Hello, syzbot found the following issue on: HEAD commit: 37fdb7c9 Merge tag 'v5.13-rc6' into usb-next git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing console output: https://syzkaller.appspot.com/x/log.txt?x=1702bbebd00000 kernel config: https://syzkaller.appspot.com/x/.config?x=e3b6ba4f6e6c6ddf dashboard link: https://syzkaller.appspot.com/bug?extid=90d241d7661ca2493f0b syz repro: https://syzkaller.appspot.com/x/repro.syz?x=113b98b8300000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=134650f7d00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+90d241d7661ca2493f0b@xxxxxxxxxxxxxxxxxxxxxxxxx divide error: 0000 [#1] SMP KASAN CPU: 1 PID: 32 Comm: kworker/1:1 Not tainted 5.13.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events request_firmware_work_func RIP: 0010:ath9k_htc_choose_bslot drivers/net/wireless/ath/ath9k/htc_drv_beacon.c:277 [inline] RIP: 0010:ath9k_htc_swba+0x1b2/0xc70 drivers/net/wireless/ath/ath9k/htc_drv_beacon.c:310 Code: c0 40 84 c6 0f 85 db 09 00 00 48 8b 55 00 0f b7 c9 bd 01 00 00 00 48 0f ca 48 89 d0 c1 ea 0a 48 c1 e8 20 c1 e0 16 09 d0 31 d2 <f7> f1 8d 04 12 31 d2 f7 f1 29 c5 48 8d 83 b0 03 00 00 48 89 c7 48 RSP: 0018:ffffc90000148dc8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88811a0d31e0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff8304a44a R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88810efedc0c R15: ffff88811a63c1f0 FS: 0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001038 CR3: 00000001081c0000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> ath9k_wmi_event_tasklet+0x2e7/0x3f0 drivers/net/wireless/ath/ath9k/wmi.c:165 tasklet_action_common.constprop.0+0x201/0x2e0 kernel/softirq.c:784 __do_softirq+0x1b0/0x944 kernel/softirq.c:559 invoke_softirq kernel/softirq.c:433 [inline] __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0x119/0x1a0 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x6a/0x90 arch/x86/kernel/apic/apic.c:1100 </IRQ> asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:197 Code: 89 03 e9 04 fd ff ff b9 ff ff ff ff ba 08 00 00 00 4d 8b 03 48 0f bd ca 49 8b 45 00 48 63 c9 e9 64 ff ff ff 66 0f 1f 44 00 00 <65> 8b 05 b9 d5 c0 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc90000197540 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888107ff0000 RSI: ffffffff812a3455 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8a8f0727 R10: ffffffff812a344b R11: 0000000000000000 R12: ffffffff82d1e760 R13: 0000000000000200 R14: dffffc0000000000 R15: ffffc900001975a0 console_unlock+0x7cb/0xc20 kernel/printk/printk.c:2653 vprintk_emit+0x20a/0x580 kernel/printk/printk.c:2174 dev_vprintk_emit+0x36e/0x3b2 drivers/base/core.c:4553 dev_printk_emit+0xba/0xf1 drivers/base/core.c:4564 __dev_printk+0xcf/0xf5 drivers/base/core.c:4576 _dev_err+0xd7/0x109 drivers/base/core.c:4619 ath9k_init_htc_services.constprop.0.cold+0x32/0x11a drivers/net/wireless/ath/ath9k/htc_drv_init.c:220 ath9k_htc_probe_device+0x25f/0x1e50 drivers/net/wireless/ath/ath9k/htc_drv_init.c:960 ath9k_htc_hw_init+0x31/0x60 drivers/net/wireless/ath/ath9k/htc_hst.c:503 ath9k_hif_usb_firmware_cb+0x274/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1239 request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1081 process_one_work+0x98d/0x1580 kernel/workqueue.c:2276 worker_thread+0x64c/0x1120 kernel/workqueue.c:2422 kthread+0x38c/0x460 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Modules linked in: ---[ end trace 3235ce4c0fe1a3c7 ]--- RIP: 0010:ath9k_htc_choose_bslot drivers/net/wireless/ath/ath9k/htc_drv_beacon.c:277 [inline] RIP: 0010:ath9k_htc_swba+0x1b2/0xc70 drivers/net/wireless/ath/ath9k/htc_drv_beacon.c:310 Code: c0 40 84 c6 0f 85 db 09 00 00 48 8b 55 00 0f b7 c9 bd 01 00 00 00 48 0f ca 48 89 d0 c1 ea 0a 48 c1 e8 20 c1 e0 16 09 d0 31 d2 <f7> f1 8d 04 12 31 d2 f7 f1 29 c5 48 8d 83 b0 03 00 00 48 89 c7 48 RSP: 0018:ffffc90000148dc8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88811a0d31e0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff8304a44a R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88810efedc0c R15: ffff88811a63c1f0 FS: 0000000000000000(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001038 CR3: 00000001081c0000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
