general protection fault in rebind_store

Status: upstream: reported C repro on 2026/08/01 00:36
Subsystems: usb
Labels: prio:low
[Documentation on labels]
Reported-by: syzbot+af76b01c9a0f0ab60fb0@syzkaller.appspotmail.com
First crash: 51d, last: 5d17h
▶ ▼ ✨ AI Jobs (1)
ID Workflow Result Correct Bug Created Started Finished Revision
d82b7d3e assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ general protection fault in rebind_store 2026/07/29 02:36 2026/07/29 02:36 2026/07/29 03:06 7be3c40b
▶ ▼ Discussions (4)
Title Replies (including bot) Last reply
[PATCH v3 0/2] usbip: usbip_host: remove legacy rebind_store in favor of drivers_probe 10 (10) 2026/08/31 10:25
[syzbot] [usb?] general protection fault in rebind_store 0 (2) 2026/08/19 14:59
[PATCH v2] usbip: usbip_host: fix null pointer dereference in 6 (6) 2026/08/08 16:07
[PATCH] usbip: usbip_host: Fix null pointer dereference in rebind_store 6 (6) 2026/08/06 17:25
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.6 general protection fault in rebind_store 2 11 27d 49d 0/2 upstream: reported on 2026/07/29 03:10
linux-6.1 BUG: unable to handle kernel paging request in rebind_store 8 3 42d 42d 0/3 upstream: reported on 2026/08/05 04:55

Sample crash report:
Oops: general protection fault, probably for non-canonical address 0xdffffc000000001e: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x00000000000000f0-0x00000000000000f7]
CPU: 0 UID: 0 PID: 5910 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:do_rebind drivers/usb/usbip/stub_main.c:204 [inline]
RIP: 0010:rebind_store+0x147/0x2d0 drivers/usb/usbip/stub_main.c:264
Code: 53 01 00 00 48 89 d8 48 c1 e0 07 4c 8b b0 b0 33 cb 9b 48 b8 00 00 00 00 00 fc ff df 49 8d be f0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 30 01 00 00 4d 8b be f0 00 00 00 4d 85 ff 74 3c
RSP: 0018:ffffc90003757c38 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 000000000000001e RSI: 0000000000000004 RDI: 00000000000000f0
RBP: ffffffff9bcb33b0 R08: 0000000000000000 R09: fffffbfff3796678
R10: ffffffff9bcb33c3 R11: 0000000000000001 R12: 0000000000000004
R13: ffff888022ee6880 R14: 0000000000000000 R15: ffff88802d772c00
FS:  00005555600d0500(0000) GS:ffff8880d5b5f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f812f270050 CR3: 0000000038209000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 drv_attr_store+0x74/0xb0 drivers/base/bus.c:125
 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:145
 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x6af/0x1050 fs/read_write.c:687
 ksys_write+0x12a/0x250 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f812f39e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd9fbbfcd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f812f625fa0 RCX: 00007f812f39e159
RDX: 0000000000000004 RSI: 0000200000000200 RDI: 0000000000000005
RBP: 00007f812f435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f812f625fac R14: 00007f812f625fa0 R15: 00007f812f625fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_rebind drivers/usb/usbip/stub_main.c:204 [inline]
RIP: 0010:rebind_store+0x147/0x2d0 drivers/usb/usbip/stub_main.c:264
Code: 53 01 00 00 48 89 d8 48 c1 e0 07 4c 8b b0 b0 33 cb 9b 48 b8 00 00 00 00 00 fc ff df 49 8d be f0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 30 01 00 00 4d 8b be f0 00 00 00 4d 85 ff 74 3c
RSP: 0018:ffffc90003757c38 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 000000000000001e RSI: 0000000000000004 RDI: 00000000000000f0
RBP: ffffffff9bcb33b0 R08: 0000000000000000 R09: fffffbfff3796678
R10: ffffffff9bcb33c3 R11: 0000000000000001 R12: 0000000000000004
R13: ffff888022ee6880 R14: 0000000000000000 R15: ffff88802d772c00
FS:  00005555600d0500(0000) GS:ffff8880d5e5f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005608c445f330 CR3: 0000000038209000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	53                   	push   %rbx
   1:	01 00                	add    %eax,(%rax)
   3:	00 48 89             	add    %cl,-0x77(%rax)
   6:	d8 48 c1             	fmuls  -0x3f(%rax)
   9:	e0 07                	loopne 0x12
   b:	4c 8b b0 b0 33 cb 9b 	mov    -0x6434cc50(%rax),%r14
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df
  1c:	49 8d be f0 00 00 00 	lea    0xf0(%r14),%rdi
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 30 01 00 00    	jne    0x164
  34:	4d 8b be f0 00 00 00 	mov    0xf0(%r14),%r15
  3b:	4d 85 ff             	test   %r15,%r15
  3e:	74 3c                	je     0x7c

