RAX: 1ffff11023686e00 RBX: 0000000113c82067 RCX: ffff888122868000 RDX: 0000000000000000 RSI: 0000000020016000 RDI: ffff8881057ccde0 ================================================================== BUG: KASAN: out-of-bounds in __show_regs+0x151/0x540 arch/x86/kernel/process_64.c:85 Read of size 8 at addr ffffc90001327998 by task kworker/u4:0/7 CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.10.227-syzkaller-00554-g550d1177dc67 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_unbound linkwatch_event Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118 print_address_description+0x81/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:435 [inline] kasan_report+0x179/0x1c0 mm/kasan/report.c:452 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309 __show_regs+0x151/0x540 arch/x86/kernel/process_64.c:85 show_regs_if_on_stack+0xd9/0xe0 arch/x86/kernel/dumpstack.c:173 show_trace_log_lvl+0x2a7/0x380 arch/x86/kernel/dumpstack.c:301 show_stack+0x37/0x40 arch/x86/kernel/dumpstack.c:321 sched_show_task+0x35b/0x540 kernel/sched/core.c:6747 show_state_filter+0x17e/0x1e0 kernel/sched/core.c:6790 show_state include/linux/sched/debug.h:21 [inline] fn_show_state+0x10/0x20 drivers/tty/vt/keyboard.c:588 k_spec+0xff/0x130 drivers/tty/vt/keyboard.c:641 kbd_keycode drivers/tty/vt/keyboard.c:1489 [inline] kbd_event+0x250d/0x3780 drivers/tty/vt/keyboard.c:1507 input_to_handler drivers/input/input.c:129 [inline] input_pass_values+0x8c5/0x1040 drivers/input/input.c:156 input_handle_event+0xcb6/0x1500 drivers/input/input.c:421 input_event+0xa5/0xd0 drivers/input/input.c:452 hidinput_hid_event+0xe92/0x15c0 drivers/hid/hid-input.c:1423 hid_process_event+0x461/0x5c0 drivers/hid/hid-core.c:1532 hid_input_field drivers/hid/hid-core.c:1584 [inline] hid_report_raw_event+0xe19/0x1560 drivers/hid/hid-core.c:1800 hid_input_report+0x41a/0x4d0 drivers/hid/hid-core.c:1867 hid_irq_in+0x4a4/0x700 drivers/hid/usbhid/hid-core.c:284 __usb_hcd_giveback_urb+0x337/0x4f0 drivers/usb/core/hcd.c:1674 usb_hcd_giveback_urb+0x12b/0x400 drivers/usb/core/hcd.c:1748 dummy_timer+0x86b/0x2f70 drivers/usb/gadget/udc/dummy_hcd.c:1974 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1450 expire_timers kernel/time/timer.c:1495 [inline] __run_timers+0x72a/0xa10 kernel/time/timer.c:1789 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1802 __do_softirq+0x268/0x5bb kernel/softirq.c:309 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:405 [inline] __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline] RIP: 0010:console_unlock+0xe13/0x1390 kernel/printk/printk.c:2561 Code: 85 db 4c 8d b4 24 d0 01 00 00 48 8b 5c 24 68 0f 85 37 05 00 00 e8 ad 65 00 00 48 89 9c 24 b0 00 00 00 ff b4 24 b0 00 00 00 9d <48> 8b 44 24 30 42 80 3c 38 00 74 08 4c 89 f7 e8 39 2c 56 00 48 c7 RSP: 0018:ffffc90000077520 EFLAGS: 00000246 RAX: ffffffff81529279 RBX: 0000000000000246 RCX: ffff88810024bb40 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc90000077830 R08: ffffffff81522c92 R09: 0000000000000003 R10: fffff5200000ee94 R11: dffffc0000000001 R12: ffffffff866c4a30 R13: ffffc90000077790 R14: ffffc900000776f0 R15: dffffc0000000000 vprintk_emit+0x1c0/0x380 kernel/printk/printk.c:2069 vprintk_default+0x26/0x30 kernel/printk/printk.c:2086 vprintk_func+0x19d/0x1e0 kernel/printk/printk_safe.c:401 printk+0xd1/0x111 kernel/printk/printk.c:2117 addrconf_notify+0xbe9/0xe90 net/ipv6/addrconf.c:3647 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0x8c/0xf0 kernel/notifier.c:410 call_netdevice_notifiers_info net/core/dev.c:2054 [inline] netdev_state_change+0x1a3/0x250 net/core/dev.c:1484 linkwatch_do_dev+0x100/0x140 net/core/link_watch.c:167 __linkwatch_run_queue+0x4ca/0x7f0 net/core/link_watch.c:213 linkwatch_event+0x4c/0x60 net/core/link_watch.c:252 process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2301 worker_thread+0xaea/0x1510 kernel/workqueue.c:2447 kthread+0x34b/0x3d0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Memory state around the buggy address: ffffc90001327880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90001327900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffc90001327980: f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00 00 00 00 00 ^ ffffc90001327a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90001327a80: 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00 ================================================================== RBP: 0000000000000246 R08: 950a3f4b29591500 R09: ffffed102450d001 R10: ffffffff819e6c20 R11: ffffffff85d12083 R12: ffffffff819ce9f0 R13: ffffffff85d11c40 R14: 0000000041b58ab3 R15: 0000000000000176 task:syz.6.1723 state:R running task stack: 0 pid: 7452 ppid: 4331 flags:0x00004000 Call Trace: __switch_to_asm+0x60/0x60 RIP: 0033:0x7f610b80e729 RSP: 002b:00007f6109e0f1c0 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3 RAX: 0000000000000000 RBX: 00007f610b790b60 RCX: 00007f610b80e729 RDX: 00007f610b790b60 RSI: 0000000000000058 RDI: 00007ffc597e2e90 RBP: 00007f6109e0f6c0 R08: 00007f6109e0f6c0 R09: 00007ffc597e2f77 R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffa8 R13: 000000000000006e R14: 00007ffc597e2e90 R15: 00007ffc597e2f78 ---------------- Code disassembly (best guess): 0: 85 db test %ebx,%ebx 2: 4c 8d b4 24 d0 01 00 lea 0x1d0(%rsp),%r14 9: 00 a: 48 8b 5c 24 68 mov 0x68(%rsp),%rbx f: 0f 85 37 05 00 00 jne 0x54c 15: e8 ad 65 00 00 call 0x65c7 1a: 48 89 9c 24 b0 00 00 mov %rbx,0xb0(%rsp) 21: 00 22: ff b4 24 b0 00 00 00 push 0xb0(%rsp) 29: 9d popf * 2a: 48 8b 44 24 30 mov 0x30(%rsp),%rax <-- trapping instruction 2f: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 34: 74 08 je 0x3e 36: 4c 89 f7 mov %r14,%rdi 39: e8 39 2c 56 00 call 0x562c77 3e: 48 rex.W 3f: c7 .byte 0xc7