general protection fault in software_node_register

Status: upstream: reported C repro on 2026/08/16 02:33
Reported-by: syzbot+cd9dbc2be06ae44cfe11@syzkaller.appspotmail.com
First crash: 5d13h, last: 5d13h
Similar bugs (7)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 general protection fault in software_node_register 2 3 4d05h 17d 0/2 premoderation: reported on 2026/08/04 14:45
android-6-12 general protection fault in software_node_register 2 syz, C 5 4d06h 17d 0/1 premoderation: reported C repro on 2026/08/04 13:06
upstream general protection fault in software_node_register acpi prio:low 8 syz, C 37 3d14h 15d 0/29 upstream: reported C repro on 2026/08/05 22:45
android-5-10 general protection fault in software_node_register 2 syz, C 4 1d12h 8d16h 0/2 upstream: reported C repro on 2026/08/12 23:49
linux-6.6 general protection fault in software_node_register origin:upstream 2 syz, C 5 8d22h 16d 0/2 upstream: reported C repro on 2026/08/04 22:11
linux-6.1 general protection fault in software_node_register 2 syz, C 9 3d18h 16d 0/3 upstream: reported C repro on 2026/08/04 22:24
linux-5.15 general protection fault in software_node_register 2 syz, C 3 15d 16d 0/3 upstream: reported C repro on 2026/08/04 18:41

Sample crash report:
sd 0:0:1:0: [sda] Synchronizing SCSI cache
general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 303 Comm: syz-executor264 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:software_node_register+0x36/0x1f0 drivers/base/swnode.c:957
Code: 53 48 83 ec 18 49 89 fe 48 bb 00 00 00 00 00 fc ff df e8 5d 78 a1 fe 4c 89 75 c8 4d 8d 66 08 4c 89 e0 48 c1 e8 03 48 89 45 c0 <80> 3c 18 00 74 08 4c 89 e7 e8 ac e7 e0 fe 4d 8b 34 24 4d 85 f6 4c
RSP: 0018:ffffc900009b7770 EFLAGS: 00010202
RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffff88810b25a780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900009b77b0 R08: ffff88810aa797bf R09: 1ffff1102154f2f7
R10: dffffc0000000000 R11: ffffed102154f2f8 R12: 0000000000000008
R13: ffff888123ba7010 R14: 0000000000000000 R15: 0000000000000000
FS:  000055556b63d3c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055cde5ca8148 CR3: 00000001239d8000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 device_add_software_node+0x1a3/0x300 drivers/base/swnode.c:1045
 dwc3_pci_quirks drivers/usb/dwc3/dwc3-pci.c:263 [inline]
 dwc3_pci_probe+0x548/0x920 drivers/usb/dwc3/dwc3-pci.c:328
 local_pci_probe drivers/pci/pci-driver.c:323 [inline]
 pci_call_probe drivers/pci/pci-driver.c:380 [inline]
 __pci_device_probe drivers/pci/pci-driver.c:405 [inline]
 pci_device_probe+0x27a/0x440 drivers/pci/pci-driver.c:448
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x27d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x193/0x270 drivers/base/dd.c:755
 device_driver_attach+0xd7/0x1d0 drivers/base/dd.c:1076
 bind_store+0x33b/0x380 drivers/base/bus.c:216
 drv_attr_store+0x79/0xa0 drivers/base/bus.c:77
 sysfs_kf_write+0x129/0x150 fs/sysfs/file.c:139
 kernfs_fop_write_iter+0x2bd/0x400 fs/kernfs/file.c:296
 call_write_iter include/linux/fs.h:2212 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x831/0xfd0 fs/read_write.c:594
 ksys_write+0x14a/0x260 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:656
 x64_sys_call+0x8ef/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:2
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f3e5ce48db9
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:00007ffd6f71c368 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffd6f71c498 RCX: 00007f3e5ce48db9
RDX: 000000000000000d RSI: 0000200000000240 RDI: 0000000000000005
RBP: 0000000000000001 R08: 00007ffd6f71c498 R09: 00007ffd6f71c498
R10: 00007ffd6f71c498 R11: 0000000000000246 R12: 00007ffd6f71c488
R13: 0000000000000002 R14: 00007f3e5ced9ca0 R15: 0000000000000002
 </TASK>
Modules linked in:
---[ end trace b2736b066461ef72 ]---
RIP: 0010:software_node_register+0x36/0x1f0 drivers/base/swnode.c:957
Code: 53 48 83 ec 18 49 89 fe 48 bb 00 00 00 00 00 fc ff df e8 5d 78 a1 fe 4c 89 75 c8 4d 8d 66 08 4c 89 e0 48 c1 e8 03 48 89 45 c0 <80> 3c 18 00 74 08 4c 89 e7 e8 ac e7 e0 fe 4d 8b 34 24 4d 85 f6 4c
RSP: 0018:ffffc900009b7770 EFLAGS: 00010202
RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffff88810b25a780
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	53                   	push   %rbx
   1:	48 83 ec 18          	sub    $0x18,%rsp
   5:	49 89 fe             	mov    %rdi,%r14
   8:	48 bb 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbx
   f:	fc ff df
  12:	e8 5d 78 a1 fe       	call   0xfea17874
  17:	4c 89 75 c8          	mov    %r14,-0x38(%rbp)
  1b:	4d 8d 66 08          	lea    0x8(%r14),%r12
  1f:	4c 89 e0             	mov    %r12,%rax
  22:	48 c1 e8 03          	shr    $0x3,%rax
  26:	48 89 45 c0          	mov    %rax,-0x40(%rbp)
* 2a:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	4c 89 e7             	mov    %r12,%rdi
  33:	e8 ac e7 e0 fe       	call   0xfee0e7e4
  38:	4d 8b 34 24          	mov    (%r12),%r14
  3c:	4d 85 f6             	test   %r14,%r14
  3f:	4c                   	rex.WR

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/16 02:31 android13-5.15-lts 54275df9611d 746171ee .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 general protection fault in software_node_register
* Struck through repros no longer work on HEAD.