[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.92' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   33.756000] audit: type=1400 audit(1601507644.427:8): avc:  denied  { execmem } for  pid=6335 comm="syz-executor157" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   33.796408] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   33.805791] REISERFS (device loop0): using ordered data mode
[   33.811801] reiserfs: using flush barriers
[   33.818542] REISERFS (device loop0): journal params: device loop0, size 15748, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[   33.837464] REISERFS (device loop0): checking transaction log (loop0)
[   35.024163] REISERFS warning (device loop0): vs-13075 reiserfs_read_locked_inode: dead inode read from disk [1 2 0x0 SD]. This is likely to be race with knfsd. Ignore
[   35.041267] REISERFS (device loop0): Using rupasov hash to sort names
[   35.048658] REISERFS (device loop0): using 3.5.x disk format
executing program
[   35.303900] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal
[   35.315139] REISERFS (device loop0): using ordered data mode
[   35.321497] reiserfs: using flush barriers
[   35.326962] REISERFS (device loop0): journal params: device loop0, size 15748, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[   35.351428] REISERFS (device loop0): checking transaction log (loop0)
[   36.534905] ==================================================================
[   36.542797] BUG: KASAN: use-after-free in reiserfs_read_locked_inode+0x2028/0x2190
[   36.550934] Read of size 4 at addr ffff888078602000 by task syz-executor157/6347
[   36.558588] 
[   36.560452] CPU: 0 PID: 6347 Comm: syz-executor157 Not tainted 4.14.198-syzkaller #0
[   36.569082] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   36.578887] Call Trace:
[   36.581913]  dump_stack+0x1b2/0x283
[   36.585535]  print_address_description.cold+0x54/0x1d3
[   36.591073]  kasan_report_error.cold+0x8a/0x194
[   36.595894]  ? reiserfs_read_locked_inode+0x2028/0x2190
[   36.601521]  __asan_report_load_n_noabort+0x6b/0x80
[   36.606535]  ? reiserfs_read_locked_inode+0x2028/0x2190
[   36.612245]  reiserfs_read_locked_inode+0x2028/0x2190
[   36.617779]  ? sd_attrs_to_i_attrs+0x230/0x230
[   36.622399]  ? __ww_mutex_wakeup_for_backoff+0x160/0x210
[   36.627847]  reiserfs_fill_super+0x1517/0x28b6
[   36.632527]  ? reiserfs_remount+0x1390/0x1390
[   36.637078]  ? lock_downgrade+0x740/0x740
[   36.641393]  ? snprintf+0xa5/0xd0
[   36.644842]  ? ns_test_super+0x50/0x50
[   36.649179]  ? set_blocksize+0x125/0x380
[   36.653563]  mount_bdev+0x2b3/0x360
[   36.657400]  ? reiserfs_remount+0x1390/0x1390
[   36.662040]  mount_fs+0x92/0x2a0
[   36.665410]  vfs_kern_mount.part.0+0x5b/0x470
[   36.670107]  do_mount+0xe53/0x2a00
[   36.673957]  ? copy_mount_string+0x40/0x40
[   36.678225]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[   36.683234]  ? copy_mnt_ns+0xa30/0xa30
[   36.687402]  ? copy_mount_options+0x1fa/0x2f0
[   36.691996]  ? copy_mnt_ns+0xa30/0xa30
[   36.696233]  SyS_mount+0xa8/0x120
[   36.699843]  ? copy_mnt_ns+0xa30/0xa30
[   36.703721]  do_syscall_64+0x1d5/0x640
[   36.708115]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   36.713359] RIP: 0033:0x447d8a
[   36.716549] RSP: 002b:00007fff6319c2c8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5
[   36.724390] RAX: ffffffffffffffda RBX: 00007fff6319c320 RCX: 0000000000447d8a
[   36.731944] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff6319c2e0
[   36.739501] RBP: 00007fff6319c2e0 R08: 00007fff6319c320 R09: 0000000000000000
[   36.747017] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000006
[   36.754691] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003
[   36.762185] 
[   36.763827] The buggy address belongs to the page:
[   36.768747] page:ffffea0001e18080 count:0 mapcount:0 mapping:          (null) index:0x1
[   36.777245] flags: 0xfffe0000000000()
[   36.781105] raw: 00fffe0000000000 0000000000000000 0000000000000001 00000000ffffffff
[   36.789164] raw: ffffea0001e180e0 ffff8880aea2ed48 0000000000000000 0000000000000000
[   36.798476] page dumped because: kasan: bad access detected
[   36.804352] 
[   36.805966] Memory state around the buggy address:
[   36.810904]  ffff888078601f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   36.818735]  ffff888078601f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   36.826276] >ffff888078602000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   36.833921]                    ^
[   36.837278]  ffff888078602080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   36.844805]  ffff888078602100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   36.852283] ==================================================================
[   36.860511] Disabling lock debugging due to kernel taint
[   36.866464] Kernel panic - not syncing: panic_on_warn set ...
