usb 6-1: ath: unknown panic pattern! ================================================================== 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 refcount_read include/linux/refcount.h:147 [inline] BUG: KASAN: use-after-free in skb_unref include/linux/skbuff.h:1190 [inline] BUG: KASAN: use-after-free in kfree_skb_reason+0x2f/0x110 net/core/skbuff.c:782 Read of size 4 at addr ffff88811e4594a4 by task syz-executor.3/1319 CPU: 1 PID: 1319 Comm: syz-executor.3 Not tainted 6.0.0-rc4-syzkaller-00066-g7eb2bf871454 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 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 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] refcount_read include/linux/refcount.h:147 [inline] skb_unref include/linux/skbuff.h:1190 [inline] kfree_skb_reason+0x2f/0x110 net/core/skbuff.c:782 kfree_skb include/linux/skbuff.h:1206 [inline] ath9k_hif_usb_reg_in_cb+0x4c5/0x640 drivers/net/wireless/ath/ath9k/hif_usb.c:770 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1671 usb_hcd_giveback_urb+0x380/0x430 drivers/usb/core/hcd.c:1754 dummy_timer+0x11ff/0x32c0 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x674/0xa80 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x1c0/0x9a9 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x113/0x170 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0033:0x7f027e29709a Code: 83 ff 03 74 3b 48 83 ec 28 b8 fa ff ff ff 83 ff 02 49 89 ca 0f 44 f8 64 8b 04 25 18 00 00 00 85 c0 75 2d b8 e6 00 00 00 0f 05 <89> c2 f7 da 3d 00 f0 ff ff b8 00 00 00 00 0f 47 c2 48 83 c4 28 c3 RSP: 002b:00007ffcdbe971f0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000001135 RCX: 00007f027e29709a RDX: 00007ffcdbe97230 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffcdbe972bc R08: 0000000000000b68 R09: 00007ffcdbec6080 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032 R13: 00000000002c8d43 R14: 0000000000000000 R15: 00007ffcdbe97320 Allocated by task 4075: 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_slab_alloc+0x66/0x80 mm/kasan/common.c:470 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:727 [inline] slab_alloc_node mm/slub.c:3243 [inline] kmem_cache_alloc_node+0x309/0x3c0 mm/slub.c:3293 __alloc_skb+0x210/0x2f0 net/core/skbuff.c:418 alloc_skb include/linux/skbuff.h:1257 [inline] ath9k_hif_usb_alloc_reg_in_urbs drivers/net/wireless/ath/ath9k/hif_usb.c:963 [inline] ath9k_hif_usb_alloc_urbs+0x91d/0x1050 drivers/net/wireless/ath/ath9k/hif_usb.c:1022 ath9k_hif_usb_dev_init drivers/net/wireless/ath/ath9k/hif_usb.c:1108 [inline] ath9k_hif_usb_firmware_cb+0x148/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1241 request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1107 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 1319: 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:1754 [inline] slab_free_freelist_hook mm/slub.c:1780 [inline] slab_free mm/slub.c:3534 [inline] kmem_cache_free+0xd3/0x620 mm/slub.c:3551 kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:710 kfree_skb_reason+0x85/0x110 include/linux/refcount.h:279 kfree_skb include/linux/skbuff.h:1206 [inline] ath9k_htc_rx_msg+0x1f0/0xb70 drivers/net/wireless/ath/ath9k/htc_hst.c:456 ath9k_hif_usb_reg_in_cb+0x1ac/0x640 drivers/net/wireless/ath/ath9k/hif_usb.c:739 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1671 usb_hcd_giveback_urb+0x380/0x430 drivers/usb/core/hcd.c:1754 dummy_timer+0x11ff/0x32c0 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x674/0xa80 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x1c0/0x9a9 kernel/softirq.c:571 The buggy address belongs to the object at ffff88811e4593c0 which belongs to the cache skbuff_head_cache of size 240 The buggy address is located 228 bytes inside of 240-byte region [ffff88811e4593c0, ffff88811e4594b0) The buggy address belongs to the physical page: page:ffffea0004791640 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11e459 flags: 0x200000000000200(slab|node=0|zone=2) raw: 0200000000000200 ffffea000478ed80 dead000000000002 ffff888100828500 raw: 0000000000000000 00000000000c000c 00000001ffffffff 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 0x112a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 1277, tgid 1277 (sshd), ts 2694200524312, free_ts 2693583792273 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:5515 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2270 alloc_slab_page mm/slub.c:1824 [inline] allocate_slab+0x27e/0x3d0 mm/slub.c:1969 new_slab mm/slub.c:2029 [inline] ___slab_alloc+0x7b4/0xda0 mm/slub.c:3031 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3118 slab_alloc_node mm/slub.c:3209 [inline] slab_alloc mm/slub.c:3251 [inline] __kmem_cache_alloc_lru mm/slub.c:3258 [inline] kmem_cache_alloc+0x3d6/0x4a0 mm/slub.c:3268 skb_clone+0x16e/0x3c0 net/core/skbuff.c:1543 dev_queue_xmit_nit+0x393/0xb00 net/core/dev.c:2265 xmit_one net/core/dev.c:3586 [inline] dev_hard_start_xmit+0xa4/0x880 net/core/dev.c:3606 sch_direct_xmit+0x25b/0x7a0 net/sched/sch_generic.c:342 __dev_xmit_skb net/core/dev.c:3817 [inline] __dev_queue_xmit+0x1479/0x38f0 net/core/dev.c:4222 dev_queue_xmit include/linux/netdevice.h:3008 [inline] neigh_hh_output include/net/neighbour.h:535 [inline] neigh_output include/net/neighbour.h:549 [inline] ip_finish_output2+0x1436/0x20b0 net/ipv4/ip_output.c:228 __ip_finish_output.part.0+0x1b7/0x350 net/ipv4/ip_output.c:306 __ip_finish_output net/ipv4/ip_output.c:294 [inline] ip_finish_output net/ipv4/ip_output.c:316 [inline] NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip_output+0x2f6/0x600 net/ipv4/ip_output.c:430 dst_output include/net/dst.h:451 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0x8de/0x1be0 net/ipv4/ip_output.c:532 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1449 [inline] free_pcp_prepare+0x5d2/0xb80 mm/page_alloc.c:1499 free_unref_page_prepare mm/page_alloc.c:3380 [inline] free_unref_page+0x19/0x420 mm/page_alloc.c:3476 __vunmap+0x85d/0xd30 mm/vmalloc.c:2696 __vfree+0x3c/0xd0 mm/vmalloc.c:2744 vfree+0x5a/0x90 mm/vmalloc.c:2775 hid_open_report+0x5fd/0x650 drivers/hid/hid-core.c:1301 hid_parse include/linux/hid.h:1100 [inline] isku_probe+0x97/0x420 drivers/hid/hid-roccat-isku.c:330 hid_device_probe+0x2bd/0x3f0 drivers/hid/hid-core.c:2598 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbd5/0x1e90 drivers/base/core.c:3517 Memory state around the buggy address: ffff88811e459380: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ffff88811e459400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88811e459480: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc ^ ffff88811e459500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88811e459580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc ==================================================================