ci2 starts bisection 2026-07-06 01:19:26.887940878 +0000 UTC m=+188960.713844394
bisecting fixing commit since 8969ee93a483c1b007a1aa69cd1f1cf89cbce72f
building syzkaller on 197909be84fb372381af6fab3a7be03a06f9f7d1
ensuring issue is reproducible on original commit 8969ee93a483c1b007a1aa69cd1f1cf89cbce72f

testing commit 8969ee93a483c1b007a1aa69cd1f1cf89cbce72f gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 0598b3a5ec5a324c20296ba2f31eff6e0167711e38aebeafb7fc10b9ceeeed07
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 8969ee93a483c1b007a1aa69cd1f1cf89cbce72f gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 49cf0173a95957c5811f940617097263090ee45a493876be774860b64d26b1cb
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 8969ee93a483c1b007a1aa69cd1f1cf89cbce72f gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 91ebbad02ab179f3b605ac79b8edeb0ecb968b2ed198beb6a7810ca661f3a6cd
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 8969ee93a483c1b007a1aa69cd1f1cf89cbce72f gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 5069bd823a58c09f4d1a2c64106fcf3fc8138e699e2593e640ed970895d9f251
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 [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
testing commit 8969ee93a483c1b007a1aa69cd1f1cf89cbce72f gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: a725e39f93f6595894b9f0705419ae7042623ddadda29d3602103b30ba856774
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 8969ee93a483c1b007a1aa69cd1f1cf89cbce72f gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 01f15bd7caca41321445ac9d6610996d352501b76cc6a6a76253088a39619c9f
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 [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing commit 8969ee93a483c1b007a1aa69cd1f1cf89cbce72f gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
failed building 8969ee93a483c1b007a1aa69cd1f1cf89cbce72f: 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 [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing current HEAD a64de05eba09515a3ca4721c5596929477e466b8
testing commit a64de05eba09515a3ca4721c5596929477e466b8 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 1139668da14cc09517819bb35e5b8a8a9aa21ca6f1b587074d9cda38ff8e5afb
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: 2h2m0.95307118s (build: 31m56.907122301s, test: 42m39.530999169s)
crash still not fixed or there were kernel test errors
commit msg: Revert "Bluetooth: hci_core: Fix use-after-free in vhci_flush()"
crash: lost connection to test machine