================================================================== BUG: KASAN: use-after-free in __create_pipe include/linux/usb.h:1947 [inline] BUG: KASAN: use-after-free in send_packet+0xa2d/0xbc0 drivers/media/rc/imon.c:627 Read of size 4 at addr ffff888109a89000 by task syz-executor.0/10343 CPU: 1 PID: 10343 Comm: syz-executor.0 Not tainted 6.0.0-syzkaller-09039-ga6afa4199d3d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 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:317 [inline] print_report.cold+0x2ba/0x719 mm/kasan/report.c:433 kasan_report+0xb1/0x1e0 mm/kasan/report.c:495 __create_pipe include/linux/usb.h:1947 [inline] send_packet+0xa2d/0xbc0 drivers/media/rc/imon.c:627 vfd_write+0x2d9/0x550 drivers/media/rc/imon.c:991 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: 0033:0x7ff3acf365a9 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff3ac689168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff3ad057050 RCX: 00007ff3acf365a9 RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007ff3acf91580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd704cf11f R14: 00007ff3ac689300 R15: 0000000000022000 Allocated by task 7443: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:437 [inline] ____kasan_kmalloc mm/kasan/common.c:516 [inline] __kasan_kmalloc+0x81/0xa0 mm/kasan/common.c:525 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:733 [inline] usb_alloc_dev+0x51/0xf00 drivers/usb/core/usb.c:582 hub_port_connect drivers/usb/core/hub.c:5255 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5653 [inline] hub_event+0x214a/0x45e0 drivers/usb/core/hub.c:5735 process_one_work+0x991/0x1610 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:306 Freed by task 3338: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track+0x21/0x30 mm/kasan/common.c:45 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370 ____kasan_slab_free mm/kasan/common.c:367 [inline] ____kasan_slab_free+0x14a/0x1b0 mm/kasan/common.c:329 kasan_slab_free include/linux/kasan.h:200 [inline] slab_free_hook mm/slub.c:1759 [inline] slab_free_freelist_hook mm/slub.c:1785 [inline] slab_free mm/slub.c:3539 [inline] kfree+0xca/0x5c0 mm/slub.c:4567 device_release+0x9f/0x240 drivers/base/core.c:2330 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:3624 hub_port_connect drivers/usb/core/hub.c:5197 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5653 [inline] hub_event+0x1f86/0x45e0 drivers/usb/core/hub.c:5735 process_one_work+0x991/0x1610 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:306 Last potentially related work creation: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 __kasan_record_aux_stack+0x9f/0xb0 mm/kasan/generic.c:348 call_rcu+0x99/0x790 kernel/rcu/tree.c:2796 netlink_release+0xeff/0x1db0 net/netlink/af_netlink.c:815 __sock_release+0xcd/0x280 net/socket.c:650 sock_close+0x18/0x20 net/socket.c:1365 __fput+0x27c/0xa90 fs/file_table.c:320 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xad5/0x2930 kernel/exit.c:795 do_group_exit+0xd2/0x2f0 kernel/exit.c:925 __do_sys_exit_group kernel/exit.c:936 [inline] __se_sys_exit_group kernel/exit.c:934 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:934 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 Second to last potentially related work creation: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 __kasan_record_aux_stack+0x9f/0xb0 mm/kasan/generic.c:348 insert_work+0x48/0x350 kernel/workqueue.c:1358 __queue_work+0x625/0x1200 kernel/workqueue.c:1517 queue_work_on+0xee/0x110 kernel/workqueue.c:1545 queue_work include/linux/workqueue.h:503 [inline] kick_hub_wq+0x144/0x2a0 drivers/usb/core/hub.c:673 hub_activate+0x452/0x1ce0 drivers/usb/core/hub.c:1285 hub_resume+0xa6/0x3e0 drivers/usb/core/hub.c:3902 usb_resume_interface.part.0.isra.0+0x271/0x360 drivers/usb/core/driver.c:1359 usb_resume_interface drivers/usb/core/driver.c:1519 [inline] usb_resume_both+0x2a7/0x8d0 drivers/usb/core/driver.c:1519 __rpm_callback+0xc9/0x330 drivers/base/power/runtime.c:395 rpm_callback+0x1e3/0x230 drivers/base/power/runtime.c:522 rpm_resume+0x1031/0x1bd0 drivers/base/power/runtime.c:902 rpm_resume+0x769/0x1bd0 drivers/base/power/runtime.c:881 __pm_runtime_resume+0xb7/0x170 drivers/base/power/runtime.c:1160 pm_runtime_get_sync include/linux/pm_runtime.h:425 [inline] usb_autopm_get_interface+0x1b/0x50 drivers/usb/core/driver.c:1815 hub_event+0x25b/0x45e0 drivers/usb/core/hub.c:5693 process_one_work+0x991/0x1610 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:306 The buggy address belongs to the object at ffff888109a89000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 0 bytes inside of 2048-byte region [ffff888109a89000, ffff888109a89800) The buggy address belongs to the physical page: page:ffffea000426a200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109a88 head:ffffea000426a200 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head|node=0|zone=2) raw: 0200000000010200 ffffea0004627a00 dead000000000002 ffff888100042000 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 3544375092, free_ts 0 prep_new_page mm/page_alloc.c:2532 [inline] get_page_from_freelist+0x11cc/0x2a20 mm/page_alloc.c:4283 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5549 alloc_page_interleave+0x1e/0x1e0 mm/mempolicy.c:2103 alloc_pages+0x22f/0x270 mm/mempolicy.c:2265 alloc_slab_page mm/slub.c:1829 [inline] allocate_slab+0x27e/0x3d0 mm/slub.c:1974 new_slab mm/slub.c:2034 [inline] ___slab_alloc+0x7f1/0xe10 mm/slub.c:3036 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3123 slab_alloc_node mm/slub.c:3214 [inline] slab_alloc mm/slub.c:3256 [inline] kmem_cache_alloc_trace+0x2fb/0x3b0 mm/slub.c:3287 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:733 [inline] acpi_add_single_object+0xbf/0x1b00 drivers/acpi/scan.c:1813 acpi_bus_check_add+0x1a4/0x5c0 drivers/acpi/scan.c:2077 acpi_ns_walk_namespace+0x24c/0x42e drivers/acpi/acpica/nswalk.c:240 acpi_walk_namespace drivers/acpi/acpica/nsxfeval.c:606 [inline] acpi_walk_namespace+0xee/0x127 drivers/acpi/acpica/nsxfeval.c:554 acpi_bus_scan+0x171/0x1c0 drivers/acpi/scan.c:2427 acpi_scan_init+0x2f3/0x692 drivers/acpi/scan.c:2604 acpi_init+0x931/0x9dc drivers/acpi/bus.c:1417 do_one_initcall+0xfe/0x650 init/main.c:1296 page_owner free stack trace missing Memory state around the buggy address: ffff888109a88f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888109a88f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888109a89000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888109a89080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888109a89100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================