ci2 starts bisection 2026-07-29 10:07:41.244154323 +0000 UTC m=+30841.037737945
bisecting fixing commit since c85054db46181ee85f10be997f41b347c85bd89b
building syzkaller on fb92f11c4789d9647a75c09c983dbee5c8488ccf
ensuring issue is reproducible on original commit c85054db46181ee85f10be997f41b347c85bd89b

testing commit c85054db46181ee85f10be997f41b347c85bd89b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: c3feb74791b861bbf0ee93fb02caa4aba5be551edc8618064c69ce99da46d541
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
check whether we can drop unnecessary instrumentation
disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit c85054db46181ee85f10be997f41b347c85bd89b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 7e9ddd13fb06899995ffd55673169dd3dd9d232f9bbf9e66ddc869c1bf20f0d2
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
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=4921 full=6218 leaves diff=256
split chunks (needed=false): <256>
split chunk #0 of len 256 into 5 parts
testing without sub-chunk 1/5
disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit c85054db46181ee85f10be997f41b347c85bd89b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: d8f96c4f7b2f113415e253978f4cbcf67cc46b56f1d5a09bbc979a7e3dffbab0
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing commit c85054db46181ee85f10be997f41b347c85bd89b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 15e93a00bb19e0170dfd75759e8735c153e5cdd419e8cc77bd0bceb131e879b4
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit c85054db46181ee85f10be997f41b347c85bd89b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: f4070e4afb74d4333eb4a08c76ed46ca6e58b800175982610c576b8046316c51
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit c85054db46181ee85f10be997f41b347c85bd89b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 8ce0efb9a881e0d6e142128729fc7f047dc6644d693556695fe68a9241d03755
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit c85054db46181ee85f10be997f41b347c85bd89b gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
failed building c85054db46181ee85f10be997f41b347c85bd89b: net/socket.c:1188:(.text+0x210b): undefined reference to `wext_handle_ioctl'
net/socket.c:3389:(.text+0x235f): 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 48 configs; suspects: [HID_ZEROPLUS 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 [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing current HEAD 61d896ee2a8005c4e9d9da24421ba554601421be
testing commit 61d896ee2a8005c4e9d9da24421ba554601421be gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: aa0281fc490296cbb16c217c4ea3b0a42b85324bb8e660889388d4071a8989ed
all runs: crashed: lost connection to test machine
representative crash: lost connection to test machine, types: [LOST_CONNECTION]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 1h34m24.408791068s (build: 27m48.992020273s, test: 39m36.860807098s)
crash still not fixed or there were kernel test errors
commit msg: Revert "hdlc_ppp: sync per-proto timers before freeing hdlc state"
crash: lost connection to test machine