================================================================== BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_cb+0x1120/0x1130 drivers/net/wireless/ath/ath9k/hif_usb.c:686 Read of size 4 at addr ffff888074c6c2f4 by task swapper/1/0 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.18.0-syzkaller-12234-g50fd82b3a9a9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description+0x65/0x4b0 mm/kasan/report.c:313 print_report+0xf4/0x210 mm/kasan/report.c:429 kasan_report+0xfb/0x130 mm/kasan/report.c:491 ath9k_hif_usb_rx_cb+0x1120/0x1130 drivers/net/wireless/ath/ath9k/hif_usb.c:686 __usb_hcd_giveback_urb+0x369/0x530 drivers/usb/core/hcd.c:1670 dummy_timer+0x86b/0x3110 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0xf5/0x210 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers+0x76a/0x980 kernel/time/timer.c:1790 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803 __do_softirq+0x382/0x793 kernel/softirq.c:571 __irq_exit_rcu+0xec/0x170 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1b/0x20 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:22 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline] RIP: 0010:acpi_idle_do_entry drivers/acpi/processor_idle.c:554 [inline] RIP: 0010:acpi_idle_enter+0x43d/0x7c0 drivers/acpi/processor_idle.c:691 Code: ff e8 f7 e6 f4 fc 48 83 e3 08 44 8b 7c 24 04 0f 85 21 01 00 00 e8 d3 8b fb fc eb 0c e8 1c e2 f4 fc 0f 00 2d 95 b4 62 06 fb f4 <4c> 89 e3 48 c1 eb 03 42 80 3c 2b 00 74 08 4c 89 e7 e8 9d ca 47 fd RSP: 0018:ffffc90000187c00 EFLAGS: 00000286 RAX: ba19ac387f063400 RBX: 0000000000000000 RCX: ffffffff9153ce03 RDX: dffffc0000000000 RSI: ffffffff8a8d2320 RDI: ffffffff8ae98940 RBP: ffffc90000187cb0 R08: ffffffff8492aac9 R09: ffffed1002545761 R10: ffffed1002545761 R11: 1ffff11002545760 R12: ffffc90000187c40 R13: dffffc0000000000 R14: ffff888016d76800 R15: 0000000000000001 cpuidle_enter_state+0x517/0xed0 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x59/0x90 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x3d2/0x640 kernel/sched/idle.c:303 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:400 start_secondary+0xe4/0xf0 arch/x86/kernel/smpboot.c:266 secondary_startup_64_no_verify+0xcf/0xdb Allocated by task 0: (stack is not available) The buggy address belongs to the object at ffff888074c6c000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 756 bytes inside of 1024-byte region [ffff888074c6c000, ffff888074c6c400) The buggy address belongs to the physical page: page:ffffea0001d31a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x74c68 head:ffffea0001d31a00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888011c41dc0 raw: 0000000000000000 0000000080100010 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 3597, tgid 3597 (sshd), ts 51514992348, free_ts 51336386056 prep_new_page mm/page_alloc.c:2456 [inline] get_page_from_freelist+0x72b/0x7a0 mm/page_alloc.c:4198 __alloc_pages+0x259/0x560 mm/page_alloc.c:5426 alloc_slab_page+0x70/0xf0 mm/slub.c:1797 allocate_slab+0x5e/0x520 mm/slub.c:1942 new_slab mm/slub.c:2002 [inline] ___slab_alloc+0x41e/0xcd0 mm/slub.c:3002 __slab_alloc mm/slub.c:3089 [inline] slab_alloc_node mm/slub.c:3180 [inline] __kmalloc_node_track_caller+0x2bb/0x3f0 mm/slub.c:4950 kmalloc_reserve net/core/skbuff.c:354 [inline] __alloc_skb+0x11d/0x660 net/core/skbuff.c:426 alloc_skb_fclone include/linux/skbuff.h:1476 [inline] tcp_stream_alloc_skb+0x67/0x480 net/ipv4/tcp.c:862 tcp_sendmsg_locked+0xd64/0x3fc0 net/ipv4/tcp.c:1297 tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1448 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] sock_write_iter+0x3e7/0x560 net/socket.c:1108 call_write_iter include/linux/fs.h:2060 [inline] new_sync_write fs/read_write.c:504 [inline] vfs_write+0xa22/0xd40 fs/read_write.c:591 ksys_write+0x19b/0x2c0 fs/read_write.c:644 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1371 [inline] free_pcp_prepare+0x812/0x900 mm/page_alloc.c:1421 free_unref_page_prepare mm/page_alloc.c:3343 [inline] free_unref_page+0x7d/0x390 mm/page_alloc.c:3438 free_large_kmalloc+0xeb/0x1a0 mm/slub.c:3546 kfree+0x188/0x210 mm/slub.c:4551 device_release+0x98/0x1c0 kobject_cleanup+0x235/0x470 lib/kobject.c:673 ath9k_htc_probe_device+0xfe8/0x2090 drivers/net/wireless/ath/ath9k/htc_drv_init.c:976 ath9k_htc_hw_init+0x30/0x70 drivers/net/wireless/ath/ath9k/htc_hst.c:508 ath9k_hif_usb_firmware_cb+0x250/0x4d0 drivers/net/wireless/ath/ath9k/hif_usb.c:1245 request_firmware_work_func+0x198/0x270 drivers/base/firmware_loader/main.c:1039 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 Memory state around the buggy address: ffff888074c6c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888074c6c200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888074c6c280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888074c6c300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888074c6c380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ---------------- Code disassembly (best guess), 1 bytes skipped: 0: e8 f7 e6 f4 fc callq 0xfcf4e6fc 5: 48 83 e3 08 and $0x8,%rbx 9: 44 8b 7c 24 04 mov 0x4(%rsp),%r15d e: 0f 85 21 01 00 00 jne 0x135 14: e8 d3 8b fb fc callq 0xfcfb8bec 19: eb 0c jmp 0x27 1b: e8 1c e2 f4 fc callq 0xfcf4e23c 20: 0f 00 2d 95 b4 62 06 verw 0x662b495(%rip) # 0x662b4bc 27: fb sti 28: f4 hlt * 29: 4c 89 e3 mov %r12,%rbx <-- trapping instruction 2c: 48 c1 eb 03 shr $0x3,%rbx 30: 42 80 3c 2b 00 cmpb $0x0,(%rbx,%r13,1) 35: 74 08 je 0x3f 37: 4c 89 e7 mov %r12,%rdi 3a: e8 9d ca 47 fd callq 0xfd47cadc