ci2 starts bisection 2025-07-29 14:16:55.074169888 +0000 UTC m=+31246.754883824 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: 04dd49b9e3259bfa5e4ac91fd38730ca36ad8d923b3d750a647bd6efc4468f4c all runs: 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 [ubsan kasan locking atomic_sleep hang memleak], 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: 591fa609cfe9f2386fb503d1b0f053ef98f526d8f7a104f09d3786aacdbd17d4 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_writepages run #8: crashed: kernel BUG in ext4_write_inline_data run #9: 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 [atomic_sleep hang memleak ubsan kasan locking], 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 [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: 31582c5fb35ead6e5a00f8b9536b4a1262515ca43514814e87e20bd89950b7f6 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 [ubsan kasan locking atomic_sleep hang memleak], 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: b0659bee3c0128f013510b350dd151f8387c850601302d3e3002aaa48d0e4ed8 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 3/5 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: 8c750d4b179a1dc9573299825dec6e6f3c2cf5f63d4f3a2f96997af513c5af13 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: OK run #6: OK 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 4/5 disabling configs for [ubsan kasan locking atomic_sleep hang memleak], 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: e12336fb4bd2da3851cae1b8e379c60bfc13b4d9b0047bc5ab4f5736374afeee 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 5/5 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 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 [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing current HEAD f32b52534f1d4df1fc1a6afe6cf4639adebf8a63 testing commit f32b52534f1d4df1fc1a6afe6cf4639adebf8a63 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6fc0a84efbbc84a711121192f6c90748e84edf81c2cd9b52f59ce4394996ba8b run #0: crashed: kernel BUG in ext4_write_inline_data run #1: crashed: kernel BUG in ext4_write_inline_data run #2: ignore: lost connection to test machine 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 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: 1h38m58.706767668s (build: 24m32.581831423s, test: 1h11m59.933697732s) 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: 1 PID: 2017 Comm: syz.2.327 Tainted: G W 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:ext4_write_inline_data+0xfd/0x100 fs/ext4/inline.c:236 Code: 4c 01 f7 e8 75 f5 9f 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:ffffc90002b93bc8 EFLAGS: 00010216 RAX: 0000000000001006 RBX: 0000000000001000 RCX: 0000000000001000 RDX: 000000000000003c RSI: ffff8881159b3000 RDI: ffff88811c04a6f8 RBP: ffffc90002b93bf8 R08: 0000000000000006 R09: ffffc90002b93c28 R10: 0000000000000000 R11: ffff88811c04a6f8 R12: ffff88811c04a6f8 R13: 0000000000000006 R14: 0000000000000006 R15: 0000000000001000 FS: 00007f18458d26c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e718dd000 CR3: 000000011026e000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_write_inline_data_end+0x114/0x490 fs/ext4/inline.c:791 ext4_da_write_end+0x1d6/0x2c0 fs/ext4/inode.c:3092 generic_perform_write+0xfc/0x250 mm/filemap.c:3880 ext4_buffered_write_iter+0x9f/0x160 fs/ext4/file.c:270 ext4_file_write_iter+0x5b/0x690 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: 0033:0x7f1845e61969 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:00007f18458d2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1846088fa0 RCX: 00007f1845e61969 RDX: 0000000000001006 RSI: 0000200000006c00 RDI: 0000000000000004 RBP: 00007f1845ee3ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f1846088fa0 R15: 00007ffd8b6a48c8 Modules linked in: ---[ end trace 9a5aba65964b6da1 ]--- RIP: 0010:ext4_write_inline_data+0xfd/0x100 fs/ext4/inline.c:236 Code: 4c 01 f7 e8 75 f5 9f 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:ffffc90002b93bc8 EFLAGS: 00010216 RAX: 0000000000001006 RBX: 0000000000001000 RCX: 0000000000001000 RDX: 000000000000003c RSI: ffff8881159b3000 RDI: ffff88811c04a6f8 RBP: ffffc90002b93bf8 R08: 0000000000000006 R09: ffffc90002b93c28 R10: 0000000000000000 R11: ffff88811c04a6f8 R12: ffff88811c04a6f8 R13: 0000000000000006 R14: 0000000000000006 R15: 0000000000001000 FS: 00007f18458d26c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e718dd000 CR3: 000000011026e000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400