ci2 starts bisection 2026-07-05 12:58:18.165318198 +0000 UTC m=+144491.991221704
bisecting fixing commit since cc0ae2abdc73d5432c9a86d8576c344c68a1e29c
building syzkaller on dcaebc52ee9a07f19b1af93180bb01c9c454c55c
ensuring issue is reproducible on original commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c

testing commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 9e82d9b7cf2cbefd2fc1e4c11beabf6ce4677527a9ac0357a8554d7a5c86ba59
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 [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: ebb41e9b2ae56530885a0252c8f70422b9a67ac39675721242f628ee3e71ff8f
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 [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
kconfig minimization: base=4788 full=6024 leaves diff=248
split chunks (needed=false): <248>
split chunk #0 of len 248 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 cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 29325bead25bd037878b4e9c0f3d0cb9ebeda5e984f0a5ceae608223eabe4a47
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 [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed
testing commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 8003ce11215de06edaf832d8164910135ca92bb93ad3c2558c0582ef20cd3f41
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 54b3a18bc4bb84d5c36b546bc8c73abc48de66679a9625c74260f748cf06e45f
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 cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 658e3b1fd42719bdc06d3969a7f3a32a7d419e53ccabffb4552ad0ea338863d0
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
failed building cc0ae2abdc73d5432c9a86d8576c344c68a1e29c: net/socket.c:1128:(.text+0x817): undefined reference to `wext_handle_ioctl'
net/socket.c:3397:(.text+0xa08): undefined reference to `compat_wext_handle_ioctl'
net/core/net-procfs.c:346:(.text+0x109): undefined reference to `wext_proc_exit'
net/core/net-procfs.c:330:(.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 [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing current HEAD 1bb06dbd8c786cf382d0fde8ff7d5a1fdfc67111
testing commit 1bb06dbd8c786cf382d0fde8ff7d5a1fdfc67111 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 964bfe51a4ca5a09c1b7b784dfe20dae3c9ecd5959acc682e8a3d7e70e50ca78
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: 1h43m52.182370849s (build: 29m23.698332376s, test: 42m42.625663764s)
crash still not fixed or there were kernel test errors
commit msg: Revert "alarmtimer: Check RTC features instead of ops"
crash: lost connection to test machine