29.330495]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   29.335223] RIP: 0033:0x440d49
[   29.338381] RSP: 002b:00007ffdb8d2f008 EFLAGS: 00000213 ORIG_RAX: 00000000000000d1
[   29.346053] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440d49
[   29.353288] RDX: 0000000020bd9fe0 RSI: 0000000000000002 RDI: 00007f89f388e000
[   29.360521] RBP: 0000000000007105 R08: 0000000000000000 R09: 0000000000000005
[   29.367757] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000000000
[   29.374990] R13: 00000000004021d0 R14: 0000000000000000 R15: 0000000000000000
[   29.382234] 
[   29.383827] Allocated by task 3143:
[   29.387422]  save_stack+0x43/0xd0
[   29.390847]  kasan_kmalloc+0xad/0xe0
[   29.394527]  __kmalloc+0x162/0x760
[   29.398035]  crypto_create_tfm+0x82/0x2e0
[   29.402147]  crypto_alloc_tfm+0x10e/0x2f0
[   29.406258]  crypto_alloc_skcipher+0x2c/0x40
[   29.410632]  crypto_get_default_null_skcipher+0x5f/0x80
[   29.415957]  aead_init_geniv+0x164/0x310
[   29.419981]  crypto_aead_init_tfm+0x11e/0x180
[   29.424440]  crypto_create_tfm+0xdf/0x2e0
[   29.428551]  crypto_alloc_tfm+0x10e/0x2f0
[   29.432662]  crypto_alloc_aead+0x2c/0x40
[   29.436688]  aead_bind+0x70/0x140
[   29.440106]  alg_bind+0x1ab/0x440
[   29.443526]  SYSC_bind+0x1b4/0x3f0
[   29.447030]  SyS_bind+0x24/0x30
[   29.450277]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   29.455005] 
[   29.456597] Freed by task 3146:
[   29.459840]  save_stack+0x43/0xd0
[   29.463257]  kasan_slab_free+0x71/0xc0
[   29.467106]  kfree+0xca/0x250
[   29.470177]  kzfree+0x28/0x30
[   29.473245]  crypto_destroy_tfm+0x140/0x2e0
[   29.477532]  crypto_put_default_null_skcipher+0x35/0x60
[   29.482860]  aead_sock_destruct+0x13c/0x220
[   29.487143]  __sk_destruct+0xfd/0x910
[   29.490906]  sk_destruct+0x47/0x80
[   29.494409]  __sk_free+0x57/0x230
[   29.497825]  sk_free+0x2a/0x40
[   29.500982]  af_alg_release+0x5d/0x70
[   29.504748]  sock_release+0x8d/0x1e0
[   29.508422]  sock_close+0x16/0x20
[   29.511841]  __fput+0x333/0x7f0
[   29.515083]  ____fput+0x15/0x20
[   29.518327]  task_work_run+0x199/0x270
[   29.522181]  do_exit+0x9bb/0x1ae0
[   29.525596]  do_group_exit+0x149/0x400
[   29.529444]  SyS_exit_group+0x1d/0x20
[   29.533207]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   29.537922] 
[   29.539515] The buggy address belongs to the object at ffff8801cba77b40
[   29.539515]  which belongs to the cache kmalloc-128 of size 128
[   29.552133] The buggy address is located 28 bytes inside of
[   29.552133]  128-byte region [ffff8801cba77b40, ffff8801cba77bc0)
[   29.563881] The buggy address belongs to the page:
[   29.568862] page:000000000c8e666d count:1 mapcount:0 mapping:00000000627ba257 index:0x0
[   29.576977] flags: 0x2fffc0000000100(slab)
[   29.581179] raw: 02fffc0000000100 ffff8801cba77000 0000000000000000 0000000100000015
[   29.589034] raw: ffffea000732e120 ffffea00072cac60 ffff8801db000640 0000000000000000
[   29.596876] page dumped because: kasan: bad access detected
[   29.602546] 
[   29.604137] Memory state around the buggy address:
[   29.609030]  ffff8801cba77a00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   29.616351]  ffff8801cba77a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   29.623673] >ffff8801cba77b00: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
[   29.630996]                                                     ^
[   29.637190]  ffff8801cba77b80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   29.644516]  ffff8801cba77c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   29.651835] ==================================================================
[   29.659192] Dumping ftrace buffer:
[   29.662781]    (ftrace buffer empty)
[   29.666471] Kernel Offset: disabled
[   29.670071] Rebooting in 86400 seconds..