ci2 starts bisection 2025-10-11 22:39:30.307935112 +0000 UTC m=+167969.086401629 bisecting fixing commit since f32b52534f1d4df1fc1a6afe6cf4639adebf8a63 building syzkaller on 1804e95e3ff848c11e87e8efe7560f03c011c081 ensuring issue is reproducible on original commit f32b52534f1d4df1fc1a6afe6cf4639adebf8a63 testing commit f32b52534f1d4df1fc1a6afe6cf4639adebf8a63 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3b0634f1dccee9a04b5aa68bf9289ffb56746de5d3f8e369e62478639f03bbe0 all runs: crashed: kernel BUG in ext4_flex_group_add representative crash: kernel BUG in ext4_flex_group_add, types: [BUG] check whether we can drop unnecessary instrumentation disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed testing commit f32b52534f1d4df1fc1a6afe6cf4639adebf8a63 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 273adc9f0dbb349ad1fb5066137c92959244d720e7d3ea1e4687bb33e8b84c17 all runs: crashed: kernel BUG in ext4_flex_group_add representative crash: kernel BUG in ext4_flex_group_add, types: [BUG] the bug reproduces without the instrumentation disabling configs for [memleak ubsan kasan locking atomic_sleep hang], they are not needed kconfig minimization: base=4921 full=6219 leaves diff=255 split chunks (needed=false): <255> split chunk #0 of len 255 into 5 parts testing without sub-chunk 1/5 disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed testing commit f32b52534f1d4df1fc1a6afe6cf4639adebf8a63 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dc587542b8cf754ab606d139aebbf20775cb3e660b2b33da9eb7ea669766ad4f all runs: crashed: kernel BUG in ext4_flex_group_add representative crash: kernel BUG in ext4_flex_group_add, types: [BUG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed testing commit f32b52534f1d4df1fc1a6afe6cf4639adebf8a63 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 67d423095b856bef95ee34f470cbd614c6344369882de924c75dc6ff33d65cb1 all runs: crashed: kernel BUG in ext4_flex_group_add representative crash: kernel BUG in ext4_flex_group_add, types: [BUG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [locking atomic_sleep hang memleak ubsan kasan], they are not needed testing commit f32b52534f1d4df1fc1a6afe6cf4639adebf8a63 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 35d4468bcc1dd33ae45a524a632a4500f21bf24186847dc33ab17c69bbac51a9 all runs: crashed: kernel BUG in ext4_flex_group_add representative crash: kernel BUG in ext4_flex_group_add, types: [BUG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [locking atomic_sleep hang memleak ubsan kasan], they are not needed testing commit f32b52534f1d4df1fc1a6afe6cf4639adebf8a63 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7c6fca6cb10bc27870129626bf84f25c83daf6deed7e4f424241967554033ce2 all runs: crashed: kernel BUG in ext4_flex_group_add representative crash: kernel BUG in ext4_flex_group_add, types: [BUG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [locking atomic_sleep hang memleak ubsan kasan], they are not needed testing commit f32b52534f1d4df1fc1a6afe6cf4639adebf8a63 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building f32b52534f1d4df1fc1a6afe6cf4639adebf8a63: net/socket.c:1191: undefined reference to `wext_handle_ioctl' net/socket.c:3390: undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:343: undefined reference to `wext_proc_exit' net/core/net-procfs.c:327: undefined reference to `wext_proc_init' minimized to 51 configs; suspects: [HID_ZEROPLUS USB_LINK_LAYER_TEST 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 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 [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing current HEAD bce84c40a40be5a627fa563399c00689829c705a testing commit bce84c40a40be5a627fa563399c00689829c705a gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b4bc5168ba20faf67c52dcf4559627a682957fb6989a617d27691b563d481075 all runs: crashed: kernel BUG in ext4_flex_group_add representative crash: kernel BUG in ext4_flex_group_add, types: [BUG] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 1h42m16.830513841s (build: 43m5.850802587s, test: 39m4.473044788s) crash still not fixed or there were kernel test errors commit msg: ANDROID: GKI: fix crc issue with include/linux/can/dev.h crash: kernel BUG in ext4_flex_group_add ------------[ cut here ]------------ kernel BUG at fs/ext4/resize.c:545! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 0 PID: 451 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:setup_new_flex_group_blocks fs/ext4/resize.c:545 [inline] RIP: 0010:ext4_flex_group_add+0xb5c/0x1be0 fs/ext4/resize.c:1512 Code: 89 da eb 04 44 8b 55 80 48 8b 55 98 be 12 06 00 00 48 c7 c7 80 24 80 82 44 89 55 90 e8 3d de fb ff 44 8b 55 90 e9 e9 f9 ff ff <0f> 0b e8 8d 2c d6 ff 48 8b 85 38 ff ff ff 48 63 db 48 8b 40 70 48 RSP: 0018:ffffc90000473c48 EFLAGS: 00010297 RAX: ffff88811c07b400 RBX: ffff88810d7b2000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc90000473d48 R08: ffffc90000473ce8 R09: 0000000000004000 R10: ffff88810db7a800 R11: 2073662d34545845 R12: 0000000000000001 R13: ffff88811c07b400 R14: 0000000000000002 R15: ffff88810db7a800 FS: 00007f0e473736c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0e47352d58 CR3: 000000011a488000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_resize_fs+0xd99/0x1230 fs/ext4/resize.c:2127 __ext4_ioctl+0xea5/0x1570 fs/ext4/ioctl.c:1079 ext4_ioctl+0x9/0x10 fs/ext4/ioctl.c:1282 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x89/0xc0 fs/ioctl.c:860 x64_sys_call+0x912/0x990 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f0e47502be9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0e47373038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0e47729fa0 RCX: 00007f0e47502be9 RDX: 0000200000000140 RSI: 0000000040086610 RDI: 0000000000000004 RBP: 00007f0e47585e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0e4772a038 R14: 00007f0e47729fa0 R15: 00007ffd6201fc08 Modules linked in: ---[ end trace 6d720c120112c6db ]--- RIP: 0010:setup_new_flex_group_blocks fs/ext4/resize.c:545 [inline] RIP: 0010:ext4_flex_group_add+0xb5c/0x1be0 fs/ext4/resize.c:1512 Code: 89 da eb 04 44 8b 55 80 48 8b 55 98 be 12 06 00 00 48 c7 c7 80 24 80 82 44 89 55 90 e8 3d de fb ff 44 8b 55 90 e9 e9 f9 ff ff <0f> 0b e8 8d 2c d6 ff 48 8b 85 38 ff ff ff 48 63 db 48 8b 40 70 48 RSP: 0018:ffffc90000473c48 EFLAGS: 00010297 RAX: ffff88811c07b400 RBX: ffff88810d7b2000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc90000473d48 R08: ffffc90000473ce8 R09: 0000000000004000 R10: ffff88810db7a800 R11: 2073662d34545845 R12: 0000000000000001 R13: ffff88811c07b400 R14: 0000000000000002 R15: ffff88810db7a800 FS: 00007f0e473736c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0e47351f98 CR3: 000000011a488000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400