sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
==================================================================
BUG: KASAN: slab-out-of-bounds in _copy_to_iter+0x493/0x1420
Read of size 4096 at addr ffff8880094a5000 by task syz-executor.1/4104

CPU: 1 PID: 4104 Comm: syz-executor.1 Not tainted 5.19.0-rc6-next-20220715 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
 <TASK>
 dump_stack_lvl+0x8b/0xb3
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
 print_report.cold+0x5e/0x5e5
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
 kasan_report+0xb1/0x1c0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
 kasan_check_range+0x35/0x1c0
 memcpy+0x20/0x60
 _copy_to_iter+0x493/0x1420
 seq_read_iter+0xdcb/0x12b0
 kernfs_fop_read_iter+0x529/0x720
 generic_file_splice_read+0x187/0x4d0
 do_splice_to+0x1bc/0x240
 splice_direct_to_actor+0x2ac/0x8c0
 do_splice_direct+0x1b8/0x290
 vfs_copy_file_range+0x8e8/0x1370
 __do_sys_copy_file_range+0x176/0x420
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc081ad9b19
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:00007fc07f04f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007fc081becf60 RCX: 00007fc081ad9b19
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007fc081b33f6d R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff72446aaf R14: 00007fc07f04f300 R15: 0000000000022000
 </TASK>

Allocated by task 4104:
 kasan_save_stack+0x1e/0x40
 __kasan_kmalloc+0x81/0xa0
 kvmalloc_node+0x41/0x1e0
 seq_read_iter+0x81c/0x12b0
 kernfs_fop_read_iter+0x529/0x720
 generic_file_splice_read+0x187/0x4d0
 do_splice_to+0x1bc/0x240
 splice_direct_to_actor+0x2ac/0x8c0
 do_splice_direct+0x1b8/0x290
 vfs_copy_file_range+0x8e8/0x1370
 __do_sys_copy_file_range+0x176/0x420
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff8880094a4000
 which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 0 bytes to the right of
 4096-byte region [ffff8880094a4000, ffff8880094a5000)

The buggy address belongs to the physical page:
page:000000005c78d040 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x94a0
head:000000005c78d040 order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff88800e761401
flags: 0x100000000010200(slab|head|node=0|zone=1)
raw: 0100000000010200 0000000000000000 dead000000000001 ffff88800784c280
raw: 0000000000000000 0000000080040004 00000001ffffffff ffff88800e761401
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880094a4f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880094a4f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880094a5000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffff8880094a5080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880094a5100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK 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