================================================================== BUG: KASAN: invalid-free in slab_free mm/slub.c:3712 [inline] BUG: KASAN: invalid-free in __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728 Free of addr ffff88810d861601 by task syz-executor124/305 CPU: 1 PID: 305 Comm: syz-executor124 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Call Trace: __dump_stack+0x21/0x24 lib/dump_stack.c:88 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106 print_address_description+0x71/0x200 mm/kasan/report.c:316 print_report+0x4a/0x60 mm/kasan/report.c:420 kasan_report_invalid_free+0xd5/0xf0 mm/kasan/report.c:489 ____kasan_slab_free+0x14f/0x180 mm/kasan/common.c:-1 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:250 kasan_slab_free include/linux/kasan.h:178 [inline] slab_free_hook mm/slub.c:1750 [inline] slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776 slab_free mm/slub.c:3712 [inline] __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728 kfree+0x6f/0xf0 mm/slab_common.c:990 f_uac2_opts_p_srate_store+0x220/0x2a0 drivers/usb/gadget/function/f_uac2.c:2078 flush_write_buffer fs/configfs/file.c:207 [inline] configfs_write_iter+0x323/0x410 fs/configfs/file.c:229 do_iter_readv_writev fs/read_write.c:-1 [inline] do_iter_write+0x65a/0xb30 fs/read_write.c:861 vfs_writev+0x339/0x5f0 fs/read_write.c:934 do_pwritev fs/read_write.c:1031 [inline] __do_sys_pwritev fs/read_write.c:1078 [inline] __se_sys_pwritev fs/read_write.c:1073 [inline] __x64_sys_pwritev+0x19b/0x2b0 fs/read_write.c:1073 x64_sys_call+0x695/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:297 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f80589e1cf9 Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 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 d8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe52d79b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000128 RAX: ffffffffffffffda RBX: d7ceab0f2931992c RCX: 00007f80589e1cf9 RDX: 0000000000000001 RSI: 0000200000000040 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000006 R09: 00007ffe52d79c58 R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffe52d79c48 R13: 0000000000000002 R14: 00007f8058a72ca0 R15: 0000000000000002 Allocated by task 305: kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:53 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:380 [inline] __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389 kasan_kmalloc include/linux/kasan.h:212 [inline] __do_kmalloc_node mm/slab_common.c:938 [inline] __kmalloc_node_track_caller+0xb1/0x1e0 mm/slab_common.c:958 kstrdup+0x3b/0x80 mm/util.c:66 f_uac2_opts_p_srate_store+0x11a/0x2a0 drivers/usb/gadget/function/f_uac2.c:2078 flush_write_buffer fs/configfs/file.c:207 [inline] configfs_write_iter+0x323/0x410 fs/configfs/file.c:229 do_iter_readv_writev fs/read_write.c:-1 [inline] do_iter_write+0x65a/0xb30 fs/read_write.c:861 vfs_writev+0x339/0x5f0 fs/read_write.c:934 do_pwritev fs/read_write.c:1031 [inline] __do_sys_pwritev fs/read_write.c:1078 [inline] __se_sys_pwritev fs/read_write.c:1073 [inline] __x64_sys_pwritev+0x19b/0x2b0 fs/read_write.c:1073 x64_sys_call+0x695/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:297 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 The buggy address belongs to the object at ffff88810d861600 which belongs to the cache kmalloc-16 of size 16 The buggy address is located 1 bytes inside of 16-byte region [ffff88810d861600, ffff88810d861610) The buggy address belongs to the physical page: page:ffffea0004361840 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10d861 flags: 0x4000000000000200(slab|zone=1) raw: 4000000000000200 ffffea0004361500 dead000000000002 ffff888100042480 raw: 0000000000000000 0000000080800080 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, tgid 1 (swapper/0), ts 2655920809, free_ts 0 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2673 prep_new_page+0x1c/0x110 mm/page_alloc.c:2680 get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4587 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5931 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1 allocate_slab mm/slub.c:1967 [inline] new_slab+0x98/0x3e0 mm/slub.c:2020 ___slab_alloc+0x70f/0xb70 mm/slub.c:3177 __slab_alloc+0x5e/0xa0 mm/slub.c:3263 slab_alloc_node mm/slub.c:3348 [inline] __kmem_cache_alloc_node+0x204/0x2d0 mm/slub.c:3423 __do_kmalloc_node mm/slab_common.c:937 [inline] __kmalloc_node_track_caller+0xa1/0x1e0 mm/slab_common.c:958 kvasprintf+0xe8/0x1a0 lib/kasprintf.c:25 kvasprintf_const+0xf2/0x240 lib/kasprintf.c:49 kobject_set_name_vargs+0x61/0x110 lib/kobject.c:265 dev_set_name+0xdf/0x130 drivers/base/core.c:3486 scsi_alloc_target+0x205/0xbe0 drivers/scsi/scsi_scan.c:510 __scsi_scan_target+0x168/0xc20 drivers/scsi/scsi_scan.c:1704 page_owner free stack trace missing Memory state around the buggy address: ffff88810d861500: fb fb fc fc fa fb fc fc fb fb fc fc fa fb fc fc ffff88810d861580: fb fb fc fc fb fb fc fc fb fb fc fc fb fb fc fc >ffff88810d861600: 00 02 fc fc fa fb fc fc fa fb fc fc fb fb fc fc ^ ffff88810d861680: fa fb fc fc fb fb fc fc fb fb fc fc fb fb fc fc ffff88810d861700: fb fb fc fc fa fb fc fc fa fb fc fc fb fb fc fc ==================================================================