usb 7-1: Direct firmware load for ueagle-atm/adi930.fw failed with error -2 usb 7-1: Falling back to sysfs fallback for: ueagle-atm/adi930.fw ================================================================== BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:71 [inline] BUG: KASAN: use-after-free in atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] BUG: KASAN: use-after-free in kernfs_get.part.0+0x17/0x80 fs/kernfs/dir.c:496 Read of size 4 at addr ffff88806198e040 by task kworker/0:5/3782 CPU: 0 PID: 3782 Comm: kworker/0:5 Not tainted 5.17.0-rc8-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Workqueue: events request_firmware_work_func Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x8d/0x303 mm/kasan/report.c:255 __kasan_report mm/kasan/report.c:442 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:459 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:71 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] kernfs_get.part.0+0x17/0x80 fs/kernfs/dir.c:496 kernfs_get+0x1b/0x30 fs/kernfs/dir.c:495 sysfs_get include/linux/sysfs.h:635 [inline] create_dir lib/kobject.c:111 [inline] kobject_add_internal+0x5c3/0xa60 lib/kobject.c:255 kobject_add_varg lib/kobject.c:390 [inline] kobject_add+0x150/0x1c0 lib/kobject.c:442 class_dir_create_and_add drivers/base/core.c:2942 [inline] get_device_parent+0x3d7/0x590 drivers/base/core.c:2997 device_add+0x2a8/0x1e20 drivers/base/core.c:3326 fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:512 [inline] fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:588 [inline] firmware_fallback_sysfs+0x402/0xe70 drivers/base/firmware_loader/fallback.c:664 _request_firmware+0xb97/0xfe0 drivers/base/firmware_loader/main.c:774 request_firmware_work_func+0xdd/0x230 drivers/base/firmware_loader/main.c:1020 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 worker_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Allocated by task 3782: 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:436 [inline] __kasan_slab_alloc+0x85/0xb0 mm/kasan/common.c:469 kasan_slab_alloc include/linux/kasan.h:260 [inline] slab_post_alloc_hook mm/slab.h:732 [inline] slab_alloc mm/slab.c:3315 [inline] kmem_cache_alloc+0x265/0x560 mm/slab.c:3499 kmem_cache_zalloc include/linux/slab.h:704 [inline] __kernfs_new_node+0xd4/0x8b0 fs/kernfs/dir.c:585 kernfs_new_node fs/kernfs/dir.c:647 [inline] kernfs_create_dir_ns+0x9c/0x220 fs/kernfs/dir.c:994 sysfs_create_dir_ns+0x127/0x290 fs/sysfs/dir.c:59 create_dir lib/kobject.c:89 [inline] kobject_add_internal+0x2d2/0xa60 lib/kobject.c:255 kobject_add_varg lib/kobject.c:390 [inline] kobject_add+0x150/0x1c0 lib/kobject.c:442 class_dir_create_and_add drivers/base/core.c:2942 [inline] get_device_parent+0x3d7/0x590 drivers/base/core.c:2997 device_add+0x2a8/0x1e20 drivers/base/core.c:3326 fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:512 [inline] fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:588 [inline] firmware_fallback_sysfs+0x402/0xe70 drivers/base/firmware_loader/fallback.c:664 _request_firmware+0xb97/0xfe0 drivers/base/firmware_loader/main.c:774 request_firmware_work_func+0xdd/0x230 drivers/base/firmware_loader/main.c:1020 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 worker_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Freed by task 22597: 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:366 [inline] ____kasan_slab_free+0xff/0x140 mm/kasan/common.c:328 kasan_slab_free include/linux/kasan.h:236 [inline] __cache_free mm/slab.c:3437 [inline] kmem_cache_free.part.0+0x91/0x200 mm/slab.c:3733 kernfs_put.part.0+0x2c4/0x540 fs/kernfs/dir.c:539 kernfs_put+0x42/0x50 fs/kernfs/dir.c:513 __kernfs_remove+0x7a3/0xb20 fs/kernfs/dir.c:1388 kernfs_remove+0x6d/0x90 fs/kernfs/dir.c:1403 sysfs_remove_dir+0xc1/0x100 fs/sysfs/dir.c:101 __kobject_del+0xe2/0x200 lib/kobject.c:620 kobject_del lib/kobject.c:643 [inline] kobject_del+0x3c/0x60 lib/kobject.c:635 device_del+0x81c/0xc80 drivers/base/core.c:3603 usb_disconnect.cold+0x4ba/0x78e drivers/usb/core/hub.c:2254 hub_port_connect drivers/usb/core/hub.c:5202 [inline] hub_port_connect_change drivers/usb/core/hub.c:5502 [inline] port_event drivers/usb/core/hub.c:5660 [inline] hub_event+0x1e39/0x44d0 drivers/usb/core/hub.c:5742 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 process_scheduled_works kernel/workqueue.c:2370 [inline] worker_thread+0x833/0x1110 kernel/workqueue.c:2456 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 The buggy address belongs to the object at ffff88806198e040 which belongs to the cache kernfs_node_cache of size 168 The buggy address is located 0 bytes inside of 168-byte region [ffff88806198e040, ffff88806198e0e8) The buggy address belongs to the page: page:ffffea0001866380 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88806198e210 pfn:0x6198e flags: 0x4fff00000000200(slab|node=1|zone=1|lastcpupid=0x7ff) raw: 04fff00000000200 ffffea0001bcedc8 ffff888040211740 ffff8880402a4100 raw: ffff88806198e210 ffff88806198e040 0000000100000003 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 0x140cc0(GFP_USER|__GFP_COMP), pid 31866, ts 1125894621781, free_ts 1116947407047 prep_new_page mm/page_alloc.c:2434 [inline] get_page_from_freelist+0xa72/0x2f50 mm/page_alloc.c:4165 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5389 __alloc_pages_node include/linux/gfp.h:572 [inline] kmem_getpages mm/slab.c:1378 [inline] cache_grow_begin+0x75/0x390 mm/slab.c:2584 fallback_alloc+0x1e4/0x2e0 mm/slab.c:3132 __do_cache_alloc mm/slab.c:3274 [inline] slab_alloc mm/slab.c:3308 [inline] kmem_cache_alloc+0x367/0x560 mm/slab.c:3499 kmem_cache_zalloc include/linux/slab.h:704 [inline] __kernfs_new_node+0xd4/0x8b0 fs/kernfs/dir.c:585 kernfs_new_node+0x93/0x120 fs/kernfs/dir.c:647 __kernfs_create_file+0x51/0x350 fs/kernfs/file.c:987 sysfs_add_file_mode_ns+0x20f/0x3f0 fs/sysfs/file.c:294 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x322/0xb10 fs/sysfs/group.c:148 internal_create_groups.part.0+0x90/0x140 fs/sysfs/group.c:188 internal_create_groups fs/sysfs/group.c:184 [inline] sysfs_create_groups+0x25/0x50 fs/sysfs/group.c:214 create_dir lib/kobject.c:100 [inline] kobject_add_internal+0x583/0xa60 lib/kobject.c:255 kobject_add_varg lib/kobject.c:390 [inline] kobject_init_and_add+0x101/0x160 lib/kobject.c:473 rx_queue_add_kobject net/core/net-sysfs.c:1050 [inline] net_rx_queue_update_kobjects+0x25b/0x510 net/core/net-sysfs.c:1101 register_queue_kobjects net/core/net-sysfs.c:1761 [inline] netdev_register_kobject+0x275/0x430 net/core/net-sysfs.c:2012 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1352 [inline] free_pcp_prepare+0x374/0x870 mm/page_alloc.c:1404 free_unref_page_prepare mm/page_alloc.c:3325 [inline] free_unref_page+0x19/0x690 mm/page_alloc.c:3404 slab_destroy mm/slab.c:1630 [inline] slabs_destroy+0x89/0xc0 mm/slab.c:1650 __cache_free_alien mm/slab.c:789 [inline] cache_free_alien mm/slab.c:805 [inline] ___cache_free+0x1cf/0x600 mm/slab.c:3465 qlink_free mm/kasan/quarantine.c:157 [inline] qlist_free_all+0x50/0x1a0 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x97/0xb0 mm/kasan/common.c:446 kasan_slab_alloc include/linux/kasan.h:260 [inline] slab_post_alloc_hook mm/slab.h:732 [inline] slab_alloc mm/slab.c:3315 [inline] kmem_cache_alloc+0x265/0x560 mm/slab.c:3499 getname_flags.part.0+0x50/0x4f0 fs/namei.c:138 getname_flags+0x9a/0xe0 include/linux/audit.h:323 user_path_at_empty+0x2b/0x60 fs/namei.c:2850 user_path_at include/linux/namei.h:57 [inline] ksys_umount fs/namespace.c:1809 [inline] __do_sys_umount fs/namespace.c:1817 [inline] __se_sys_umount fs/namespace.c:1815 [inline] __x64_sys_umount+0xf8/0x180 fs/namespace.c:1815 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+0x44/0xae Memory state around the buggy address: ffff88806198df00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88806198df80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff88806198e000: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ^ ffff88806198e080: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc ffff88806198e100: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb ==================================================================