kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 311 Comm: syz-executor809 Not tainted 5.4.197-syzkaller-00010-gccdf6bdf62a8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 RIP: 0010:mon_bin_flush+0x140/0x260 drivers/usb/mon/mon_bin.c:885 Code: e8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 ef e8 36 14 d0 fe 48 8b 45 00 81 e3 ff 0f 00 00 4c 8d 74 03 24 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 28 84 c0 75 78 41 8b 36 83 c6 40 4c 89 e7 e8 b9 fd ff RSP: 0018:ffff8881ddd27d10 EFLAGS: 00010007 RAX: 000000000000013c RBX: 00000000000009c0 RCX: 0000000000f0bab0 RDX: ffff8881ddd1af40 RSI: 000000000f40e900 RDI: 0000000000000000 RBP: ffff8881df229ab8 R08: ffffffff82bca912 R09: ffffed103bba4f9b R10: ffffed103bba4f9b R11: 1ffff1103bba4f9a R12: ffff8881e376a800 R13: dffffc0000000000 R14: 00000000000009e4 R15: ffff8881e376a818 FS: 00007f0fa8b35700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002000 CR3: 00000001de25f000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mon_bin_ioctl+0x259/0xd00 drivers/usb/mon/mon_bin.c:1060 do_vfs_ioctl+0x6d1/0x15b0 fs/ioctl.c:47 ksys_ioctl fs/ioctl.c:742 [inline] __do_sys_ioctl fs/ioctl.c:749 [inline] __se_sys_ioctl fs/ioctl.c:747 [inline] __x64_sys_ioctl+0xd4/0x110 fs/ioctl.c:747 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f0fa8b908b9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0fa8b352f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0fa8c0e480 RCX: 00007f0fa8b908b9 RDX: 0000000000000006 RSI: 0000000000009208 RDI: 0000000000000003 RBP: 00007f0fa8bdb2a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0fa8bda2d8 R13: 6273752f7665642f R14: 0000000100000000 R15: 00007f0fa8c0e488 Modules linked in: ---[ end trace eff845207a4ffd48 ]--- RIP: 0010:mon_bin_flush+0x140/0x260 drivers/usb/mon/mon_bin.c:885 Code: e8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 ef e8 36 14 d0 fe 48 8b 45 00 81 e3 ff 0f 00 00 4c 8d 74 03 24 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 28 84 c0 75 78 41 8b 36 83 c6 40 4c 89 e7 e8 b9 fd ff RSP: 0018:ffff8881ddd27d10 EFLAGS: 00010007 RAX: 000000000000013c RBX: 00000000000009c0 RCX: 0000000000f0bab0 RDX: ffff8881ddd1af40 RSI: 000000000f40e900 RDI: 0000000000000000 RBP: ffff8881df229ab8 R08: ffffffff82bca912 R09: ffffed103bba4f9b R10: ffffed103bba4f9b R11: 1ffff1103bba4f9a R12: ffff8881e376a800 R13: dffffc0000000000 R14: 00000000000009e4 R15: ffff8881e376a818 FS: 00007f0fa8b35700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002000 CR3: 00000001de25f000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 48 c1 e8 03 callq 0x3e8c14d 5: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) a: 74 08 je 0x14 c: 48 89 ef mov %rbp,%rdi f: e8 36 14 d0 fe callq 0xfed0144a 14: 48 8b 45 00 mov 0x0(%rbp),%rax 18: 81 e3 ff 0f 00 00 and $0xfff,%ebx 1e: 4c 8d 74 03 24 lea 0x24(%rbx,%rax,1),%r14 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 75 78 jne 0xab 33: 41 8b 36 mov (%r14),%esi 36: 83 c6 40 add $0x40,%esi 39: 4c 89 e7 mov %r12,%rdi 3c: e8 .byte 0xe8 3d: b9 .byte 0xb9 3e: fd std 3f: ff .byte 0xff