[   43.933501][   T26] audit: type=1800 audit(1575260305.213:29): pid=8028 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.0.124' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   55.675632][ T8180] ==================================================================
[   55.684029][ T8180] BUG: KASAN: slab-out-of-bounds in pipe_write+0x579/0x1130
[   55.691399][ T8180] Write of size 8 at addr ffff88809d60fc28 by task syz-executor553/8180
[   55.699711][ T8180] 
[   55.702023][ T8180] CPU: 1 PID: 8180 Comm: syz-executor553 Not tainted 5.4.0-syzkaller #0
[   55.710332][ T8180] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.720379][ T8180] Call Trace:
[   55.723663][ T8180]  dump_stack+0x1fb/0x318
[   55.727972][ T8180]  print_address_description+0x75/0x5c0
[   55.733493][ T8180]  ? vprintk_default+0x28/0x30
[   55.738233][ T8180]  ? vprintk_func+0x158/0x170
[   55.742892][ T8180]  ? printk+0x62/0x8d
[   55.746946][ T8180]  __kasan_report+0x14b/0x1c0
[   55.751639][ T8180]  ? lockdep_hardirqs_on+0x2f1/0x7d0
[   55.756963][ T8180]  ? pipe_write+0x579/0x1130
[   55.761568][ T8180]  kasan_report+0x26/0x50
[   55.765928][ T8180]  __asan_report_store8_noabort+0x17/0x20
[   55.771854][ T8180]  pipe_write+0x579/0x1130
[   55.776292][ T8180]  __vfs_write+0x5a1/0x740
[   55.780701][ T8180]  vfs_write+0x275/0x590
[   55.784928][ T8180]  ksys_write+0x117/0x220
[   55.789237][ T8180]  __x64_sys_write+0x7b/0x90
[   55.793818][ T8180]  do_syscall_64+0xf7/0x1c0
[   55.798301][ T8180]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   55.804168][ T8180] RIP: 0033:0x445879
[   55.808039][ T8180] Code: e8 ec bc 02 00 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 cb 11 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   55.827617][ T8180] RSP: 002b:00007fb3dea9edb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   55.836003][ T8180] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 0000000000445879
[   55.844460][ T8180] RDX: 00000000fffffef3 RSI: 00000000200001c0 RDI: 0000000000000004
[   55.852431][ T8180] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000
[   55.861072][ T8180] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac2c
[   55.869052][ T8180] R13: 00007ffe63472c0f R14: 00007fb3dea9f9c0 R15: 0000000000000000
[   55.877009][ T8180] 
[   55.879313][ T8180] Allocated by task 8182:
[   55.883710][ T8180]  __kasan_kmalloc+0x11c/0x1b0
[   55.888447][ T8180]  kasan_kmalloc+0x9/0x10
[   55.892778][ T8180]  __kmalloc+0x254/0x340
[   55.896999][ T8180]  kcalloc+0x36/0x60
[   55.900866][ T8180]  pipe_fcntl+0x413/0x810
[   55.905170][ T8180]  do_fcntl+0x56d/0x1180
[   55.909404][ T8180]  __se_sys_fcntl+0xde/0x1b0
[   55.913968][ T8180]  __x64_sys_fcntl+0x7b/0x90
[   55.918555][ T8180]  do_syscall_64+0xf7/0x1c0
[   55.923046][ T8180]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   55.928910][ T8180] 
[   55.931218][ T8180] Freed by task 0:
[   55.934911][ T8180] (stack is not available)
[   55.939310][ T8180] 
[   55.941638][ T8180] The buggy address belongs to the object at ffff88809d60fc00
[   55.941638][ T8180]  which belongs to the cache kmalloc-64 of size 64
[   55.956135][ T8180] The buggy address is located 40 bytes inside of
[   55.956135][ T8180]  64-byte region [ffff88809d60fc00, ffff88809d60fc40)
[   55.969210][ T8180] The buggy address belongs to the page:
[   55.974942][ T8180] page:ffffea00027583c0 refcount:1 mapcount:0 mapping:ffff8880aa400380 index:0x0
[   55.984048][ T8180] raw: 00fffe0000000200 ffffea00025bb608 ffff8880aa401348 ffff8880aa400380
[   55.992608][ T8180] raw: 0000000000000000 ffff88809d60f000 0000000100000020 0000000000000000
[   56.001768][ T8180] page dumped because: kasan: bad access detected
[   56.008166][ T8180] 
[   56.010489][ T8180] Memory state around the buggy address:
[   56.016106][ T8180]  ffff88809d60fb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   56.024250][ T8180]  ffff88809d60fb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   56.032294][ T8180] >ffff88809d60fc00: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc
[   56.041295][ T8180]                                   ^
[   56.046674][ T8180]  ffff88809d60fc80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   56.054730][ T8180]  ffff88809d60fd00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   56.062785][ T8180] ==================================================================
[   56.070827][ T8180] Disabling lock debugging due to kernel taint
[   56.078069][ T8180] Kernel panic - not syncing: panic_on_warn set ...
[   56.085622][ T8180] CPU: 1 PID: 8180 Comm: syz-executor553 Tainted: G    B             5.4.0-syzkaller #0
[   56.095320][ T8180] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.105371][ T8180] Call Trace:
[   56.108643][ T8180]  dump_stack+0x1fb/0x318
[   56.112951][ T8180]  panic+0x264/0x7a9
[   56.116831][ T8180]  ? __kasan_report+0x195/0x1c0
[   56.121668][ T8180]  ? trace_hardirqs_on+0x34/0x80
[   56.126581][ T8180]  ? __kasan_report+0x195/0x1c0
[   56.131424][ T8180]  __kasan_report+0x1bb/0x1c0
[   56.136242][ T8180]  ? lockdep_hardirqs_on+0x2f1/0x7d0
[   56.141523][ T8180]  ? pipe_write+0x579/0x1130
[   56.146094][ T8180]  kasan_report+0x26/0x50
[   56.150409][ T8180]  __asan_report_store8_noabort+0x17/0x20
[   56.156115][ T8180]  pipe_write+0x579/0x1130
[   56.160514][ T8180]  __vfs_write+0x5a1/0x740
[   56.165463][ T8180]  vfs_write+0x275/0x590
[   56.170044][ T8180]  ksys_write+0x117/0x220
[   56.174367][ T8180]  __x64_sys_write+0x7b/0x90
[   56.178946][ T8180]  do_syscall_64+0xf7/0x1c0
[   56.183442][ T8180]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   56.189334][ T8180] RIP: 0033:0x445879
[   56.193206][ T8180] Code: e8 ec bc 02 00 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 cb 11 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   56.212809][ T8180] RSP: 002b:00007fb3dea9edb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   56.221203][ T8180] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 0000000000445879
[   56.229153][ T8180] RDX: 00000000fffffef3 RSI: 00000000200001c0 RDI: 0000000000000004
[   56.237185][ T8180] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000
[   56.245999][ T8180] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac2c
[   56.253964][ T8180] R13: 00007ffe63472c0f R14: 00007fb3dea9f9c0 R15: 0000000000000000
[   56.263365][ T8180] Kernel Offset: disabled
[   56.267714][ T8180] Rebooting in 86400 seconds..