loop5: p4 start 301 is beyond EOD, truncated netlink: 'syz-executor3': attribute type 4 has an invalid length. netlink: 'syz-executor3': attribute type 2 has an invalid length. netlink: 'syz-executor3': attribute type 1 has an invalid length. ================================================================== BUG: KASAN: slab-out-of-bounds in rmd160_final+0x211/0x250 crypto/rmd160.c:334 Write of size 4 at addr ffff8801b27d1ba0 by task syz-executor6/11866 CPU: 1 PID: 11866 Comm: syz-executor6 Not tainted 4.18.0-rc1+ #109 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_store4_noabort+0x17/0x20 mm/kasan/report.c:437 rmd160_final+0x211/0x250 crypto/rmd160.c:334 crypto_shash_final+0x104/0x260 crypto/shash.c:152 kdf_ctr security/keys/dh.c:186 [inline] keyctl_dh_compute_kdf security/keys/dh.c:217 [inline] __keyctl_dh_compute+0x1198/0x1be0 security/keys/dh.c:389 keyctl_dh_compute+0xc5/0x11f security/keys/dh.c:425 __do_sys_keyctl security/keys/keyctl.c:1741 [inline] __se_sys_keyctl security/keys/keyctl.c:1637 [inline] __x64_sys_keyctl+0x12a/0x3b0 security/keys/keyctl.c:1637 do_syscall_64+0x1b9/0x820 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:00007f8e4d868c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 00007f8e4d8696d4 RCX: 0000000000455b29 RDX: 00000000200004c0 RSI: 00000000200000c0 RDI: 0000000000000017 RBP: 000000000072bea0 R08: 0000000020000300 R09: 0000000000000000 R10: 00000000000000ce R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004bfd31 R14: 00000000004cee10 R15: 0000000000000000 Allocated by task 11866: 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 __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x14e/0x760 mm/slab.c:3727 kmalloc include/linux/slab.h:518 [inline] keyctl_dh_compute_kdf security/keys/dh.c:211 [inline] __keyctl_dh_compute+0x1000/0x1be0 security/keys/dh.c:389 keyctl_dh_compute+0xc5/0x11f security/keys/dh.c:425 __do_sys_keyctl security/keys/keyctl.c:1741 [inline] __se_sys_keyctl security/keys/keyctl.c:1637 [inline] __x64_sys_keyctl+0x12a/0x3b0 security/keys/keyctl.c:1637 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 10646: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528 __cache_free mm/slab.c:3498 [inline] kfree+0xd9/0x260 mm/slab.c:3813 free_bprm+0x1b1/0x210 fs/exec.c:1429 __do_execve_file.isra.35+0x1e29/0x2730 fs/exec.c:1830 do_execveat_common fs/exec.c:1866 [inline] do_execve fs/exec.c:1883 [inline] __do_sys_execve fs/exec.c:1964 [inline] __se_sys_execve fs/exec.c:1959 [inline] __x64_sys_execve+0x8f/0xc0 fs/exec.c:1959 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8801b27d1ac0 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 224 bytes inside of 256-byte region [ffff8801b27d1ac0, ffff8801b27d1bc0) The buggy address belongs to the page: page:ffffea0006c9f440 count:1 mapcount:0 mapping:ffff8801da8007c0 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea0006b69e08 ffffea00070fb0c8 ffff8801da8007c0 raw: 0000000000000000 ffff8801b27d10c0 000000010000000c 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801b27d1a80: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ffff8801b27d1b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8801b27d1b80: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8801b27d1c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801b27d1c80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc ==================================================================