random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
==================================================================
BUG: KASAN: global-out-of-bounds in mqueue_get_tree+0x2a2/0x2e0 ipc/mqueue.c:362
Read of size 8 at addr ffffffff885cef68 by task syz-executor013/5545
CPU: 0 PID: 5545 Comm: syz-executor013 Not tainted 4.19.0-rc3-next-20180912+ #72
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1d3/0x2c4 lib/dump_stack.c:113
print_address_description.cold.8+0x58/0x1ff mm/kasan/report.c:256
kasan_report_error mm/kasan/report.c:354 [inline]
kasan_report.cold.9+0x242/0x309 mm/kasan/report.c:412
__asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
mqueue_get_tree+0x2a2/0x2e0 ipc/mqueue.c:362
vfs_get_tree+0x1cb/0x5c0 fs/super.c:1787
mq_create_mount+0xe3/0x190 ipc/mqueue.c:415
mq_init_ns+0x15a/0x210 ipc/mqueue.c:1621
create_ipc_ns ipc/namespace.c:58 [inline]
copy_ipcs+0x3d2/0x580 ipc/namespace.c:84
create_new_namespaces+0x376/0x900 kernel/nsproxy.c:87
unshare_nsproxy_namespaces+0xc3/0x1f0 kernel/nsproxy.c:206
ksys_unshare+0x79c/0x10b0 kernel/fork.c:2535
__do_sys_unshare kernel/fork.c:2603 [inline]
__se_sys_unshare kernel/fork.c:2601 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:2601
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x446257
Code: 00 00 00 b8 63 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd d7 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 bd d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffe2677e8e8 EFLAGS: 00000217 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007ffe2677f450 RCX: 0000000000446257
RDX: 0000000000000000 RSI: 00007ffe2677e8f0 RDI: 0000000008000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000018
R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000403ea0
R13: 0000000000403f30 R14: 0000000000000000 R15: 0000000000000000
The buggy address belongs to the variable:
ipcns_operations+0x68/0xa00
Memory state around the buggy address:
ffffffff885cee00: fa fa fa fa 00 00 00 00 00 02 fa fa fa fa fa fa
ffffffff885cee80: 00 00 00 01 fa fa fa fa 04 fa fa fa fa fa fa fa
>ffffffff885cef00: 00 00 00 00 00 00 00 00 fa fa fa fa 03 fa fa fa
^
ffffffff885cef80: fa fa fa fa 07 fa fa fa fa fa fa fa 00 03 fa fa
ffffffff885cf000: fa fa fa fa 00 fa fa fa fa fa fa fa 00 04 fa fa
==================================================================