Crashes (58):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/06 13:08 upstream 9f0346dcbea3 4f7b22a0 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/19 14:59 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 21d6ac051080 1e72964b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in rebind_store
2026/08/23 00:55 upstream 66fb95a52111 1e72964b .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in rebind_store
2026/09/10 20:41 upstream 50d05c7c76c9 1fe56c0a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in rebind_store
2026/08/13 14:21 upstream 3d6d817622b0 a9ede23c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in rebind_store
2026/08/13 14:21 upstream 3d6d817622b0 a9ede23c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in rebind_store
2026/08/13 01:44 upstream 3d6d817622b0 7ae4acc7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in rebind_store
2026/08/10 15:42 upstream db2ddb871435 039457bd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in rebind_store
2026/08/10 15:42 upstream db2ddb871435 039457bd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in rebind_store
2026/08/03 11:24 upstream 075b74841bd0 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in rebind_store
2026/08/03 11:23 upstream 075b74841bd0 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in rebind_store
2026/07/30 05:54 upstream 11028ab62899 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in rebind_store
2026/07/30 05:54 upstream 11028ab62899 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in rebind_store
2026/07/30 05:54 upstream 11028ab62899 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in rebind_store
2026/07/30 05:54 upstream 11028ab62899 2377cd3d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in rebind_store
2026/07/29 13:03 upstream fc02acf6ac0c cb1587ea .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in rebind_store
2026/07/29 13:02 upstream fc02acf6ac0c cb1587ea .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in rebind_store
2026/07/29 13:02 upstream fc02acf6ac0c cb1587ea .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root general protection fault in rebind_store
2026/07/27 13:32 upstream f5098b6bae76 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root general protection fault in rebind_store
2026/08/31 14:41 upstream cee9395acd80 00e9c810 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/31 11:12 upstream cee9395acd80 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/31 04:35 upstream a23cbb05744b 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/31 00:32 upstream a23cbb05744b 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/30 20:15 upstream a23cbb05744b 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/30 14:40 upstream 08dbfad3f504 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/30 09:49 upstream 08dbfad3f504 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/30 06:59 upstream 08dbfad3f504 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/30 05:20 upstream 08dbfad3f504 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/30 03:51 upstream 08dbfad3f504 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/30 03:38 upstream 08dbfad3f504 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/29 23:20 upstream 08dbfad3f504 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/29 23:05 upstream 08dbfad3f504 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/29 22:32 upstream 08dbfad3f504 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/29 13:50 upstream cf72cbb39da8 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/29 11:35 upstream cf72cbb39da8 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/29 02:10 upstream cf72cbb39da8 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/29 02:10 upstream cf72cbb39da8 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/14 22:43 upstream a5161661ae99 746171ee .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/14 15:43 upstream 2f1baf1fc892 2cf1fbb7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/14 14:54 upstream 2f1baf1fc892 2cf1fbb7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/13 21:56 upstream 3aa1dcaa4f6f b13552fe .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/07 14:35 upstream f9a2394a2348 e4ef95d6 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/05 14:41 upstream c21bb4193868 1eed00d1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/05 12:02 upstream c21bb4193868 1eed00d1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/05 01:45 upstream 562bfb501c54 52aa2820 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream general protection fault in rebind_store
2026/08/08 08:04 upstream 3f008280327b 5d63f80b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in rebind_store
2026/08/02 17:32 upstream 2d2338c93da7 e611ffe1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in rebind_store
2026/07/28 08:51 upstream 62cc90241548 4a865b71 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in rebind_store
2026/08/31 08:33 linux-next e30626823a40 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in rebind_store
2026/08/27 02:29 linux-next f82a5da2f049 a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in rebind_store
2026/08/27 00:44 linux-next f82a5da2f049 a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in rebind_store
2026/07/28 10:44 linux-next cc2b5f627e8c 45ae1df4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce general protection fault in rebind_store
2026/08/19 13:28 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 21d6ac051080 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in rebind_store
* Struck through repros no longer work on HEAD.