==================================================================
BUG: KASAN: out-of-bounds in atomic_read include/asm-generic/atomic-instrumented.h:21 [inline]
BUG: KASAN: out-of-bounds in refcount_read include/linux/refcount.h:42 [inline]
BUG: KASAN: out-of-bounds in check_net include/net/net_namespace.h:236 [inline]
BUG: KASAN: out-of-bounds in rds_destroy_pending net/rds/rds.h:897 [inline]
BUG: KASAN: out-of-bounds in rds_cong_queue_updates+0x255/0x590 net/rds/cong.c:226
Read of size 4 at addr ffff880189e24184 by task syz-executor1/16442
CPU: 0 PID: 16442 Comm: syz-executor1 Not tainted 4.17.0+ #96
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+0x1b9/0x294 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
check_memory_region_inline mm/kasan/kasan.c:260 [inline]
check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267
kasan_check_read+0x11/0x20 mm/kasan/kasan.c:272
atomic_read include/asm-generic/atomic-instrumented.h:21 [inline]
refcount_read include/linux/refcount.h:42 [inline]
check_net include/net/net_namespace.h:236 [inline]
rds_destroy_pending net/rds/rds.h:897 [inline]
rds_cong_queue_updates+0x255/0x590 net/rds/cong.c:226
rds_recv_rcvbuf_delta.part.3+0x2b9/0x350 net/rds/recv.c:118
rds_recv_rcvbuf_delta net/rds/recv.c:377 [inline]
rds_recv_incoming+0x83f/0x1300 net/rds/recv.c:377
rds_loop_xmit+0x16a/0x340 net/rds/loop.c:82
rds_send_xmit+0x131b/0x2990 net/rds/send.c:355
rds_sendmsg+0x228d/0x2a30 net/rds/send.c:1243
sock_sendmsg_nosec net/socket.c:645 [inline]
sock_sendmsg+0xd5/0x120 net/socket.c:655
__sys_sendto+0x3d7/0x670 net/socket.c:1833
__do_sys_sendto net/socket.c:1845 [inline]
__se_sys_sendto net/socket.c:1841 [inline]
__x64_sys_sendto+0xe1/0x1a0 net/socket.c:1841
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455b29
Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa2f9e13c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fa2f9e146d4 RCX: 0000000000455b29
RDX: 0000000000000380 RSI: 00000000204b3fff RDI: 0000000000000014
RBP: 000000000072bea0 R08: 00000000202b4000 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004c0ea7 R14: 00000000004d0910 R15: 0000000000000000
The buggy address belongs to the page:
page:ffffea0006278900 count:0 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x2fffc0000000000()
raw: 02fffc0000000000 0000000000000000 dead000000000200 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff880189e24080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff880189e24100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff880189e24180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff880189e24200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff880189e24280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================