random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead.
==================================================================
BUG: KASAN: slab-out-of-bounds in __lock_acquire+0x3829/0x5020 kernel/locking/lockdep.c:3314
Read of size 8 at addr ffff8801ad925e08 by task syz-executor884/4438
CPU: 0 PID: 4438 Comm: syz-executor884 Not tainted 4.18.0-rc6+ #167
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+0x1c9/0x2b4 lib/dump_stack.c:113
print_address_description+0x6c/0x20b mm/kasan/report.c:256
kasan_report_error mm/kasan/report.c:354 [inline]
kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
__asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
__lock_acquire+0x3829/0x5020 kernel/locking/lockdep.c:3314
lock_acquire+0x1e4/0x540 kernel/locking/lockdep.c:3924
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
_raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:168
spin_lock_bh include/linux/spinlock.h:315 [inline]
sock_hash_ctx_update_elem.isra.26+0xbef/0x14d0 kernel/bpf/sockmap.c:2381
sock_hash_update_elem+0x1e2/0x510 kernel/bpf/sockmap.c:2428
map_update_elem+0x72d/0xcb0 kernel/bpf/syscall.c:741
__do_sys_bpf kernel/bpf/syscall.c:2298 [inline]
__se_sys_bpf kernel/bpf/syscall.c:2269 [inline]
__x64_sys_bpf+0x32d/0x510 kernel/bpf/syscall.c:2269
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440449
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffd721a7e58 EFLAGS: 00000203 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440449
RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002
RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 00000000004002c8 R11: 0000000000000203 R12: 0000000000401cd0
R13: 0000000000401d60 R14: 0000000000000000 R15: 0000000000000000
Allocated by task 4438:
save_stack+0x43/0xd0 mm/kasan/kasan.c:448
set_track mm/kasan/kasan.c:460 [inline]
kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490
kmem_cache_alloc+0x12e/0x760 mm/slab.c:3554
kmem_cache_zalloc include/linux/slab.h:697 [inline]
kcm_attach net/kcm/kcmsock.c:1405 [inline]
kcm_attach_ioctl net/kcm/kcmsock.c:1490 [inline]
kcm_ioctl+0xd10/0x1930 net/kcm/kcmsock.c:1696
sock_do_ioctl+0xe4/0x3e0 net/socket.c:969
sock_ioctl+0x30d/0x680 net/socket.c:1093
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:500 [inline]
do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:684
ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701
__do_sys_ioctl fs/ioctl.c:708 [inline]
__se_sys_ioctl fs/ioctl.c:706 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:706
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Freed by task 0:
(stack is not available)
The buggy address belongs to the object at ffff8801ad925bc0
which belongs to the cache kcm_psock_cache of size 544
The buggy address is located 40 bytes to the right of
544-byte region [ffff8801ad925bc0, ffff8801ad925de0)
The buggy address belongs to the page:
page:ffffea0006b64900 count:1 mapcount:0 mapping:ffff8801cde561c0 index:0x0 compound_mapcount: 0
flags: 0x2fffc0000008100(slab|head)
raw: 02fffc0000008100 ffff8801cdf31448 ffff8801cdf31448 ffff8801cde561c0
raw: 0000000000000000 ffff8801ad924040 000000010000000b 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8801ad925d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff8801ad925d80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
>ffff8801ad925e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff8801ad925e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8801ad925f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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