random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) ================================================================== 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 ffff8801ce694340 by task syz-executor222/4542 CPU: 1 PID: 4542 Comm: syz-executor222 Not tainted 4.18.0-rc2+ #19 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: 0023:0xf7f3bcb9 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:00000000ffd55dcc EFLAGS: 00000292 ORIG_RAX: 0000000000000120 RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 0000000020000100 RDX: 0000000020a53ffb RSI: 0000000000000018 RDI: 0000000020000140 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 4542: 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 1: 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 kobject_uevent_env+0x275/0x1110 lib/kobject_uevent.c:619 kobject_uevent+0x1f/0x30 lib/kobject_uevent.c:636 netdev_queue_add_kobject net/core/net-sysfs.c:1345 [inline] netdev_queue_update_kobjects+0x3ac/0x4f0 net/core/net-sysfs.c:1360 register_queue_kobjects net/core/net-sysfs.c:1402 [inline] netdev_register_kobject+0x299/0x380 net/core/net-sysfs.c:1608 register_netdevice+0x99f/0x11d0 net/core/dev.c:7999 bond_create+0xf5/0x157 drivers/net/bonding/bond_main.c:4783 bonding_init+0x165c/0x16fc drivers/net/bonding/bond_main.c:4855 do_one_initcall+0x127/0x913 init/main.c:884 do_initcall_level init/main.c:952 [inline] do_initcalls init/main.c:960 [inline] do_basic_setup init/main.c:978 [inline] kernel_init_freeable+0x49b/0x58e init/main.c:1135 kernel_init+0x11/0x1b3 init/main.c:1061 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 The buggy address belongs to the object at ffff8801ce694300 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 0 bytes to the right of 64-byte region [ffff8801ce694300, ffff8801ce694340) The buggy address belongs to the page: page:ffffea000739a500 count:1 mapcount:0 mapping:ffff8801da800340 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea00074c8508 ffff8801da801348 ffff8801da800340 raw: 0000000000000000 ffff8801ce694000 0000000100000020 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801ce694200: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8801ce694280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff8801ce694300: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ^ ffff8801ce694380: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff8801ce694400: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================