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Message-ID: <6847e45f.a70a0220.27c366.005b.GAE@google.com> Date: Tue, 10 Jun 2025 00:53:03 -0700 From: syzbot <syzbot+0d8afba53e8fb2633217@...kaller.appspotmail.com> To: dmantipov@...dex.ru, linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: Re: [syzbot] [wireless?] general protection fault in carl9170_usb_rx_complete Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in carl9170_usb_rx_complete ------------[ cut here ]------------ WARNING: CPU: 0 PID: 10 at drivers/net/wireless/ath/carl9170/usb.c:448 carl9170_usb_rx_complete+0x2e4/0x310 drivers/net/wireless/ath/carl9170/usb.c:448 Modules linked in: CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.16.0-rc1-syzkaller-dirty #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: usb_hub_wq hub_event RIP: 0010:carl9170_usb_rx_complete+0x2e4/0x310 drivers/net/wireless/ath/carl9170/usb.c:448 Code: 86 17 03 e9 88 fe ff ff e8 79 79 9b fd 4c 89 f7 e8 e1 5a 60 fd e9 14 ff ff ff e8 d7 6e f8 fd e9 b1 fd ff ff e8 5d 79 9b fd 90 <0f> 0b 90 e9 5e fe ff ff e8 ef 6e f8 fd e9 44 fd ff ff 48 89 34 24 RSP: 0018:ffffc90000007b28 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff8881285bb080 RCX: ffffffff83e24372 RDX: ffff8881016f1d00 RSI: ffffffff83e243d3 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8881285bba20 R13: ffff8881285bba48 R14: ffff8881285bba18 R15: 0100000000000004 FS: 0000000000000000(0000) GS:ffff88826917f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff0e3e5e00 CR3: 00000001370c0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> __usb_hcd_giveback_urb+0x38a/0x6e0 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x39b/0x450 drivers/usb/core/hcd.c:1734 dummy_timer+0x180e/0x3a20 drivers/usb/gadget/udc/dummy_hcd.c:1995 __run_hrtimer kernel/time/hrtimer.c:1761 [inline] __hrtimer_run_queues+0x202/0xad0 kernel/time/hrtimer.c:1825 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1842 handle_softirqs+0x205/0x8d0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xfa/0x160 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1050 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 66 c1 2b fa 48 89 df e8 4e 15 2c fa f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 15 88 1f fa 65 8b 05 7e 6d 3b 05 85 c0 74 16 5b RSP: 0018:ffffc900000af578 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffffffff938a36a8 RCX: 0000000000000007 RDX: 0000000000000000 RSI: ffffffff88af5ee8 RDI: ffffffff8768a280 RBP: 0000000000000206 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff8a7a0ed7 R11: 0000000000000001 R12: 1ffff92000015eb6 R13: ffffc900000af6d8 R14: 0000000000000000 R15: ffffffff938a36a8 __debug_object_init+0x2de/0x3d0 lib/debugobjects.c:755 timer_init_key_on_stack+0x2e/0x120 kernel/time/timer.c:816 schedule_timeout+0x111/0x290 kernel/time/sleep_timeout.c:96 schedule_timeout_uninterruptible kernel/time/sleep_timeout.c:158 [inline] msleep+0xa6/0xf0 kernel/time/sleep_timeout.c:318 hub_port_reset+0x498/0x1e00 drivers/usb/core/hub.c:3133 hub_port_init+0x1f9/0x3b50 drivers/usb/core/hub.c:4907 hub_port_connect drivers/usb/core/hub.c:5464 [inline] hub_port_connect_change drivers/usb/core/hub.c:5675 [inline] port_event drivers/usb/core/hub.c:5835 [inline] hub_event+0x2d43/0x5030 drivers/usb/core/hub.c:5917 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402 kthread+0x3c5/0x780 kernel/kthread.c:464 ret_from_fork+0x5b3/0x6c0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK> ---------------- Code disassembly (best guess): 0: f5 cmc 1: 53 push %rbx 2: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 7: 48 89 fb mov %rdi,%rbx a: 48 83 c7 18 add $0x18,%rdi e: e8 66 c1 2b fa call 0xfa2bc179 13: 48 89 df mov %rbx,%rdi 16: e8 4e 15 2c fa call 0xfa2c1569 1b: f7 c5 00 02 00 00 test $0x200,%ebp 21: 75 23 jne 0x46 23: 9c pushf 24: 58 pop %rax 25: f6 c4 02 test $0x2,%ah 28: 75 37 jne 0x61 * 2a: bf 01 00 00 00 mov $0x1,%edi <-- trapping instruction 2f: e8 15 88 1f fa call 0xfa1f8849 34: 65 8b 05 7e 6d 3b 05 mov %gs:0x53b6d7e(%rip),%eax # 0x53b6db9 3b: 85 c0 test %eax,%eax 3d: 74 16 je 0x55 3f: 5b pop %rbx Tested on: commit: 19272b37 Linux 6.16-rc1 git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=12dcaa82580000 kernel config: https://syzkaller.appspot.com/x/.config?x=4d9d9f47f21a57a6 dashboard link: https://syzkaller.appspot.com/bug?extid=0d8afba53e8fb2633217 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=106ac60c580000
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