ci2 starts bisection 2025-11-14 01:55:34.88844494 +0000 UTC m=+132811.905010274
bisecting fixing commit since 4032a894ccb2cf50824f8f9be583e515ec22be87
building syzkaller on 3d2f584ddab119da50e8a8d26765aa98d3b33c02
ensuring issue is reproducible on original commit 4032a894ccb2cf50824f8f9be583e515ec22be87

testing commit 4032a894ccb2cf50824f8f9be583e515ec22be87 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1ccee7cd5965c29dfb1fcfc78162703f57506f48ef146ae4e8512970ed22e522
run #0: crashed: kernel BUG in ext4_write_inline_data
run #1: crashed: kernel BUG in ext4_write_inline_data
run #2: crashed: kernel BUG in ext4_write_inline_data
run #3: crashed: kernel BUG in ext4_write_inline_data
run #4: crashed: kernel BUG in ext4_write_inline_data
run #5: crashed: kernel BUG in ext4_write_inline_data
run #6: crashed: kernel BUG in ext4_write_inline_data
run #7: crashed: kernel BUG in ext4_write_inline_data
run #8: crashed: kernel BUG in ext4_write_inline_data
run #9: crashed: kernel BUG in ext4_write_inline_data
run #10: crashed: kernel BUG in ext4_write_inline_data
run #11: crashed: kernel BUG in ext4_write_inline_data
run #12: crashed: kernel BUG in ext4_writepages
run #13: crashed: kernel BUG in ext4_write_inline_data
run #14: crashed: kernel BUG in ext4_write_inline_data
run #15: crashed: kernel BUG in ext4_write_inline_data
run #16: crashed: kernel BUG in ext4_write_inline_data
run #17: crashed: kernel BUG in ext4_write_inline_data
run #18: crashed: kernel BUG in ext4_write_inline_data
run #19: crashed: kernel BUG in ext4_write_inline_data
representative crash: kernel BUG in ext4_write_inline_data, types: [BUG]
check whether we can drop unnecessary instrumentation
disabling configs for [memleak ubsan kasan locking atomic_sleep hang], they are not needed
testing commit 4032a894ccb2cf50824f8f9be583e515ec22be87 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9b57bb5e12dd01013852903d21a0b098170e13620d5948552efbcb70d69e6ca0
all runs: crashed: kernel BUG in ext4_write_inline_data
representative crash: kernel BUG in ext4_write_inline_data, types: [BUG]
the bug reproduces without the instrumentation
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
kconfig minimization: base=4921 full=6218 leaves diff=253
split chunks (needed=false): <253>
split chunk #0 of len 253 into 5 parts
testing without sub-chunk 1/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 4032a894ccb2cf50824f8f9be583e515ec22be87 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5d8fc0a8787819fe51bb39160f1452b371599473df5d8f1f690d113b9ce1a951
all runs: crashed: kernel BUG in ext4_write_inline_data
representative crash: kernel BUG in ext4_write_inline_data, types: [BUG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed
testing commit 4032a894ccb2cf50824f8f9be583e515ec22be87 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a87f4ee0883accfd0af20efda7ccf08c2fdaea4c94f267dedc5e318dc085a4f9
run #0: crashed: kernel BUG in ext4_write_inline_data
run #1: crashed: kernel BUG in ext4_write_inline_data
run #2: crashed: kernel BUG in ext4_write_inline_data
run #3: crashed: kernel BUG in ext4_write_inline_data
run #4: crashed: kernel BUG in ext4_write_inline_data
run #5: crashed: kernel BUG in ext4_write_inline_data
run #6: crashed: kernel BUG in ext4_write_inline_data
run #7: crashed: kernel BUG in ext4_write_inline_data
run #8: crashed: kernel BUG in ext4_write_inline_data
run #9: OK
representative crash: kernel BUG in ext4_write_inline_data, types: [BUG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 4032a894ccb2cf50824f8f9be583e515ec22be87 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a113729e0ada7f33a09ba78e62886efc93b174d4bf0d57105a373044f112b81e
run #0: crashed: kernel BUG in ext4_write_inline_data
run #1: crashed: kernel BUG in ext4_write_inline_data
run #2: crashed: kernel BUG in ext4_write_inline_data
run #3: crashed: kernel BUG in ext4_write_inline_data
run #4: crashed: kernel BUG in ext4_write_inline_data
run #5: crashed: kernel BUG in ext4_write_inline_data
run #6: crashed: kernel BUG in ext4_write_inline_data
run #7: crashed: kernel BUG in ext4_write_inline_data
run #8: crashed: kernel BUG in ext4_write_inline_data
run #9: OK
representative crash: kernel BUG in ext4_write_inline_data, types: [BUG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing commit 4032a894ccb2cf50824f8f9be583e515ec22be87 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9b4fe5741f693842dbd8fb3fc590e6c460c44c04dbf958754b0fe728b8b011d2
run #0: crashed: kernel BUG in ext4_write_inline_data
run #1: crashed: kernel BUG in ext4_write_inline_data
run #2: crashed: kernel BUG in ext4_write_inline_data
run #3: crashed: kernel BUG in ext4_write_inline_data
