================================================================== BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:447 [inline] BUG: KASAN: slab-out-of-bounds in decrypt_internal+0x712/0x1bc0 net/tls/tls_sw.c:1475 Read of size 16 at addr ffff888011977660 by task syz-executor598/5897 CPU: 1 PID: 5897 Comm: syz-executor598 Not tainted 5.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x9a/0xcc lib/dump_stack.c:120 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:230 __kasan_report mm/kasan/report.c:396 [inline] kasan_report.cold+0x79/0xd5 mm/kasan/report.c:413 check_memory_region_inline mm/kasan/generic.c:179 [inline] check_memory_region+0x13d/0x180 mm/kasan/generic.c:185 memcpy+0x20/0x60 mm/kasan/shadow.c:64 memcpy include/linux/string.h:447 [inline] decrypt_internal+0x712/0x1bc0 net/tls/tls_sw.c:1475 decrypt_skb_update+0xf9/0xb60 net/tls/tls_sw.c:1555 tls_sw_recvmsg+0x4b6/0x13d0 net/tls/tls_sw.c:1826 inet_recvmsg+0xf2/0x480 net/ipv4/af_inet.c:848 sock_recvmsg_nosec net/socket.c:886 [inline] sock_recvmsg net/socket.c:904 [inline] sock_recvmsg net/socket.c:900 [inline] ____sys_recvmsg+0x25e/0x620 net/socket.c:2568 ___sys_recvmsg+0xe2/0x1a0 net/socket.c:2610 do_recvmmsg+0x1c8/0x540 net/socket.c:2710 __sys_recvmmsg net/socket.c:2789 [inline] __do_sys_recvmmsg net/socket.c:2812 [inline] __se_sys_recvmmsg net/socket.c:2805 [inline] __x64_sys_recvmmsg+0x19a/0x200 net/socket.c:2805 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f902135ff29 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd654500e8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f902135ff29 RDX: 0000000000000001 RSI: 0000000020002900 RDI: 0000000000000003 RBP: 00007f90213240d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9021324160 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 5897: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:401 [inline] ____kasan_kmalloc.constprop.0+0x82/0xa0 mm/kasan/common.c:429 kmalloc include/linux/slab.h:557 [inline] tls_set_sw_offload+0x7ba/0x13b0 net/tls/tls_sw.c:2456 do_tls_setsockopt_conf net/tls/tls_main.c:566 [inline] do_tls_setsockopt net/tls/tls_main.c:604 [inline] tls_setsockopt+0x92a/0xd40 net/tls/tls_main.c:624 __sys_setsockopt+0x1fd/0x4e0 net/socket.c:2115 __do_sys_setsockopt net/socket.c:2126 [inline] __se_sys_setsockopt net/socket.c:2123 [inline] __x64_sys_setsockopt+0xb5/0x150 net/socket.c:2123 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 The buggy address belongs to the object at ffff888011977660 which belongs to the cache kmalloc-16 of size 16 The buggy address is located 0 bytes inside of 16-byte region [ffff888011977660, ffff888011977670) The buggy address belongs to the page: page:00000000f046585f refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888011977720 pfn:0x11977 flags: 0xfff00000000200(slab) raw: 00fff00000000200 ffffea00052a1500 0000000500000005 ffff88800f441b40 raw: ffff888011977720 000000008080007a 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 219, ts 5856621958 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x144/0x1c0 mm/page_alloc.c:2297 prep_new_page mm/page_alloc.c:2306 [inline] get_page_from_freelist+0x1c6e/0x3f80 mm/page_alloc.c:3945 __alloc_pages_nodemask+0x2d6/0x730 mm/page_alloc.c:4995 alloc_pages include/linux/gfp.h:547 [inline] alloc_slab_page mm/slub.c:1618 [inline] allocate_slab+0x2b6/0x4a0 mm/slub.c:1758 new_slab mm/slub.c:1821 [inline] new_slab_objects mm/slub.c:2578 [inline] ___slab_alloc+0x476/0x790 mm/slub.c:2741 __slab_alloc.constprop.0+0x95/0xe0 mm/slub.c:2781 slab_alloc_node mm/slub.c:2857 [inline] __kmalloc_node+0x1b4/0x430 mm/slub.c:4029 kmalloc_array_node include/linux/slab.h:645 [inline] mempool_init_node+0x111/0x5c0 mm/mempool.c:189 mempool_init+0xd/0x10 mm/mempool.c:229 mempool_init_slab_pool include/linux/mempool.h:62 [inline] bioset_init+0x39b/0x720 block/bio.c:1594 blk_alloc_queue+0xc2/0x690 block/blk-core.c:534 blk_mq_init_queue_data block/blk-mq.c:3004 [inline] blk_mq_init_queue+0x35/0xb0 block/blk-mq.c:3023 scsi_mq_alloc_queue+0x37/0x160 drivers/scsi/scsi_lib.c:1890 scsi_alloc_sdev+0x7c5/0xb50 drivers/scsi/scsi_scan.c:268 scsi_probe_and_add_lun+0x1a08/0x2ed0 drivers/scsi/scsi_scan.c:1077 __scsi_scan_target+0x1ba/0xb20 drivers/scsi/scsi_scan.c:1561 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1271 [inline] free_pcp_prepare+0x2cb/0x410 mm/page_alloc.c:1306 free_unref_page_prepare mm/page_alloc.c:3200 [inline] free_unref_page+0x12/0x1b0 mm/page_alloc.c:3248 mm_free_pgd kernel/fork.c:632 [inline] __mmdrop+0xb9/0x350 kernel/fork.c:683 free_bprm+0x5b/0x290 fs/exec.c:1477 kernel_execve+0x2cc/0x3e0 fs/exec.c:1971 call_usermodehelper_exec_async+0x2c1/0x500 kernel/umh.c:110 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Memory state around the buggy address: ffff888011977500: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc ffff888011977580: fa fb fc fc fa fb fc fc fb fb fc fc fb fb fc fc >ffff888011977600: fb fb fc fc fa fb fc fc fa fb fc fc 00 04 fc fc ^ ffff888011977680: fb fb fc fc fa fb fc fc fa fb fc fc fb fb fc fc ffff888011977700: fa fb fc fc fb fb fc fc 00 00 fc fc fb fb fc fc ==================================================================