[   36.866464] 
[   36.873940] CPU: 0 PID: 6347 Comm: syz-executor157 Tainted: G    B           4.14.198-syzkaller #0
[   36.883042] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   36.892841] Call Trace:
[   36.895424]  dump_stack+0x1b2/0x283
[   36.899041]  panic+0x1f9/0x42d
[   36.902225]  ? add_taint.cold+0x16/0x16
[   36.906192]  ? ___preempt_schedule+0x16/0x18
[   36.910761]  kasan_end_report+0x43/0x49
[   36.914760]  kasan_report_error.cold+0xa7/0x194
[   36.919617]  ? reiserfs_read_locked_inode+0x2028/0x2190
[   36.925144]  __asan_report_load_n_noabort+0x6b/0x80
[   36.930258]  ? reiserfs_read_locked_inode+0x2028/0x2190
[   36.935828]  reiserfs_read_locked_inode+0x2028/0x2190
[   36.941012]  ? sd_attrs_to_i_attrs+0x230/0x230
[   36.946063]  ? __ww_mutex_wakeup_for_backoff+0x160/0x210
[   36.951838]  reiserfs_fill_super+0x1517/0x28b6
[   36.956597]  ? reiserfs_remount+0x1390/0x1390
[   36.961103]  ? lock_downgrade+0x740/0x740
[   36.965343]  ? snprintf+0xa5/0xd0
[   36.968803]  ? ns_test_super+0x50/0x50
[   36.972767]  ? set_blocksize+0x125/0x380
[   36.976998]  mount_bdev+0x2b3/0x360
[   36.980624]  ? reiserfs_remount+0x1390/0x1390
[   36.985568]  mount_fs+0x92/0x2a0
[   36.988930]  vfs_kern_mount.part.0+0x5b/0x470
[   36.993691]  do_mount+0xe53/0x2a00
[   36.997361]  ? copy_mount_string+0x40/0x40
[   37.001687]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[   37.006790]  ? copy_mnt_ns+0xa30/0xa30
[   37.010840]  ? copy_mount_options+0x1fa/0x2f0
[   37.015333]  ? copy_mnt_ns+0xa30/0xa30
[   37.019355]  SyS_mount+0xa8/0x120
[   37.022967]  ? copy_mnt_ns+0xa30/0xa30
[   37.026860]  do_syscall_64+0x1d5/0x640
[   37.030739]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   37.037138] RIP: 0033:0x447d8a
[   37.040505] RSP: 002b:00007fff6319c2c8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5
[   37.048364] RAX: ffffffffffffffda RBX: 00007fff6319c320 RCX: 0000000000447d8a
[   37.057738] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff6319c2e0
[   37.065329] RBP: 00007fff6319c2e0 R08: 00007fff6319c320 R09: 0000000000000000
[   37.073148] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000006
[   37.081007] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003
[   37.090106] Kernel Offset: disabled
[   37.093735] Rebooting in 86400 seconds..