run #4: crashed: kernel BUG in ext4_write_inline_data
run #5: crashed: kernel BUG in ext4_write_inline_data
run #6: crashed: kernel BUG in ext4_write_inline_data
run #7: OK
run #8: OK
run #9: OK
representative crash: kernel BUG in ext4_write_inline_data, types: [BUG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [memleak ubsan kasan locking atomic_sleep hang], they are not needed
testing commit 4032a894ccb2cf50824f8f9be583e515ec22be87 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
failed building 4032a894ccb2cf50824f8f9be583e515ec22be87: 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 49 configs; suspects: [HID_ZEROPLUS 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 8a8f52308945f4b0f1a168fa91bd7de0a76e59c4
testing commit 8a8f52308945f4b0f1a168fa91bd7de0a76e59c4 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6c7a8be3d3b0317738bb74fbde6bead34784dc452d82c2d66be045e40dc7b503
run #0: crashed: kernel BUG in ext4_write_inline_data
run #1: crashed: kernel BUG in ext4_write_inline_data
run #2: crashed: kernel BUG in ext4_write_inline_data
run #3: crashed: kernel BUG in ext4_write_inline_data
run #4: crashed: kernel BUG in ext4_write_inline_data
run #5: crashed: kernel BUG in ext4_write_inline_data
run #6: crashed: kernel BUG in ext4_write_inline_data
run #7: crashed: kernel BUG in ext4_write_inline_data
run #8: crashed: kernel BUG in ext4_write_inline_data
run #9: crashed: kernel BUG in ext4_writepages
representative crash: kernel BUG in ext4_write_inline_data, types: [BUG]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 1h49m22.105573387s (build: 18m0.151110668s, test: 1h28m47.141827529s)
crash still not fixed or there were kernel test errors
commit msg: Merge android13-5.15 into android13-5.15-lts
crash: kernel BUG in ext4_write_inline_data
loop2: detected capacity change from 0 to 1024
------------[ cut here ]------------
kernel BUG at fs/ext4/inline.c:236!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 0 PID: 1426 Comm: syz.2.211 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:ext4_write_inline_data+0xfd/0x100 fs/ext4/inline.c:236
Code: 4c 01 f7 e8 b5 a7 a0 00 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 45 8d 6c 08 c4 41 bf 3c 00 00 00 41 29 cf eb 84 0f 0b c3 <0f> 0b 90 41 89 f1 89 d6 45 85 c9 74 35 49 63 c9 48 01 f9 0f b7 57
RSP: 0018:ffffc90001d7fbc8 EFLAGS: 00010216
RAX: 0000000000001006 RBX: 0000000000001000 RCX: 0000000000001000
RDX: 000000000000003c RSI: ffff88811bab7000 RDI: ffff88811ac5a6f8
RBP: ffffc90001d7fbf8 R08: 0000000000000006 R09: ffffc90001d7fc28
R10: 0000000000000000 R11: ffff88811ac5a6f8 R12: ffff88811ac5a6f8
R13: 0000000000000006 R14: 0000000000000006 R15: 0000000000001000
FS:  00007fb57785c6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb57783bd58 CR3: 0000000111e0c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_write_inline_data_end+0x114/0x490 fs/ext4/inline.c:799
 ext4_da_write_end+0x1d6/0x2c0 fs/ext4/inode.c:3092
 generic_perform_write+0xfc/0x250 mm/filemap.c:3881
 ext4_buffered_write_iter+0x9f/0x160 fs/ext4/file.c:270
 ext4_file_write_iter+0x5b/0x670 fs/ext4/file.c:664
 call_write_iter include/linux/fs.h:2212 [inline]
 new_sync_write+0x105/0x190 fs/read_write.c:507
 vfs_write+0x23c/0x2e0 fs/read_write.c:594
 ksys_write+0x62/0xe0 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __x64_sys_write+0x15/0x20 fs/read_write.c:656
 x64_sys_call+0x97b/0x990 arch/x86/include/generated/asm/syscalls_64.h:2
 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: 0033:0x7fb577deb969
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:00007fb57785c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb578012fa0 RCX: 00007fb577deb969
RDX: 0000000000001006 RSI: 0000200000006c00 RDI: 0000000000000004
RBP: 00007fb577e6dab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb578012fa0 R15: 00007ffeb8007bc8
 </TASK>
Modules linked in:
---[ end trace e2fd8a17048cb805 ]---
RIP: 0010:ext4_write_inline_data+0xfd/0x100 fs/ext4/inline.c:236
Code: 4c 01 f7 e8 b5 a7 a0 00 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 45 8d 6c 08 c4 41 bf 3c 00 00 00 41 29 cf eb 84 0f 0b c3 <0f> 0b 90 41 89 f1 89 d6 45 85 c9 74 35 49 63 c9 48 01 f9 0f b7 57
RSP: 0018:ffffc90001d7fbc8 EFLAGS: 00010216
RAX: 0000000000001006 RBX: 0000000000001000 RCX: 0000000000001000
RDX: 000000000000003c RSI: ffff88811bab7000 RDI: ffff88811ac5a6f8
RBP: ffffc90001d7fbf8 R08: 0000000000000006 R09: ffffc90001d7fc28
R10: 0000000000000000 R11: ffff88811ac5a6f8 R12: ffff88811ac5a6f8
R13: 0000000000000006 R14: 0000000000000006 R15: 0000000000001000
FS:  00007fb57785c6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb57783bd58 CR3: 0000000111e0c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400