ci2 starts bisection 2026-05-11 15:33:16.073147517 +0000 UTC m=+32554.644598780
bisecting fixing commit since e625d26dbfea6ec35827f56959c4759459e3395e
building syzkaller on 4fb8ef376b21a14e0ed92c40c92913ac567bd2a3
ensuring issue is reproducible on original commit e625d26dbfea6ec35827f56959c4759459e3395e

testing commit e625d26dbfea6ec35827f56959c4759459e3395e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: bd3be81beed84e81c9cdc2472b8eb82364c29c635889ca6a6c5feba828394c35
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #2: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #3: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #4: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #5: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #6: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #7: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #8: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #9: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #10: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #11: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #12: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #13: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #14: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #15: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #16: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #17: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #18: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #19: crashed: SYZFAIL: tun: can't open /dev/net/tun
representative crash: SYZFAIL: tun: ioctl(TUNSETIFF) failed, types: [SYZ_FAILURE]
check whether we can drop unnecessary instrumentation
disabling configs for [ubsan bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed
testing commit e625d26dbfea6ec35827f56959c4759459e3395e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 44c50ac8937e0e62006c9fa1fae36ab34d0faa06c267af51bc22f07b2f3f29db
run #0: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #1: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #2: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #3: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #4: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #5: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #6: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #7: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #8: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #9: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
representative crash: SYZFAIL: tun: ioctl(TUNSETIFF) failed, types: [SYZ_FAILURE]
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=4788 full=6026 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 e625d26dbfea6ec35827f56959c4759459e3395e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 53bd18ba3c48ba872dd0b9c62af4dc5e3c6957782b815f70d684cbd979f6b738
run #0: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #1: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #2: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #3: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #4: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #5: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #6: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #7: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #8: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #9: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
representative crash: SYZFAIL: tun: ioctl(TUNSETIFF) failed, types: [SYZ_FAILURE]
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 e625d26dbfea6ec35827f56959c4759459e3395e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: f2cd4e4c4866a8e07574bb23d5a59222ec282f46f2e388d91d92d4fa74f2b981
run #0: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #1: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #2: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #3: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #4: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #5: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #6: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #7: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #8: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #9: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
representative crash: SYZFAIL: tun: can't open /dev/net/tun, types: [SYZ_FAILURE]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing commit e625d26dbfea6ec35827f56959c4759459e3395e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 5387e2458383a33f670346869bc3b2faa9481c16672b9adfaeb3795e55b8a3dd
run #0: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #1: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #2: basic kernel testing failed: SYZFAIL: failed to recv rpc
run #3: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #4: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #5: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #6: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #7: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #8: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #9: crashed: SYZFAIL: tun: can't open /dev/net/tun
representative crash: SYZFAIL: tun: can't open /dev/net/tun, types: [SYZ_FAILURE]
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 e625d26dbfea6ec35827f56959c4759459e3395e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 3f2d8b4001111974bfacf58d58f61ca384e7a26154e9c66a9185b17a0bd4dca4
run #0: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #1: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #2: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #3: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #4: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #5: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #6: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #7: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #8: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #9: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
representative crash: SYZFAIL: tun: can't open /dev/net/tun, types: [SYZ_FAILURE]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit e625d26dbfea6ec35827f56959c4759459e3395e gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
failed building e625d26dbfea6ec35827f56959c4759459e3395e: 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 [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed
testing current HEAD 3fa02f6dd0c54d2113ea26680130a6283b95a0d7
testing commit 3fa02f6dd0c54d2113ea26680130a6283b95a0d7 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44
kernel signature: 95e6f500001ccde61f550b2266ce9296212fbb329dc047688ddb85210dd6edbb
run #0: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #1: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #2: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #3: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #4: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #5: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #6: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #7: crashed: SYZFAIL: tun: can't open /dev/net/tun
run #8: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
run #9: crashed: SYZFAIL: tun: ioctl(TUNSETIFF) failed
representative crash: SYZFAIL: tun: can't open /dev/net/tun, types: [SYZ_FAILURE]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 1h47m38.468446686s (build: 48m35.65819776s, test: 43m41.498986142s)
crash still not fixed or there were kernel test errors
commit msg: Revert "netlink: add nla be16/32 types to minlen array"
crash: SYZFAIL: tun: can't open /dev/net/tun
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
SYZFAIL: repeatedly failed to execute the program
proc=2 req=617 state=3 status=67 (errno 9: Bad file descriptor)
connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF