general protection fault in dummy_set_selfpowered

Status: premoderation: reported C repro on 2026/07/24 15:05
Reported-by: syzbot+7e0361fe56dc383a3277@syzkaller.appspotmail.com
First crash: 10d, last: 1d00h
▶ ▼ Similar bugs (7)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream general protection fault in dummy_set_selfpowered usb prio:low 10 syz, C error 490 9m 6d07h 0/29 upstream: reported C repro on 2026/07/28 13:53
android-5-15 general protection fault in dummy_set_selfpowered origin:upstream 2 syz, C 28 2d15h 9d20h 0/2 upstream: reported C repro on 2026/07/25 00:06
linux-5.15 general protection fault in dummy_set_selfpowered 2 6 5d13h 9d23h 0/3 upstream: reported on 2026/07/24 22:03
android-6-1 general protection fault in dummy_set_selfpowered 2 syz, C 19 17h36m 8d07h 0/2 upstream: reported C repro on 2026/07/26 13:33
linux-6.6 general protection fault in dummy_set_selfpowered 2 17 5h49m 9d19h 0/2 upstream: reported on 2026/07/25 01:11
android-5-10 general protection fault in dummy_set_selfpowered 2 syz, C 39 4h38m 10d 0/2 upstream: reported C repro on 2026/07/24 18:49
linux-6.1 BUG: unable to handle kernel paging request in dummy_set_selfpowered 8 15 17h03m 9d22h 0/3 upstream: reported on 2026/07/24 22:26

Sample crash report:
usb usb1: USB disconnect, device number 1
dummy_hcd dummy_hcd.0: stopped
dummy_hcd dummy_hcd.0: USB bus 1 deregistered
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 313 Comm: syz-executor321 Not tainted syzkaller #0 200dea8a17c83f35b0a1e1238c384757fc17b797
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:dummy_set_selfpowered+0xc0/0x160 drivers/usb/gadget/udc/dummy_hcd.c:887
Code: 94 c0 4d 8d b4 c6 d0 04 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 0a cd 26 fe 4d 8b 3e 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 f1 cc 26 fe 41 be 58 11 00 00 4d
RSP: 0018:ffffc9000124f738 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff888120228000 RSI: 0000000000000003 RDI: 0000000000000005
RBP: ffffc9000124f758 R08: ffff888101651867 R09: 1ffff110202ca30c
R10: 0000000000000000 R11: ffffffff83b966f0 R12: dffffc0000000000
R13: ffff88810de524f0 R14: ffff888104fad160 R15: 0000000000000000
FS:  0000555589a413c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d25faca410 CR3: 0000000131ed0000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 usb_gadget_set_selfpowered+0x84/0x1a0 drivers/usb/gadget/udc/core.c:578
 composite_dev_prepare+0x2f8/0x3e0 drivers/usb/gadget/composite.c:2491
 configfs_composite_bind+0xa8/0x15f0 drivers/usb/gadget/configfs.c:1707
 gadget_bind_driver+0x304/0x9c0 drivers/usb/gadget/udc/core.c:1641
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x2e1/0x8b0 drivers/base/dd.c:657
 __driver_probe_device+0x193/0x280 drivers/base/dd.c:799
 driver_probe_device+0x54/0x3f0 drivers/base/dd.c:829
 __driver_attach+0x422/0x5e0 drivers/base/dd.c:1215
 bus_for_each_dev+0x249/0x2d0 drivers/base/bus.c:370
 driver_attach+0x46/0x50 drivers/base/dd.c:1233
 bus_add_driver+0x393/0x730 drivers/base/bus.c:675
 driver_register+0x2b7/0x3c0 drivers/base/driver.c:246
 usb_gadget_register_driver_owner+0xfc/0x270 drivers/usb/gadget/udc/core.c:1731
 gadget_dev_desc_UDC_store+0x224/0x350 drivers/usb/gadget/configfs.c:305
 flush_write_buffer fs/configfs/file.c:207 [inline]
 configfs_write_iter+0x32f/0x490 fs/configfs/file.c:229
 new_sync_write fs/read_write.c:591 [inline]
 vfs_write+0x762/0xfd0 fs/read_write.c:684
 ksys_write+0x145/0x260 fs/read_write.c:737
 __do_sys_write fs/read_write.c:749 [inline]
 __se_sys_write fs/read_write.c:746 [inline]
 __x64_sys_write+0x7f/0x90 fs/read_write.c:746
 x64_sys_call+0x271c/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:2
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f1e93f03d79
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 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 d8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe0204efb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f1e93f03d79
RDX: 000000000000000c RSI: 0000200000000600 RDI: 0000000000000004
RBP: 6769666e6f632f2e R08: 00007ffe0204f0f8 R09: 00007ffe0204f0f8
R10: 00007ffe0204f0f8 R11: 0000000000000246 R12: 00007ffe0204f0e8
R13: 0000000000000002 R14: 0000200000000008 R15: 0000000000000002
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dummy_set_selfpowered+0xc0/0x160 drivers/usb/gadget/udc/dummy_hcd.c:887
Code: 94 c0 4d 8d b4 c6 d0 04 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 0a cd 26 fe 4d 8b 3e 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 f1 cc 26 fe 41 be 58 11 00 00 4d
RSP: 0018:ffffc9000124f738 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff888120228000 RSI: 0000000000000003 RDI: 0000000000000005
RBP: ffffc9000124f758 R08: ffff888101651867 R09: 1ffff110202ca30c
R10: 0000000000000000 R11: ffffffff83b966f0 R12: dffffc0000000000
R13: ffff88810de524f0 R14: ffff888104fad160 R15: 0000000000000000
FS:  0000555589a413c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d25faca410 CR3: 0000000131ed0000 CR4: 00000000003526b0
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	4d 8d b4 c6 d0 04 00 	lea    0x4d0(%r14,%rax,8),%r14
   7:	00
   8:	4c 89 f0             	mov    %r14,%rax
   b:	48 c1 e8 03          	shr    $0x3,%rax
   f:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  14:	74 08                	je     0x1e
  16:	4c 89 f7             	mov    %r14,%rdi
  19:	e8 0a cd 26 fe       	call   0xfe26cd28
  1e:	4d 8b 3e             	mov    (%r14),%r15
  21:	4c 89 f8             	mov    %r15,%rax
  24:	48 c1 e8 03          	shr    $0x3,%rax
* 28:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2d:	74 08                	je     0x37
  2f:	4c 89 ff             	mov    %r15,%rdi
  32:	e8 f1 cc 26 fe       	call   0xfe26cd28
  37:	41 be 58 11 00 00    	mov    $0x1158,%r14d
  3d:	4d                   	rex.WRB

