R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 kobject: kobject_add_internal failed for raw_gadget with -EEXIST, don't try to register things with the same name in the same directory. Oops: general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] CPU: 0 UID: 0 PID: 6242 Comm: syz.0.72 Not tainted 6.15.0-rc5-syzkaller-00022-g01f95500a162 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:kasan_byte_accessible+0x15/0x30 mm/kasan/generic.c:199 Code: 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ef 03 48 01 c7 <0f> b6 07 3c 07 0f 96 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 RSP: 0018:ffffc9000766fbc0 EFLAGS: 00010082 RAX: dffffc0000000000 RBX: 0000000000000020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8b6be8fa RDI: dffffc0000000004 RBP: 0000000000000020 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff90852317 R11: 0000000000000000 R12: ffffffff8b6be8fa R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880977ec000(0063) knlGS:00000000f5026b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f5004510 CR3: 000000006a6ae000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __kasan_check_byte+0x13/0x50 mm/kasan/common.c:556 kasan_check_byte include/linux/kasan.h:399 [inline] lock_acquire kernel/locking/lockdep.c:5840 [inline] lock_acquire+0xfc/0x350 kernel/locking/lockdep.c:5823 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 complete_with_flags kernel/sched/completion.c:20 [inline] complete+0x1d/0x200 kernel/sched/completion.c:47 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1e4/0x5a0 lib/kobject.c:737 lookup_or_create_module_kobject.part.0+0x11d/0x170 kernel/params.c:783 lookup_or_create_module_kobject+0x41/0x60 kernel/params.c:793 module_add_driver+0x23a/0x420 drivers/base/module.c:46 bus_add_driver+0x32e/0x690 drivers/base/bus.c:682 driver_register+0x15c/0x4b0 drivers/base/driver.c:249 usb_gadget_register_driver_owner+0x132/0x330 drivers/usb/gadget/udc/core.c:1700 raw_ioctl_run drivers/usb/gadget/legacy/raw_gadget.c:595 [inline] raw_ioctl+0x17d0/0x2c30 drivers/usb/gadget/legacy/raw_gadget.c:1306 __do_compat_sys_ioctl fs/ioctl.c:1004 [inline] __se_compat_sys_ioctl fs/ioctl.c:947 [inline] __ia32_compat_sys_ioctl+0x24c/0x360 fs/ioctl.c:947 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7f08579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f5024484 EFLAGS: 00000292 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 0000000000005501 RDX: 0000000000000000 RSI: 00000000f7392ff4 RDI: 00000000f50244e8 RBP: 00000000f7392ff4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:kasan_byte_accessible+0x15/0x30 mm/kasan/generic.c:199 Code: 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ef 03 48 01 c7 <0f> b6 07 3c 07 0f 96 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 RSP: 0018:ffffc9000766fbc0 EFLAGS: 00010082 RAX: dffffc0000000000 RBX: 0000000000000020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8b6be8fa RDI: dffffc0000000004 RBP: 0000000000000020 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff90852317 R11: 0000000000000000 R12: ffffffff8b6be8fa R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880977ec000(0063) knlGS:00000000f5026b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f5004510 CR3: 000000006a6ae000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 0f 1f 00 nopl (%rax) 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 66 0f 1f 00 nopw (%rax) 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 c1 ef 03 shr $0x3,%rdi 27: 48 01 c7 add %rax,%rdi * 2a: 0f b6 07 movzbl (%rdi),%eax <-- trapping instruction 2d: 3c 07 cmp $0x7,%al 2f: 0f 96 c0 setbe %al 32: c3 ret 33: cc int3 34: cc int3 35: cc int3 36: cc int3 37: 66 data16 38: 66 data16 39: 2e cs 3a: 0f .byte 0xf 3b: 1f (bad) 3c: 84 00 test %al,(%rax)