EFER = 0x0000000000000d01 PAT = 0x0000000000000000 *** Control State *** PinBased=0000003f CPUBased=b5986dfa SecondaryExec=000000ca ================================================================== EntryControls=0000d1ff ExitControls=0023efff BUG: KASAN: slab-out-of-bounds in put_unaligned_be32 include/linux/unaligned/access_ok.h:60 [inline] BUG: KASAN: slab-out-of-bounds in sha1_base_finish include/crypto/sha1_base.h:102 [inline] BUG: KASAN: slab-out-of-bounds in sha1_finup+0x44e/0x4b0 arch/x86/crypto/sha1_ssse3_glue.c:70 Write of size 4 at addr ffff8801cfab9d18 by task syz-executor7/7226 CPU: 0 PID: 7226 Comm: syz-executor7 Not tainted 4.18.0-rc1+ #110 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ExceptionBitmap=00060042 PFECmask=00000000 PFECmatch=00000000 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 VMEntry: intr_info=00000000 errcode=00000000 ilen=00000000 print_address_description+0x6c/0x20b mm/kasan/report.c:256 VMExit: intr_info=80000306 errcode=00000000 ilen=00000003 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 reason=80000021 qualification=0000000000000000 put_unaligned_be32 include/linux/unaligned/access_ok.h:60 [inline] sha1_base_finish include/crypto/sha1_base.h:102 [inline] sha1_finup+0x44e/0x4b0 arch/x86/crypto/sha1_ssse3_glue.c:70 sha1_avx2_finup arch/x86/crypto/sha1_ssse3_glue.c:232 [inline] sha1_avx2_final+0x28/0x30 arch/x86/crypto/sha1_ssse3_glue.c:238 IDTVectoring: info=00000000 errcode=00000000 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 TSC Offset = 0xffffffd47662bbad EPT pointer = 0x00000001b168001e 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:00007f5833174c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 00007f58331756d4 RCX: 0000000000455b29 RDX: 0000000020000040 RSI: 0000000020000100 RDI: 0000000000000017 RBP: 000000000072bea0 R08: 0000000020c61fc8 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004bfe04 R14: 00000000004cf058 R15: 0000000000000000 Allocated by task 7226: 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 6106: 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 load_elf_binary+0x463e/0x5610 fs/binfmt_elf.c:1108 search_binary_handler+0x17d/0x570 fs/exec.c:1653 exec_binprm fs/exec.c:1695 [inline] __do_execve_file.isra.35+0x171d/0x2730 fs/exec.c:1819 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 ffff8801cfab9d00 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 24 bytes inside of 32-byte region [ffff8801cfab9d00, ffff8801cfab9d20) The buggy address belongs to the page: page:ffffea00073eae40 count:1 mapcount:0 mapping:ffff8801da8001c0 index:0xffff8801cfab9fc1 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea00073d5ec8 ffffea00073f4dc8 ffff8801da8001c0 raw: ffff8801cfab9fc1 ffff8801cfab9000 0000000100000002 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801cfab9c00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8801cfab9c80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc >ffff8801cfab9d00: 00 00 00 fc fc fc fc fc fb fb fb fb fc fc fc fc ^ ffff8801cfab9d80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8801cfab9e00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ==================================================================