Crashes (43):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/31 18:22 android16-6.12 1a138e24e292 7664cf44 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/31 11:21 android16-6.12 7d66c8550304 aaffb173 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/30 10:48 android16-6.12 f1c9c21d1c2f 2377cd3d .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/30 00:12 android16-6.12 f1c9c21d1c2f 6ef5c1e2 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/29 04:44 android16-6.12 6f69867ef141 19622d9d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/28 00:24 android16-6.12 a12ab5a23a35 aae9036b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/27 23:54 android16-6.12 a12ab5a23a35 aae9036b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/27 01:07 android16-6.12 579215f16d4e 492bab15 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/27 00:36 android16-6.12 579215f16d4e 492bab15 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/24 17:03 android16-6.12 41c3d4eb44a7 dd737a83 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/08/02 21:02 android16-6.12 1a138e24e292 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/08/02 17:28 android16-6.12 1a138e24e292 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/08/02 10:33 android16-6.12 1a138e24e292 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/08/02 09:20 android16-6.12 1a138e24e292 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/31 19:48 android16-6.12 1a138e24e292 7664cf44 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/30 14:40 android16-6.12 f1c9c21d1c2f 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/30 10:48 android16-6.12 f1c9c21d1c2f 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/30 10:47 android16-6.12 f1c9c21d1c2f 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/30 10:46 android16-6.12 f1c9c21d1c2f 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/30 10:45 android16-6.12 f1c9c21d1c2f 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/30 10:18 android16-6.12 f1c9c21d1c2f 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/30 10:13 android16-6.12 f1c9c21d1c2f 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/30 08:17 android16-6.12 f1c9c21d1c2f 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/30 00:38 android16-6.12 f1c9c21d1c2f 6ef5c1e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/29 11:39 android16-6.12 6f69867ef141 19622d9d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/29 00:29 android16-6.12 c56681255a47 edc8a875 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/28 23:53 android16-6.12 c56681255a47 edc8a875 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/28 18:45 android16-6.12 c56681255a47 edc8a875 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/28 03:27 android16-6.12 7b9e76cc9df5 45ae1df4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/28 00:24 android16-6.12 a12ab5a23a35 aae9036b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/27 22:18 android16-6.12 a12ab5a23a35 aae9036b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/27 04:27 android16-6.12 579215f16d4e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/26 22:56 android16-6.12 579215f16d4e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/26 22:18 android16-6.12 579215f16d4e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/26 21:32 android16-6.12 579215f16d4e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/26 21:32 android16-6.12 579215f16d4e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/26 15:36 android16-6.12 579215f16d4e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/26 06:35 android16-6.12 579215f16d4e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/26 05:44 android16-6.12 579215f16d4e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/25 10:34 android16-6.12 579215f16d4e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/25 00:31 android16-6.12 41c3d4eb44a7 dd737a83 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/24 15:04 android16-6.12 41c3d4eb44a7 dd737a83 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
2026/07/24 15:04 android16-6.12 41c3d4eb44a7 dd737a83 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in dummy_set_selfpowered
* Struck through repros no longer work on HEAD.