Oops: general protection fault, probably for non-canonical address 0xdffffc0000000024: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000120-0x0000000000000127]
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.13.0-rc6-syzkaller-00006-g5428dc1906dd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:tty_insert_flip_char include/linux/tty_flip.h:67 [inline]
RIP: 0010:qt2_process_read_urb drivers/usb/serial/quatech2.c:538 [inline]
RIP: 0010:qt2_read_bulk_callback+0x3b2/0x1160 drivers/usb/serial/quatech2.c:574
Code: 00 00 42 0f b6 04 28 84 c0 0f 85 e0 08 00 00 c6 84 24 d0 00 00 00 00 48 8b 44 24 08 48 8d 98 20 01 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 0f 1b 81 fa 4c 8b 3b 4d 8d 67 08
RSP: 0018:ffffc90000a18720 EFLAGS: 00010006
RAX: 0000000000000024 RBX: 0000000000000120 RCX: ffffc90000a18700
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 000000000000001b
RBP: ffffc90000a18870 R08: ffffffff8784cba6 R09: 1ffffffff203303e
R10: dffffc0000000000 R11: fffffbfff203303f R12: ffff88802fec6c13
R13: dffffc0000000000 R14: 00000000000000a5 R15: ffff88802fec6000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055efe4772a50 CR3: 000000007848c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__usb_hcd_giveback_urb+0x42c/0x6e0 drivers/usb/core/hcd.c:1650
dummy_timer+0x856/0x4620 drivers/usb/gadget/udc/dummy_hcd.c:1993
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1803
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1820
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d6 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d c5 81 a0 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffc900001a7d08 EFLAGS: 00000246
RAX: ffff88801d2f0000 RBX: ffff8880212d9064 RCX: 000000000002ac29
RDX: 0000000000000001 RSI: ffff8880212d9000 RDI: ffff8880212d9064
RBP: 000000000003a9f8 R08: ffff8880b8737cdb R09: 1ffff110170e6f9b
R10: dffffc0000000000 R11: ffffffff8bc8fcd0 R12: ffff88801e786800
R13: 0000000000000001 R14: 0000000000000001 R15: ffffffff8f121820
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:699
cpuidle_enter_state+0x109/0x470 drivers/cpuidle/cpuidle.c:268
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:389
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:230 [inline]
do_idle+0x372/0x5c0 kernel/sched/idle.c:325
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
start_secondary+0x102/0x110 arch/x86/kernel/smpboot.c:314
common_startup_64+0x13e/0x147
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:tty_insert_flip_char include/linux/tty_flip.h:67 [inline]
RIP: 0010:qt2_process_read_urb drivers/usb/serial/quatech2.c:538 [inline]
RIP: 0010:qt2_read_bulk_callback+0x3b2/0x1160 drivers/usb/serial/quatech2.c:574
Code: 00 00 42 0f b6 04 28 84 c0 0f 85 e0 08 00 00 c6 84 24 d0 00 00 00 00 48 8b 44 24 08 48 8d 98 20 01 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 0f 1b 81 fa 4c 8b 3b 4d 8d 67 08
RSP: 0018:ffffc90000a18720 EFLAGS: 00010006
RAX: 0000000000000024 RBX: 0000000000000120 RCX: ffffc90000a18700
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 000000000000001b
RBP: ffffc90000a18870 R08: ffffffff8784cba6 R09: 1ffffffff203303e
R10: dffffc0000000000 R11: fffffbfff203303f R12: ffff88802fec6c13
R13: dffffc0000000000 R14: 00000000000000a5 R15: ffff88802fec6000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055efe4772a50 CR3: 000000007848c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
7: 84 c0 test %al,%al
9: 0f 85 e0 08 00 00 jne 0x8ef
f: c6 84 24 d0 00 00 00 movb $0x0,0xd0(%rsp)
16: 00
17: 48 8b 44 24 08 mov 0x8(%rsp),%rax
1c: 48 8d 98 20 01 00 00 lea 0x120(%rax),%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 0f 1b 81 fa call 0xfa811b48
39: 4c 8b 3b mov (%rbx),%r15
3c: 4d 8d 67 08 lea 0x8(%r15),%r12