binder: 13964:13971 transaction failed 29189/-3, size 40-8 line 2967 binder: 13964:13971 ioctl c0306201 20008000 returned -14 ================================================================== 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 sha256_base_finish include/crypto/sha256_base.h:124 [inline] BUG: KASAN: slab-out-of-bounds in sha256_finup+0x4bf/0x540 arch/x86/crypto/sha256_ssse3_glue.c:80 Write of size 4 at addr ffff8801ae8425c0 by task syz-executor0/13932 CPU: 0 PID: 13932 Comm: syz-executor0 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 put_unaligned_be32 include/linux/unaligned/access_ok.h:60 [inline] sha256_base_finish include/crypto/sha256_base.h:124 [inline] sha256_finup+0x4bf/0x540 arch/x86/crypto/sha256_ssse3_glue.c:80 sha256_avx2_finup arch/x86/crypto/sha256_ssse3_glue.c:245 [inline] sha256_avx2_final+0x28/0x30 arch/x86/crypto/sha256_ssse3_glue.c:250 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:00007f58869b0c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 00007f58869b16d4 RCX: 0000000000455b29 RDX: 0000000020000300 RSI: 00000000200002c0 RDI: 0000000000000017 RBP: 000000000072bea0 R08: 00000000200003c0 R09: 0000000000000000 R10: 0000000000000028 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004bfe04 R14: 00000000004cf058 R15: 0000000000000000 Allocated by task 13932: 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 12907: 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 ext4_ext_remove_space+0x14fc/0x4bb0 fs/ext4/extents.c:3051 ext4_ext_truncate+0x1d1/0x220 fs/ext4/extents.c:4638 ext4_truncate+0xef0/0x1670 fs/ext4/inode.c:4463 ext4_setattr+0x17e8/0x2af0 fs/ext4/inode.c:5563 notify_change+0xc0c/0x10f0 fs/attr.c:333 do_truncate+0x1ac/0x2b0 fs/open.c:63 handle_truncate fs/namei.c:2989 [inline] do_last fs/namei.c:3408 [inline] path_openat+0x31da/0x4e10 fs/namei.c:3540 do_filp_open+0x255/0x380 fs/namei.c:3574 do_sys_open+0x584/0x760 fs/open.c:1101 ksys_open include/linux/syscalls.h:1270 [inline] __do_sys_creat fs/open.c:1159 [inline] __se_sys_creat fs/open.c:1157 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1157 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 ffff8801ae842580 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 0 bytes to the right of 64-byte region [ffff8801ae842580, ffff8801ae8425c0) The buggy address belongs to the page: page:ffffea0006ba1080 count:1 mapcount:0 mapping:ffff8801da800340 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea0006b63708 ffffea0006af3348 ffff8801da800340 raw: 0000000000000000 ffff8801ae842000 0000000100000020 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801ae842480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8801ae842500: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff8801ae842580: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ^ ffff8801ae842600: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8801ae842680: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================