================================================================== BUG: KASAN: slab-out-of-bounds in __swab64p include/uapi/linux/swab.h:192 [inline] BUG: KASAN: slab-out-of-bounds in __be64_to_cpup include/uapi/linux/byteorder/little_endian.h:74 [inline] BUG: KASAN: slab-out-of-bounds in is_tx_ready include/net/tls.h:354 [inline] BUG: KASAN: slab-out-of-bounds in tls_write_space+0x29d/0x2d0 net/tls/tls_main.c:236 Read of size 8 at addr ffff8801d1adf030 by task syz-executor0/11458 CPU: 0 PID: 11458 Comm: syz-executor0 Not tainted 4.19.0-rc4+ #228 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+0x1c4/0x2b4 lib/dump_stack.c:113 print_address_description.cold.8+0x9/0x1ff 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 __swab64p include/uapi/linux/swab.h:192 [inline] __be64_to_cpup include/uapi/linux/byteorder/little_endian.h:74 [inline] is_tx_ready include/net/tls.h:354 [inline] tls_write_space+0x29d/0x2d0 net/tls/tls_main.c:236 tcp_new_space net/ipv4/tcp_input.c:5154 [inline] tcp_check_space+0x53f/0x920 net/ipv4/tcp_input.c:5165 tcp_data_snd_check net/ipv4/tcp_input.c:5175 [inline] tcp_rcv_established+0xde8/0x2120 net/ipv4/tcp_input.c:5656 tcp_v6_do_rcv+0x4b3/0x13c0 net/ipv6/tcp_ipv6.c:1326 sk_backlog_rcv include/net/sock.h:932 [inline] __release_sock+0x12f/0x3a0 net/core/sock.c:2336 release_sock+0xad/0x2c0 net/core/sock.c:2849 sk_stream_wait_memory+0x752/0x1290 net/core/stream.c:149 tls_sw_sendmsg+0x6bb/0x17a0 net/tls/tls_sw.c:846 inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 __sys_sendto+0x3d7/0x670 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: 1d b4 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 b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fea252b9c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fea252ba6d4 RCX: 0000000000457679 RDX: 000000000039a191 RSI: 00000000200005c0 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000020000000 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d5610 R14: 00000000004c3963 R15: 0000000000000000 Allocated by task 1: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:553 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490 kmem_cache_alloc_node+0x144/0x730 mm/slab.c:3644 blk_alloc_queue_node+0xed/0xe90 block/blk-core.c:1003 blk_alloc_queue+0x1a/0x20 block/blk-core.c:909 zram_add+0xb3/0x930 drivers/block/zram/zram_drv.c:1660 zram_init+0x12c/0x161 drivers/block/zram/zram_drv.c:1900 do_one_initcall+0x145/0x957 init/main.c:885 do_initcall_level init/main.c:953 [inline] do_initcalls init/main.c:961 [inline] do_basic_setup init/main.c:979 [inline] kernel_init_freeable+0x4bb/0x5ae init/main.c:1144 kernel_init+0x11/0x1b2 init/main.c:1063 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 Freed by task 0: (stack is not available) The buggy address belongs to the object at ffff8801d1adf040 which belongs to the cache request_queue of size 3600 The buggy address is located 16 bytes to the left of 3600-byte region [ffff8801d1adf040, ffff8801d1adfe50) The buggy address belongs to the page: page:ffffea000746b7c0 count:1 mapcount:0 mapping:ffff8801d7fc4180 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea000746b508 ffffea000746ba48 ffff8801d7fc4180 raw: 0000000000000000 ffff8801d1adf040 0000000100000001 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d1adef00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8801d1adef80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8801d1adf000: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ^ ffff8801d1adf080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801d1adf100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================