ci2 starts bisection 2026-10-14 19:45:42.976143173 +0000 UTC m=+30360.668947219 bisecting fixing commit since 54275df9611d69042112cf28b00353757bb70e67 building syzkaller on 746171eef8d3611ed06d1a92ef68d5bee5031150 ensuring issue is reproducible on original commit 54275df9611d69042112cf28b00353757bb70e67 testing commit 54275df9611d69042112cf28b00353757bb70e67 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 8a96ebf0aa68c23e5012cbecf9e6b1e8da57b991987c4b301304da4ef95586e2 all runs: crashed: general protection fault in software_node_register representative crash: general protection fault in software_node_register, types: [DoS] check whether we can drop unnecessary instrumentation disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed testing commit 54275df9611d69042112cf28b00353757bb70e67 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 485e30b2a789e54f4c8eb44f87a456e1fdd42f04b0417ae95a0f5eea1809768f all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in software_node_register representative crash: BUG: unable to handle kernel NULL pointer dereference in software_node_register, types: [NULL-POINTER-DEREFERENCE] the bug reproduces without the instrumentation disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed kconfig minimization: base=4925 full=6218 leaves diff=255 split chunks (needed=false): <255> split chunk #0 of len 255 into 5 parts testing without sub-chunk 1/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed testing commit 54275df9611d69042112cf28b00353757bb70e67 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 678585d2a6dc7348d3a4f73df824f203cd012c292cc29cb9b68bb835426391b1 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in software_node_register representative crash: BUG: unable to handle kernel NULL pointer dereference in software_node_register, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 54275df9611d69042112cf28b00353757bb70e67 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 1241d2f483f22f4a057a1d0b2092480ecc316c658cba7c68d34adfd7ec52bd22 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in software_node_register representative crash: BUG: unable to handle kernel NULL pointer dereference in software_node_register, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 54275df9611d69042112cf28b00353757bb70e67 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 5b879d80efee41b77bb4099b3972d2b7e3fec4dcc167b9087dbc05ebd842d63b all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in software_node_register representative crash: BUG: unable to handle kernel NULL pointer dereference in software_node_register, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed testing commit 54275df9611d69042112cf28b00353757bb70e67 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 663ee8c1c89b4050e0d4d289302d8883de9621814c95648ac733f1765e73a7c1 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in software_node_register representative crash: BUG: unable to handle kernel NULL pointer dereference in software_node_register, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed testing commit 54275df9611d69042112cf28b00353757bb70e67 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 failed building 54275df9611d69042112cf28b00353757bb70e67: net/socket.c:1189:(.text+0x213b): undefined reference to `wext_handle_ioctl' net/socket.c:3390:(.text+0x238f): undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:343:(.text+0x109): undefined reference to `wext_proc_exit' net/core/net-procfs.c:327:(.text+0x1e4): undefined reference to `wext_proc_init' minimized to 51 configs; suspects: [HID_ZEROPLUS USB_LINK_LAYER_TEST USB_MON USB_NET_CDC_MBIM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_DM9601 USB_NET_GL620A USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD USB_OHCI_HCD_PCI USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_PRINTER USB_SERIAL USB_SERIAL_FTDI_SIO USB_SERIAL_GENERIC USB_SERIAL_PL2303 USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_TRANCEVIBRATOR USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_WDM USB_XHCI_PCI_RENESAS WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_ZYDAS ZEROPLUS_FF] disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed testing current HEAD ff23d765b06f6f38b7b368ad77a51d6ed910fe84 testing commit ff23d765b06f6f38b7b368ad77a51d6ed910fe84 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: b8dc1b59b3b209eadf5d3e267c61fcae98b447cdd2aa7cfc689edd44d48b1e58 