ci2 starts bisection 2025-09-16 17:42:55.163312772 +0000 UTC m=+426487.038127899
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: 5dbd328e87c2a65106c9803fa8bbd69446fbc2d3cefe5e8e372ea587d351480c
run #0: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #1: crashed: kernel panic: EXT4-fs (device loop1): panic forced after error
run #2: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #3: crashed: kernel panic: EXT4-fs (device loop1): panic forced after error
run #4: crashed: kernel panic: EXT4-fs (device loop5): panic forced after error
run #5: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #6: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #7: crashed: kernel panic: EXT4-fs (device loop3): panic forced after error
run #8: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
run #9: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #10: crashed: kernel panic: EXT4-fs (device loop1): panic forced after error
run #11: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #12: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
run #13: crashed: kernel panic: EXT4-fs (device loop0): panic forced after error
run #14: crashed: kernel panic: EXT4-fs (device loop1): panic forced after error
run #15: crashed: kernel panic: EXT4-fs (device loop0): panic forced after error
run #16: crashed: kernel panic: EXT4-fs (device loop5): panic forced after error
run #17: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #18: crashed: kernel panic: EXT4-fs (device loop1): panic forced after error
run #19: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
representative crash: kernel panic: EXT4-fs (device loop6): panic forced after error, types: [DoS]
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 c750dc582629811994978507b7055b679be149f0 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: b245643b88701f66c4fcc2fd6186f68c18ab8c7739d249f70bb70e4089ff2295
run #0: crashed: kernel panic: EXT4-fs (device loop1): panic forced after error
run #1: crashed: kernel panic: EXT4-fs (device loop0): panic forced after error
run #2: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #3: crashed: kernel panic: EXT4-fs (device loop1): panic forced after error
run #4: crashed: kernel panic: EXT4-fs (device loop3): panic forced after error
run #5: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
run #6: crashed: kernel panic: EXT4-fs (device loop3): panic forced after error
run #7: crashed: kernel panic: EXT4-fs (device loop1): panic forced after error
run #8: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #9: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
representative crash: kernel panic: EXT4-fs (device loop1): panic forced after error, types: [DoS]
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=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 [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], 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: 5040c9e031801e9fc86afa50be166095271b76600c92b754397457f450209215
run #0: crashed: kernel panic: EXT4-fs (device loop0): panic forced after error
run #1: crashed: kernel panic: EXT4-fs (device loop3): panic forced after error
run #2: crashed: kernel panic: EXT4-fs (device loop0): panic forced after error
run #3: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
run #4: crashed: kernel panic: EXT4-fs (device loop1): panic forced after error
run #5: crashed: kernel panic: EXT4-fs (device loop5): panic forced after error
run #6: crashed: kernel panic: EXT4-fs (device loop1): panic forced after error
run #7: crashed: kernel panic: EXT4-fs (device loop1): panic forced after error
run #8: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #9: crashed: kernel panic: EXT4-fs (device loop0): panic forced after error
representative crash: kernel panic: EXT4-fs (device loop0): panic forced after error, types: [DoS]
the chunk can be dropped
testing without sub-chunk 2/5
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
kernel signature: cb284d9e700f94ef851245fe043efbf687e3d1d3611b2b1c0408253fc0379fbd
run #0: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #1: crashed: kernel panic: EXT4-fs (device loop0): panic forced after error
run #2: crashed: kernel panic: EXT4-fs (device loop3): panic forced after error
run #3: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #4: crashed: kernel panic: EXT4-fs (device loop0): panic forced after error
run #5: crashed: kernel panic: EXT4-fs (device loop5): panic forced after error
run #6: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #7: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #8: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #9: crashed: kernel panic: EXT4-fs (device loop5): panic forced after error
representative crash: kernel panic: EXT4-fs (device loop6): 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: 00001e1ac1b641b7f3abecc0acda8355c201f0cd638f44abef766ffc43a861c5
run #0: crashed: kernel panic: EXT4-fs (device loop4): panic forced after error
run #1: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
run #2: crashed: kernel panic: EXT4-fs (device loop0): panic forced after error
run #3: crashed: kernel panic: EXT4-fs (device loop0): panic forced after error
run #4: crashed: kernel panic: EXT4-fs (device loop3): panic forced after error
run #5: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
run #6: crashed: kernel panic: EXT4-fs (device loop4): panic forced after error
run #7: crashed: kernel panic: EXT4-fs (device loop4): panic forced after error
run #8: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
run #9: crashed: kernel panic: EXT4-fs (device loop3): panic forced after error
representative crash: kernel panic: EXT4-fs (device loop4): panic forced after error, types: [DoS]
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 c750dc582629811994978507b7055b679be149f0 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: f3249390df806d817c2505deb02182de82c2b2fb5fe59f63bc9c46b917f6a880
run #0: crashed: kernel panic: EXT4-fs (device loop4): panic forced after error
run #1: crashed: kernel panic: EXT4-fs (device loop4): panic forced after error
run #2: crashed: kernel panic: EXT4-fs (device loop0): panic forced after error
run #3: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
run #4: crashed: kernel panic: EXT4-fs (device loop5): panic forced after error
run #5: crashed: kernel panic: EXT4-fs (device loop5): panic forced after error
run #6: crashed: kernel panic: EXT4-fs (device loop0): panic forced after error
run #7: crashed: kernel panic: EXT4-fs (device loop4): panic forced after error
run #8: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #9: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
representative crash: kernel panic: EXT4-fs (device loop4): panic forced after error, types: [DoS]
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 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_handle_ioctl
ld.lld: error: undefined symbol: compat_wext_handle_ioctl
ld.lld: error: undefined symbol: wext_proc_init
ld.lld: error: undefined symbol: wext_proc_exit
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 [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing current HEAD 532c452095b99e52580db02cd5842365b2bbb615
testing commit 532c452095b99e52580db02cd5842365b2bbb615 gcc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
kernel signature: 2b06656aa1b47286f7b6b2840d28d4db2e45480eca254bb6becd25b91d528daa
run #0: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
run #1: crashed: kernel panic: EXT4-fs (device loop6): panic forced after error
run #2: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
run #3: crashed: kernel panic: EXT4-fs (device loop1): panic forced after error
run #4: crashed: kernel panic: EXT4-fs (device loop1): panic forced after error
run #5: crashed: kernel panic: EXT4-fs (device loop2): panic forced after error
run #6: crashed: kernel panic: EXT4-fs (device loop5): panic forced after error
run #7: crashed: kernel panic: EXT4-fs (device loop4): panic forced after error
run #8: crashed: kernel panic: EXT4-fs (device loop0): panic forced after error
run #9: crashed: kernel panic: EXT4-fs (device loop6): 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: 1h21m43.490581135s (build: 35m20.475193552s, test: 31m55.804396944s)
crash still not fixed or there were kernel test errors
commit msg: BACKPORT: FROMGIT: selinux: enable per-file labeling for functionfs
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.2.22: 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..