================================================================== BUG: KASAN: slab-out-of-bounds in put_unaligned_be64 include/linux/unaligned/access_ok.h:65 [inline] BUG: KASAN: slab-out-of-bounds in sha512_base_finish include/crypto/sha512_base.h:127 [inline] BUG: KASAN: slab-out-of-bounds in sha512_final+0x34a/0x3e0 crypto/sha512_generic.c:153 Write of size 8 at addr ffff8801cd443db0 by task syz-executor6/26644 CPU: 0 PID: 26644 Comm: syz-executor6 Not tainted 4.18.0-rc1+ #16 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_store8_noabort+0x17/0x20 mm/kasan/report.c:438 put_unaligned_be64 include/linux/unaligned/access_ok.h:65 [inline] sha512_base_finish include/crypto/sha512_base.h:127 [inline] sha512_final+0x34a/0x3e0 crypto/sha512_generic.c:153 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 compat_keyctl_dh_compute+0x2d0/0x400 security/keys/compat_dh.c:39 __do_compat_sys_keyctl security/keys/compat.c:136 [inline] __se_compat_sys_keyctl security/keys/compat.c:59 [inline] __ia32_compat_sys_keyctl+0x137/0x3b0 security/keys/compat.c:59 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f21cb9 Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f5f1d0ac EFLAGS: 00000282 ORIG_RAX: 0000000000000120 RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 0000000020000080 RDX: 00000000200004c0 RSI: 00000000000000a6 RDI: 0000000020000600 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 26644: 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 compat_keyctl_dh_compute+0x2d0/0x400 security/keys/compat_dh.c:39 __do_compat_sys_keyctl security/keys/compat.c:136 [inline] __se_compat_sys_keyctl security/keys/compat.c:59 [inline] __ia32_compat_sys_keyctl+0x137/0x3b0 security/keys/compat.c:59 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 Freed by task 24594: 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 snd_seq_oss_readq_delete+0x3e/0x50 sound/core/seq/oss/seq_oss_readq.c:79 free_devinfo+0x8b/0xb0 sound/core/seq/oss/seq_oss_init.c:408 port_delete+0xdd/0x1b0 sound/core/seq/seq_ports.c:273 snd_seq_delete_port+0x3cb/0x4a0 sound/core/seq/seq_ports.c:303 snd_seq_ioctl_delete_port+0xba/0x190 sound/core/seq/seq_clientmgr.c:1325 snd_seq_kernel_client_ctl+0x15a/0x190 sound/core/seq/seq_clientmgr.c:2360 snd_seq_event_port_detach+0xfb/0x160 sound/core/seq/seq_ports.c:705 delete_port+0x7d/0xc0 sound/core/seq/oss/seq_oss_init.c:354 snd_seq_oss_release+0xf2/0x130 sound/core/seq/oss/seq_oss_init.c:433 odev_release+0x52/0x70 sound/core/seq/oss/seq_oss.c:153 __fput+0x35b/0x8b0 fs/file_table.c:209 ____fput+0x15/0x20 fs/file_table.c:243 task_work_run+0x1ec/0x2a0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xf9d/0x2750 kernel/exit.c:865 do_group_exit+0x177/0x440 kernel/exit.c:968 __do_sys_exit_group kernel/exit.c:979 [inline] __se_sys_exit_group kernel/exit.c:977 [inline] __ia32_sys_exit_group+0x3e/0x50 kernel/exit.c:977 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 The buggy address belongs to the object at ffff8801cd443d00 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 176 bytes inside of 192-byte region [ffff8801cd443d00, ffff8801cd443dc0) The buggy address belongs to the page: page:ffffea00073510c0 count:1 mapcount:0 mapping:ffff8801da800040 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea000739ddc8 ffffea0007360248 ffff8801da800040 raw: 0000000000000000 ffff8801cd443000 0000000100000010 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801cd443c80: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc ffff8801cd443d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8801cd443d80: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc ^ ffff8801cd443e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801cd443e80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================