================================================================== BUG: KASAN: use-after-free in __create_pipe include/linux/usb.h:1990 [inline] BUG: KASAN: use-after-free in send_packet+0xa08/0xbe0 drivers/media/rc/imon.c:627 Read of size 4 at addr ffff888108ed9000 by task syz-executor.1/6333 CPU: 0 PID: 6333 Comm: syz-executor.1 Not tainted 6.2.0-rc3-syzkaller-00045-g82b0417e4bfc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:306 [inline] print_report+0x15e/0x45d mm/kasan/report.c:417 kasan_report+0xbb/0x1f0 mm/kasan/report.c:517 __create_pipe include/linux/usb.h:1990 [inline] send_packet+0xa08/0xbe0 drivers/media/rc/imon.c:627 vfd_write+0x2f8/0x570 drivers/media/rc/imon.c:989 vfs_write+0x2d7/0xdd0 fs/read_write.c:582 ksys_write+0x127/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb7b06a10c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb7af9d2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb7b07c1120 RCX: 00007fb7b06a10c9 RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007fb7b06fcae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff3bbb520f R14: 00007fb7af9d2300 R15: 0000000000022000 Allocated by task 5668: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45 kasan_set_track+0x21/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:371 [inline] __kasan_kmalloc+0x7a/0x90 mm/kasan/common.c:380 kmalloc include/linux/slab.h:580 [inline] kzalloc include/linux/slab.h:720 [inline] usb_alloc_dev+0x51/0xf00 drivers/usb/core/usb.c:582 hub_port_connect drivers/usb/core/hub.c:5307 [inline] hub_port_connect_change drivers/usb/core/hub.c:5549 [inline] port_event drivers/usb/core/hub.c:5709 [inline] hub_event+0x27d7/0x4810 drivers/usb/core/hub.c:5791 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Freed by task 5219: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45 kasan_set_track+0x21/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2a/0x40 mm/kasan/generic.c:518 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x144/0x1b0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook mm/slub.c:1807 [inline] slab_free mm/slub.c:3787 [inline] __kmem_cache_free+0x95/0x400 mm/slub.c:3800 device_release+0x9f/0x240 drivers/base/core.c:2331 kobject_cleanup lib/kobject.c:673 [inline] kobject_release lib/kobject.c:704 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1be/0x4c0 lib/kobject.c:721 put_device+0x1b/0x30 drivers/base/core.c:3586 hub_port_connect drivers/usb/core/hub.c:5244 [inline] hub_port_connect_change drivers/usb/core/hub.c:5549 [inline] port_event drivers/usb/core/hub.c:5709 [inline] hub_event+0x1fb1/0x4810 drivers/usb/core/hub.c:5791 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 The buggy address belongs to the object at ffff888108ed9000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 0 bytes inside of 2048-byte region [ffff888108ed9000, ffff888108ed9800) The buggy address belongs to the physical page: page:ffffea000423b600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x108ed8 head:ffffea000423b600 order:3 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0 anon flags: 0x200000000010200(slab|head|node=0|zone=2) raw: 0200000000010200 ffff888100042000 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 3052348737, free_ts 0 prep_new_page mm/page_alloc.c:2531 [inline] get_page_from_freelist+0x1263/0x2c00 mm/page_alloc.c:4283 __alloc_pages+0x1c7/0x5a0 mm/page_alloc.c:5549 alloc_page_interleave+0x1e/0x1e0 mm/mempolicy.c:2119 alloc_pages+0x22f/0x270 mm/mempolicy.c:2281 alloc_slab_page mm/slub.c:1851 [inline] allocate_slab+0x25f/0x350 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0xa91/0x1400 mm/slub.c:3193 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3292 __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] __kmem_cache_alloc_node+0x300/0x3d0 mm/slub.c:3491 kmalloc_trace+0x22/0x60 mm/slab_common.c:1062 kmalloc include/linux/slab.h:580 [inline] kzalloc include/linux/slab.h:720 [inline] acpi_os_allocate_zeroed include/acpi/platform/aclinuxex.h:57 [inline] acpi_ds_create_walk_state+0x88/0x1ff drivers/acpi/acpica/dswstate.c:518 acpi_ps_execute_method+0x19d/0x61c drivers/acpi/acpica/psxface.c:134 acpi_ns_evaluate+0x6c7/0x966 drivers/acpi/acpica/nseval.c:205 acpi_ut_evaluate_object+0xf1/0x3f6 drivers/acpi/acpica/uteval.c:60 acpi_ut_execute_power_methods+0xd5/0x1e0 drivers/acpi/acpica/uteval.c:288 acpi_get_object_info+0x4e3/0x9dd drivers/acpi/acpica/nsxfname.c:366 acpi_set_pnp_ids drivers/acpi/scan.c:1342 [inline] acpi_init_device_object+0xcdd/0x18b0 drivers/acpi/scan.c:1769 page_owner free stack trace missing Memory state around the buggy address: ffff888108ed8f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888108ed8f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888108ed9000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888108ed9080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888108ed9100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================