================================================================== BUG: KASAN: slab-use-after-free in usb_endpoint_xfer_isoc include/uapi/linux/usb/ch9.h:563 [inline] BUG: KASAN: slab-use-after-free in raw_ioctl_ep_set_clear_halt_wedge+0x4be/0x7c0 drivers/usb/gadget/legacy/raw_gadget.c:1012 Read of size 1 at addr ffff888111d99f63 by task syz.2.7156/32084 CPU: 0 UID: 0 PID: 32084 Comm: syz.2.7156 Not tainted 6.11.0-rc6-syzkaller-g35f4a629641b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc3/0x620 mm/kasan/report.c:488 kasan_report+0xd9/0x110 mm/kasan/report.c:601 usb_endpoint_xfer_isoc include/uapi/linux/usb/ch9.h:563 [inline] raw_ioctl_ep_set_clear_halt_wedge+0x4be/0x7c0 drivers/usb/gadget/legacy/raw_gadget.c:1012 raw_ioctl+0x105/0x2b90 drivers/usb/gadget/legacy/raw_gadget.c:1350 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __x64_sys_ioctl+0x193/0x220 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f258ddd9eb9 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f258ca15038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f258df76130 RCX: 00007f258ddd9eb9 RDX: 0000000000000000 RSI: 000000004004550d RDI: 0000000000000003 RBP: 00007f258de4793e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f258df76130 R15: 00007ffddf3b5a28 Allocated by task 32084: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:4158 [inline] __kmalloc_node_track_caller_noprof+0x1ff/0x3e0 mm/slub.c:4177 memdup_user+0x2a/0xd0 mm/util.c:226 raw_ioctl_ep_enable drivers/usb/gadget/legacy/raw_gadget.c:847 [inline] raw_ioctl+0xbca/0x2b90 drivers/usb/gadget/legacy/raw_gadget.c:1318 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __x64_sys_ioctl+0x193/0x220 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 32080: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579 poison_slab_object+0xf7/0x160 mm/kasan/common.c:240 __kasan_slab_free+0x14/0x30 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2252 [inline] slab_free mm/slub.c:4473 [inline] kfree+0x10b/0x380 mm/slub.c:4594 dev_free+0x446/0x700 drivers/usb/gadget/legacy/raw_gadget.c:225 kref_put include/linux/kref.h:65 [inline] raw_release+0x16e/0x2c0 drivers/usb/gadget/legacy/raw_gadget.c:473 __fput+0x408/0xbb0 fs/file_table.c:422 __fput_sync+0x47/0x50 fs/file_table.c:507 __do_sys_close fs/open.c:1566 [inline] __se_sys_close fs/open.c:1551 [inline] __x64_sys_close+0x86/0x100 fs/open.c:1551 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888111d99f60 which belongs to the cache kmalloc-16 of size 16 The buggy address is located 3 bytes inside of freed 16-byte region [ffff888111d99f60, ffff888111d99f70) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888111d99d80 pfn:0x111d99 anon flags: 0x200000000000000(node=0|zone=2) page_type: 0xfdffffff(slab) raw: 0200000000000000 ffff888100041640 0000000000000000 dead000000000001 raw: ffff888111d99d80 000000000080005c 00000001fdffffff 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 0x1d2cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4935, tgid 4935 (kworker/1:4), ts 393657677528, free_ts 349504519524 create_dummy_stack mm/page_owner.c:94 [inline] register_dummy_stack+0x8a/0xd0 mm/page_owner.c:100 init_page_owner+0x48/0xbe0 mm/page_owner.c:118 invoke_init_callbacks mm/page_ext.c:148 [inline] page_ext_init+0x725/0xbf0 mm/page_ext.c:497 mm_core_init+0x202/0x240 mm/mm_init.c:2673 page last free pid 4943 tgid 4943 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1094 [inline] free_unref_page+0x698/0xce0 mm/page_alloc.c:2612 kasan_depopulate_vmalloc_pte+0x63/0x80 mm/kasan/shadow.c:408 apply_to_pte_range mm/memory.c:2797 [inline] apply_to_pmd_range mm/memory.c:2841 [inline] apply_to_pud_range mm/memory.c:2877 [inline] apply_to_p4d_range mm/memory.c:2913 [inline] __apply_to_page_range+0x795/0xdd0 mm/memory.c:2947 kasan_release_vmalloc+0xac/0xc0 mm/kasan/shadow.c:525 purge_vmap_node+0x3fc/0x920 mm/vmalloc.c:2208 __purge_vmap_area_lazy+0x9ca/0xc10 mm/vmalloc.c:2290 drain_vmap_area_work+0x27/0x40 mm/vmalloc.c:2324 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Memory state around the buggy address: ffff888111d99e00: 00 00 fc fc 00 01 fc fc fa fb fc fc 00 00 fc fc ffff888111d99e80: fa fb fc fc 00 05 fc fc 00 00 fc fc fa fb fc fc >ffff888111d99f00: fa fb fc fc 00 06 fc fc fa fb fc fc fa fb fc fc ^ ffff888111d99f80: 00 00 fc fc fa fb fc fc 00 00 fc fc fa fb fc fc ffff888111d9a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================