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in software_node_register representative crash: BUG: unable to handle kernel NULL pointer dereference in software_node_register, types: [NULL-POINTER-DEREFERENCE] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 2h11m0.643135909s (build: 23m5.467699218s, test: 1h27m59.337636646s) crash still not fixed or there were kernel test errors commit msg: Merge 2a5f794b8be1 ("drm/bridge: cdns-mhdp8546: Return an error pointer on allocation failure") into android13-5.15-lts crash: BUG: unable to handle kernel NULL pointer dereference in software_node_register BUG: kernel NULL pointer dereference, address: 0000000000000008 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 11283d067 P4D 11283d067 PUD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 467 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:software_node_register+0xc/0x120 drivers/base/swnode.c:957 Code: e8 89 d5 ef ff 5b 41 5c 5d c3 48 83 c7 10 e8 bb dd 69 00 5b 41 5c 5d c3 c3 0f 1f 44 00 00 55 48 89 e5 41 55 49 89 fd 41 54 53 <48> 8b 5f 08 48 85 db 0f 84 e3 00 00 00 48 8b 05 60 80 c1 01 48 8d RSP: 0018:ffffc900004cfb60 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000000000000c0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900004cfb78 R08: ffff88810f941d80 R09: ffff88810f941d80 R10: ffffffff82c67900 R11: 0000000000000018 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8881001d50d0 R15: ffff8881001d5000 FS: 00007fde03ee96c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 0000000112be0000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: device_add_software_node+0xef/0x170 drivers/base/swnode.c:1045 dwc3_pci_quirks drivers/usb/dwc3/dwc3-pci.c:263 [inline] dwc3_pci_probe+0x19f/0x3c0 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+0xd6/0x150 drivers/pci/pci-driver.c:448 call_driver_probe drivers/base/dd.c:516 [inline] really_probe.part.0+0xa8/0x2c0 drivers/base/dd.c:595 really_probe drivers/base/dd.c:557 [inline] __driver_probe_device+0x95/0x140 drivers/base/dd.c:755 device_driver_attach+0x44/0xb0 drivers/base/dd.c:1076 bind_store+0xae/0x100 drivers/base/bus.c:216 drv_attr_store+0x1c/0x30 drivers/base/bus.c:77 sysfs_kf_write+0x34/0x40 fs/sysfs/file.c:143 kernfs_fop_write_iter+0xfc/0x1c0 fs/kernfs/file.c:296 call_write_iter include/linux/fs.h:2218 [inline] new_sync_write+0x105/0x190 fs/read_write.c:507 vfs_write+0x23c/0x2e0 fs/read_write.c:594 ksys_write+0x62/0xe0 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+0x15/0x20 fs/read_write.c:656 x64_sys_call+0x97b/0x990 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fde040a90d9 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:00007fde03ee9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fde04331090 RCX: 00007fde040a90d9 RDX: 000000000000000d RSI: 0000200000000240 RDI: 0000000000000005 RBP: 00007fde04140024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fde04331128 R14: 00007fde04331090 R15: 00007ffea5d10be8 Modules linked in: CR2: 0000000000000008 ---[ end trace 63ce0284f1c2dd01 ]--- RIP: 0010:software_node_register+0xc/0x120 drivers/base/swnode.c:957 Code: e8 89 d5 ef ff 5b 41 5c 5d c3 48 83 c7 10 e8 bb dd 69 00 5b 41 5c 5d c3 c3 0f 1f 44 00 00 55 48 89 e5 41 55 49 89 fd 41 54 53 <48> 8b 5f 08 48 85 db 0f 84 e3 00 00 00 48 8b 05 60 80 c1 01 48 8d RSP: 0018:ffffc900004cfb60 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000000000000c0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900004cfb78 R08: ffff88810f941d80 R09: ffff88810f941d80 R10: ffffffff82c67900 R11: 0000000000000018 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8881001d50d0 R15: ffff8881001d5000 FS: 00007fde03ee96c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 0000000112be0000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 89 d5 ef ff call 0xffefd58e 5: 5b pop %rbx 6: 41 5c pop %r12 8: 5d pop %rbp 9: c3 ret a: 48 83 c7 10 add $0x10,%rdi e: e8 bb dd 69 00 call 0x69ddce 13: 5b pop %rbx 14: 41 5c pop %r12 16: 5d pop %rbp 17: c3 ret 18: c3 ret 19: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 1e: 55 push %rbp 1f: 48 89 e5 mov %rsp,%rbp 22: 41 55 push %r13 24: 49 89 fd mov %rdi,%r13 27: 41 54 push %r12 29: 53 push %rbx * 2a: 48 8b 5f 08 mov 0x8(%rdi),%rbx <-- trapping instruction 2e: 48 85 db test %rbx,%rbx 31: 0f 84 e3 00 00 00 je 0x11a 37: 48 8b 05 60 80 c1 01 mov 0x1c18060(%rip),%rax # 0x1c1809e 3e: 48 rex.W 3f: 8d .byte 0x8d