ci2 starts bisection 2025-10-10 10:44:36.999731595 +0000 UTC m=+38675.778198102
bisecting fixing commit since c750dc582629811994978507b7055b679be149f0
building syzkaller on 32a0e5edfeef60e894c453dc9e9ae45528626ef1
ensuring issue is reproducible on original commit c750dc582629811994978507b7055b679be149f0

testing commit c750dc582629811994978507b7055b679be149f0 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: fc1a5e282236f46b9fcc9baed6d358667b1123ec99c7512c9a7982703b1089f3
all runs: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
representative crash: kernel panic: EXT4-fs (device loop2): panic forced after error, types: [DoS]
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 c750dc582629811994978507b7055b679be149f0 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: f513e4c170681afcaeaeff22127ee1dce980342cfdadc2891dc9b8db4878b0e0
all runs: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
representative crash: kernel panic: EXT4-fs (device loop2): panic forced after error, types: [DoS]
the bug reproduces without the instrumentation
disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
kconfig minimization: base=5186 full=6556 leaves diff=265
split chunks (needed=false): <265>
split chunk #0 of len 265 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 c750dc582629811994978507b7055b679be149f0 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: a6c427149aaa223a72bcb5f3a845945c79b1efed2dc143f4a09d4ddeb793e40e
all runs: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
representative crash: kernel panic: EXT4-fs (device loop2): panic forced after error, types: [DoS]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing commit c750dc582629811994978507b7055b679be149f0 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: b8b47611134001725c05fc9106e9a2c0e6ba37b5e984ea20799b4fb3707fb4ca
all runs: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
representative crash: kernel panic: EXT4-fs (device loop2): panic forced after error, types: [DoS]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed
testing commit c750dc582629811994978507b7055b679be149f0 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: a45d6eb3972da880befeb6986774b26834a78e80804c682df02a4ea8872f6df4
all runs: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
representative crash: kernel panic: EXT4-fs (device loop2): panic forced after error, types: [DoS]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed
testing commit c750dc582629811994978507b7055b679be149f0 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 5e32161e5bb4d703ea0518aefc4349928e52aeda6bdf39e58ae6c717063b159a
all runs: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
representative crash: kernel panic: EXT4-fs (device loop2): panic forced after error, types: [DoS]
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 c750dc582629811994978507b7055b679be149f0 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
failed building c750dc582629811994978507b7055b679be149f0: ld.lld: error: undefined symbol: wext_proc_init
ld.lld: error: undefined symbol: wext_proc_exit
ld.lld: error: undefined symbol: wext_handle_ioctl
ld.lld: error: undefined symbol: compat_wext_handle_ioctl
minimized to 53 configs; suspects: [HID_ZEROPLUS 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_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 V4L2_ASYNC V4L2_FWNODE VIDEO_CAMERA_SENSOR WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_PURELIFI WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_SILABS WLAN_VENDOR_ZYDAS ZEROPLUS_FF]
disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed
testing current HEAD 1257aa4519ee5d49e465b0dcc85cc7e4a24619d5
testing commit 1257aa4519ee5d49e465b0dcc85cc7e4a24619d5 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 4b666045bd65ef72be0ffa10e3e4009b43e36d23028230a41a4da93696b68715
all runs: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
representative crash: kernel panic: EXT4-fs (device loop2): panic forced after error, types: [DoS]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 1h47m5.641997028s (build: 1h13m13.468681078s, test: 30m9.673057395s)
crash still not fixed or there were kernel test errors
commit msg: UPSTREAM: tls: make sure to abort the stream if headers are bogus
crash: kernel panic: EXT4-fs (device loop2): panic forced after error
loop2: detected capacity change from 0 to 512
ext4: Bad value for 'init_itable'
EXT4-fs error (device loop2): ext4_free_branches:1030: inode #13: comm syz.2.19: invalid indirect mapped block 10 (level 1)
Kernel panic - not syncing: EXT4-fs (device loop2): panic forced after error
Kernel Offset: disabled
Rebooting in 86400 seconds..