================================================================== BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:642 [inline] BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_cb+0xea7/0x10d0 drivers/net/wireless/ath/ath9k/hif_usb.c:686 Read of size 4 at addr ffff88810edec2e8 by task kdevtmpfs/22 CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.19.0-rc7-syzkaller-00199-g8288c99fc263 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0xeb/0x495 mm/kasan/report.c:313 print_report mm/kasan/report.c:429 [inline] kasan_report.cold+0xf4/0x1c6 mm/kasan/report.c:491 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:642 [inline] ath9k_hif_usb_rx_cb+0xea7/0x10d0 drivers/net/wireless/ath/ath9k/hif_usb.c:686 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1670 usb_hcd_giveback_urb+0x380/0x430 drivers/usb/core/hcd.c:1753 dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x679/0xa80 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+0x288/0x9a5 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+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:devtmpfs_work_loop drivers/base/devtmpfs.c:406 [inline] RIP: 0010:devtmpfsd+0xc7/0x2a3 drivers/base/devtmpfs.c:448 Code: 3e 47 bb 05 00 00 00 00 e8 f9 77 01 00 e8 04 6a 56 fb 48 89 d8 48 c1 e8 03 80 3c 28 00 74 08 48 89 df e8 5f 5f 8b fb 48 8b 03 <48> 8d bb 80 00 00 00 48 89 04 24 48 89 f8 48 c1 e8 03 80 3c 28 00 RSP: 0018:ffffc90000187ec0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc9000006f4b8 RCX: 0000000000000000 RDX: ffff888100373900 RSI: ffffffff85eebeec RDI: 0000000000000001 RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8806d503 R10: fffffbfff100daa0 R11: 0000000000000001 R12: ffff888100373900 R13: 0000000000000000 R14: ffff88810ca7c480 R15: ffff88811b867000 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Allocated by task 0: (stack is not available) The buggy address belongs to the object at ffff88810edec000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 744 bytes inside of 1024-byte region [ffff88810edec000, ffff88810edec400) The buggy address belongs to the physical page: page:ffffea00043b7a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10ede8 head:ffffea00043b7a00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head|node=0|zone=2) raw: 0200000000010200 0000000000000000 dead000000000122 ffff888100041dc0 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 1168, tgid 1168 (klogd), ts 1236133614021, free_ts 1236127267708 prep_new_page mm/page_alloc.c:2456 [inline] get_page_from_freelist+0x138c/0x27a0 mm/page_alloc.c:4198 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5426 alloc_pages+0x1aa/0x310 mm/mempolicy.c:2272 alloc_slab_page mm/slub.c:1824 [inline] allocate_slab+0x26c/0x3c0 mm/slub.c:1969 new_slab mm/slub.c:2029 [inline] ___slab_alloc+0x98f/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_trace+0x2fd/0x3b0 mm/slub.c:3282 kmalloc include/linux/slab.h:600 [inline] syslog_print+0xc7/0x580 kernel/printk/printk.c:1503 do_syslog.part.0+0x1db/0x5f0 kernel/printk/printk.c:1682 do_syslog kernel/printk/printk.c:1772 [inline] __do_sys_syslog kernel/printk/printk.c:1774 [inline] __se_sys_syslog kernel/printk/printk.c:1772 [inline] __x64_sys_syslog+0x97/0xc0 kernel/printk/printk.c:1772 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 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+0x537/0xb80 mm/page_alloc.c:1421 free_unref_page_prepare mm/page_alloc.c:3343 [inline] free_unref_page+0x19/0x5a0 mm/page_alloc.c:3438 device_release+0x9f/0x240 drivers/base/core.c:2241 kobject_cleanup lib/kobject.c:673 [inline] kobject_release lib/kobject.c:704 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:721 put_device+0x1b/0x30 drivers/base/core.c:3535 ath9k_htc_probe_device+0x1c7/0x1f00 drivers/net/wireless/ath/ath9k/htc_drv_init.c:976 ath9k_htc_hw_init+0x31/0x60 drivers/net/wireless/ath/ath9k/htc_hst.c:508 ath9k_hif_usb_firmware_cb+0x274/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1245 request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1107 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Memory state around the buggy address: ffff88810edec180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88810edec200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88810edec280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88810edec300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88810edec380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ---------------- Code disassembly (best guess): 0: 3e 47 bb 05 00 00 00 ds rex.RXB mov $0x5,%r11d 7: 00 e8 add %ch,%al 9: f9 stc a: 77 01 ja 0xd c: 00 e8 add %ch,%al e: 04 6a add $0x6a,%al 10: 56 push %rsi 11: fb sti 12: 48 89 d8 mov %rbx,%rax 15: 48 c1 e8 03 shr $0x3,%rax 19: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) 1d: 74 08 je 0x27 1f: 48 89 df mov %rbx,%rdi 22: e8 5f 5f 8b fb callq 0xfb8b5f86 27: 48 8b 03 mov (%rbx),%rax * 2a: 48 8d bb 80 00 00 00 lea 0x80(%rbx),%rdi <-- trapping instruction 31: 48 89 04 24 mov %rax,(%rsp) 35: 48 89 f8 mov %rdi,%rax 38: 48 c1 e8 03 shr $0x3,%rax 3c: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1)