================================================================== BUG: KASAN: slab-out-of-bounds in cougar_report_fixup+0x1a1/0x1e0 drivers/hid/hid-cougar.c:109 Read of size 1 at addr ffff88811e0908a2 by task kworker/1:5/4947 CPU: 1 UID: 0 PID: 4947 Comm: kworker/1:5 Not tainted 6.11.0-rc4-syzkaller-00047-gca7df2c7bb5f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: usb_hub_wq hub_event 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 cougar_report_fixup+0x1a1/0x1e0 drivers/hid/hid-cougar.c:109 hid_open_report+0x1b3/0x7c0 drivers/hid/hid-core.c:1235 hid_parse include/linux/hid.h:1118 [inline] cougar_probe+0x78/0x840 drivers/hid/hid-cougar.c:206 __hid_device_probe drivers/hid/hid-core.c:2674 [inline] hid_device_probe+0x2eb/0x490 drivers/hid/hid-core.c:2711 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532 device_add+0x114b/0x1a70 drivers/base/core.c:3682 hid_add_device+0x37f/0xa70 drivers/hid/hid-core.c:2857 usbhid_probe+0xd3b/0x1410 drivers/hid/usbhid/hid-core.c:1431 usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532 device_add+0x114b/0x1a70 drivers/base/core.c:3682 usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532 device_add+0x114b/0x1a70 drivers/base/core.c:3682 usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651 hub_port_connect drivers/usb/core/hub.c:5521 [inline] hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] port_event drivers/usb/core/hub.c:5821 [inline] hub_event+0x2e58/0x4f40 drivers/usb/core/hub.c:5903 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390 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 Allocated by task 4947: 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 kmemdup_noprof+0x29/0x60 mm/util.c:133 kmemdup_noprof include/linux/fortify-string.h:753 [inline] hid_open_report+0x133/0x7c0 drivers/hid/hid-core.c:1230 hid_parse include/linux/hid.h:1118 [inline] cougar_probe+0x78/0x840 drivers/hid/hid-cougar.c:206 __hid_device_probe drivers/hid/hid-core.c:2674 [inline] hid_device_probe+0x2eb/0x490 drivers/hid/hid-core.c:2711 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532 device_add+0x114b/0x1a70 drivers/base/core.c:3682 hid_add_device+0x37f/0xa70 drivers/hid/hid-core.c:2857 usbhid_probe+0xd3b/0x1410 drivers/hid/usbhid/hid-core.c:1431 usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532 device_add+0x114b/0x1a70 drivers/base/core.c:3682 usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532 device_add+0x114b/0x1a70 drivers/base/core.c:3682 usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651 hub_port_connect drivers/usb/core/hub.c:5521 [inline] hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] port_event drivers/usb/core/hub.c:5821 [inline] hub_event+0x2e58/0x4f40 drivers/usb/core/hub.c:5903 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390 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 The buggy address belongs to the object at ffff88811e0908a0 which belongs to the cache kmalloc-8 of size 8 The buggy address is located 0 bytes to the right of allocated 2-byte region [ffff88811e0908a0, ffff88811e0908a2) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11e090 flags: 0x200000000000000(node=0|zone=2) page_type: 0xfdffffff(slab) raw: 0200000000000000 ffff888100041500 dead000000000100 dead000000000122 raw: 0000000000000000 0000000080800080 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 0x152cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 7777, tgid 7777 (kworker/0:0), ts 710458402309, free_ts 710449479215 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1493 prep_new_page mm/page_alloc.c:1501 [inline] get_page_from_freelist+0x1311/0x25f0 mm/page_alloc.c:3439 __alloc_pages_noprof+0x21e/0x2290 mm/page_alloc.c:4695 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] alloc_slab_page+0x4e/0xf0 mm/slub.c:2321 allocate_slab mm/slub.c:2484 [inline] new_slab+0x84/0x260 mm/slub.c:2537 ___slab_alloc+0xdac/0x1870 mm/slub.c:3723 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3813 __slab_alloc_node mm/slub.c:3866 [inline] slab_alloc_node mm/slub.c:4025 [inline] __do_kmalloc_node mm/slub.c:4157 [inline] __kmalloc_node_track_caller_noprof+0x14e/0x3e0 mm/slub.c:4177 kstrdup+0x3c/0x70 mm/util.c:64 kstrdup_const+0x63/0x80 mm/util.c:87 __kernfs_new_node+0x9c/0x890 fs/kernfs/dir.c:620 kernfs_new_node+0x186/0x240 fs/kernfs/dir.c:700 kernfs_create_link+0xcc/0x240 fs/kernfs/symlink.c:39 sysfs_do_create_link_sd+0x90/0x140 fs/sysfs/symlink.c:44 sysfs_do_create_link fs/sysfs/symlink.c:80 [inline] sysfs_create_link+0x61/0xc0 fs/sysfs/symlink.c:92 device_add_class_symlinks drivers/base/core.c:3441 [inline] device_add+0x62e/0x1a70 drivers/base/core.c:3633 page last free pid 7777 tgid 7777 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 selinux_genfs_get_sid security/selinux/hooks.c:1343 [inline] inode_doinit_with_dentry+0xac4/0x12c0 security/selinux/hooks.c:1541 selinux_d_instantiate+0x26/0x30 security/selinux/hooks.c:6350 security_d_instantiate+0x57/0xf0 security/security.c:3942 d_instantiate+0x5c/0x90 fs/dcache.c:1887 debugfs_create_dir+0x1b5/0x5f0 fs/debugfs/inode.c:609 snd_card_init+0xa72/0x12b0 sound/core/init.c:363 snd_card_new+0x9d/0x120 sound/core/init.c:188 snd_usb_audio_create sound/usb/card.c:625 [inline] usb_audio_probe+0x1a4f/0x3c50 sound/usb/card.c:831 usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399 call_driver_probe drivers/base/dd.c:578 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029 Memory state around the buggy address: ffff88811e090780: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc ffff88811e090800: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc >ffff88811e090880: 02 fc fc fc 02 fc fc fc fa fc fc fc fa fc fc fc ^ ffff88811e090900: fa fc fc fc fa fc fc fc fa fc fc fc 06 fc fc fc ffff88811e090980: fa fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc ==================================================================