==================================================================
BUG: KASAN: slab-out-of-bounds in dns_resolver_preparse+0x910/0x9b0 net/dns_resolver/dns_key.c:127
Read of size 1 at addr ffff88800d71d7fc by task syz-executor.3/9807

CPU: 1 PID: 9807 Comm: syz-executor.3 Not tainted 5.10.207 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x167 lib/dump_stack.c:118
 print_address_description.constprop.0+0x1c/0x220 mm/kasan/report.c:377
 __kasan_report mm/kasan/report.c:537 [inline]
 kasan_report.cold+0x37/0x7c mm/kasan/report.c:554
 dns_resolver_preparse+0x910/0x9b0 net/dns_resolver/dns_key.c:127
 key_create_or_update+0x3e0/0xc30 security/keys/key.c:859
 __do_sys_add_key+0x215/0x430 security/keys/keyctl.c:134
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7
RIP: 0033:0x7efca117db19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efc9e6f3188 EFLAGS: 00000246 ORIG_RAX: 00000000000000f8
RAX: ffffffffffffffda RBX: 00007efca1290f60 RCX: 00007efca117db19
RDX: 0000000020000000 RSI: 0000000000000000 RDI: 0000000020000200
RBP: 00007efca11d7f6d R08: fffffffffffffffb R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcb8c9d91f R14: 00007efc9e6f3300 R15: 0000000000022000

Allocated by task 9807:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
 kasan_set_track mm/kasan/common.c:56 [inline]
 __kasan_kmalloc.constprop.0+0xc9/0xd0 mm/kasan/common.c:461
 kmalloc_node include/linux/slab.h:575 [inline]
 kvmalloc_node+0x119/0x170 mm/util.c:607
 kvmalloc include/linux/mm.h:765 [inline]
 __do_sys_add_key+0x311/0x430 security/keys/keyctl.c:116
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x62/0xc7

The buggy address belongs to the object at ffff88800d71d7f8
 which belongs to the cache kmalloc-8 of size 8
The buggy address is located 4 bytes inside of
 8-byte region [ffff88800d71d7f8, ffff88800d71d800)
The buggy address belongs to the page:
page:0000000057a7e54d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd71d
flags: 0x100000000000200(slab)
raw: 0100000000000200 ffffea000073f4c0 0000000e0000000e ffff888008041c80
raw: 0000000000000000 0000000080660066 00000001ffffffff ffff888008a96801
page dumped because: kasan: bad access detected
page->mem_cgroup:ffff888008a96801

Memory state around the buggy address:
 ffff88800d71d680: fc fc 00 fc fc fc fc fa fc fc fc fc 00 fc fc fc
 ffff88800d71d700: fc 00 fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc
>ffff88800d71d780: 00 fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc 04
                                                                ^
 ffff88800d71d800: fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc 00 fc
 ffff88800d71d880: fc fc fc 00 fc fc fc fc 00 fc fc fc fc 00 fc fc
==================================================================
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'.
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 40 00
blk_update_request: I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 32 prio class 0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
blk_update_request: I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Buffer I/O error on dev sr0, logical block 0, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
blk_update_request: I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Buffer I/O error on dev sr0, logical block 1, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
blk_update_request: I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Buffer I/O error on dev sr0, logical block 2, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
blk_update_request: I/O error, dev sr0, sector 3 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Buffer I/O error on dev sr0, logical block 3, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
blk_update_request: I/O error, dev sr0, sector 80 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Buffer I/O error on dev sr0, logical block 80, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
blk_update_request: I/O error, dev sr0, sector 81 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Buffer I/O error on dev sr0, logical block 81, async page read
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 01 00 00 01 00
blk_update_request: I/O error, dev sr0, sector 4 op 0x0:(READ) flags 0x0 phys_seg 4 prio class 0
Buffer I/O error on dev sr0, logical block 4, async page read
Buffer I/O error on dev sr0, logical block 5, async page read
Buffer I/O error on dev sr0, logical block 6, async page read
Buffer I/O error on dev sr0, logical block 7, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
blk_update_request: I/O error, dev sr0, sector 82 op 0x0:(READ) flags 0x0 phys_seg 6 prio class 0
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 02 00
blk_update_request: I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 8 prio class 0
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 14 00 00 02 00
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 02 00
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 14 00 00 02 00
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 02 00
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 14 00 00 02 00
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 02 00
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] 
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 14 00 00 02 00
Bluetooth: hci6: command 0x0405 tx timeout