ci2 starts bisection 2023-07-16 20:40:01.283774461 +0000 UTC m=+173063.820711863
bisecting fixing commit since 19c0ed55a470d1cd766484abab04871b648560fb
building syzkaller on 058b3a5a6a945a55767811552eb7b9f4a20307f8
ensuring issue is reproducible on original commit 19c0ed55a470d1cd766484abab04871b648560fb

testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: d5e7ca56a81065e86635a2a012e55084b61ce19656640b575f70f63f407eb3b6
all runs: crashed: kernel BUG in ext4_split_extent_at
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
check whether we can drop unnecessary instrumentation
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e8498f4043140b9a8283702ac4c53876d53cc6be1164a216ad20ae0850a6a45b
all runs: crashed: kernel BUG in ext4_split_extent_at
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
the bug reproduces without the instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed
kconfig minimization: base=4920 full=6166 leaves diff=244
split chunks (needed=false): <244>
split chunk #0 of len 244 into 5 parts
testing without sub-chunk 1/5
testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e07455334839470bc6cfdd7d8dec7f0d9c9b5a928521c3673add75260e691d3b
all runs: crashed: kernel BUG in ext4_split_extent_at
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
the chunk can be dropped
testing without sub-chunk 2/5
testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5023f38f8e69a946f6b2729160c460513b181767ebdce6317d25a78fd2bd6f24
run #0: crashed: kernel BUG in ext4_split_extent_at
run #1: crashed: kernel BUG in ext4_split_extent_at
run #2: crashed: kernel BUG in ext4_split_extent_at
run #3: crashed: kernel BUG in ext4_split_extent_at
run #4: crashed: kernel BUG in ext4_split_extent_at
run #5: crashed: kernel BUG in ext4_split_extent_at
run #6: crashed: kernel BUG in ext4_split_extent_at
run #7: crashed: kernel BUG in ext4_split_extent_at
run #8: crashed: kernel BUG in ext4_split_extent_at
run #9: crashed: kernel BUG in ext4_split_extent_at
run #10: OK
run #11: crashed: kernel BUG in ext4_split_extent_at
run #12: crashed: kernel BUG in ext4_split_extent_at
run #13: OK
run #14: OK
run #15: OK
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
the chunk can be dropped
testing without sub-chunk 3/5
testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: ba8b7ded6675b57d3b90097026612f709f38ab30ffa4202281db5994ea3e0e92
run #0: crashed: kernel BUG in ext4_split_extent_at
run #1: crashed: kernel BUG in ext4_split_extent_at
run #2: crashed: kernel BUG in ext4_split_extent_at
run #3: crashed: kernel BUG in ext4_split_extent_at
run #4: crashed: kernel BUG in ext4_split_extent_at
run #5: crashed: kernel BUG in ext4_split_extent_at
run #6: crashed: kernel BUG in ext4_split_extent_at
run #7: crashed: kernel BUG in ext4_split_extent_at
run #8: crashed: kernel BUG in ext4_split_extent_at
run #9: crashed: kernel BUG in ext4_split_extent_at
run #10: crashed: kernel BUG in ext4_split_extent_at
run #11: crashed: kernel BUG in ext4_split_extent_at
run #12: crashed: kernel BUG in ext4_split_extent_at
run #13: crashed: kernel BUG in ext4_split_extent_at
run #14: crashed: kernel BUG in ext4_split_extent_at
run #15: crashed: kernel BUG in ext4_split_extent_at
run #16: crashed: kernel BUG in ext4_split_extent_at
run #17: crashed: kernel BUG in ext4_split_extent_at
run #18: OK
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
the chunk can be dropped
testing without sub-chunk 4/5
testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b012b253e30c03a1ee458606041f8500b05e71b33d883e67ecfa360546e7108e
run #0: crashed: kernel BUG in ext4_split_extent_at
run #1: crashed: kernel BUG in ext4_split_extent_at
run #2: crashed: kernel BUG in ext4_split_extent_at
run #3: crashed: kernel BUG in ext4_split_extent_at
run #4: crashed: kernel BUG in ext4_split_extent_at
run #5: crashed: kernel BUG in ext4_split_extent_at
run #6: crashed: kernel BUG in ext4_split_extent_at
run #7: crashed: kernel BUG in ext4_split_extent_at
run #8: crashed: kernel BUG in ext4_split_extent_at
run #9: crashed: kernel BUG in ext4_split_extent_at
run #10: crashed: kernel BUG in ext4_split_extent_at
run #11: crashed: kernel BUG in ext4_split_extent_at
run #12: crashed: kernel BUG in ext4_split_extent_at
run #13: crashed: kernel BUG in ext4_split_extent_at
run #14: OK
run #15: OK
run #16: OK
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
the chunk can be dropped
testing without sub-chunk 5/5
testing commit 19c0ed55a470d1cd766484abab04871b648560fb gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
failed building 19c0ed55a470d1cd766484abab04871b648560fb: net/socket.c:1172: undefined reference to `wext_handle_ioctl'
net/socket.c:3366: 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 48 configs; suspects: [HID_ZEROPLUS 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 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 X86_X32 ZEROPLUS_FF]
disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing current HEAD 879959450ec776f8dde010ed124876a4fe0bbb69
testing commit 879959450ec776f8dde010ed124876a4fe0bbb69 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 90fc74f356b9bb1010878a4c21fde706c78fe0e4e6df6edd077f6f3de985b9a6
run #0: crashed: kernel BUG in ext4_split_extent_at
run #1: crashed: kernel BUG in ext4_split_extent_at
run #2: crashed: kernel BUG in ext4_split_extent_at
run #3: crashed: kernel BUG in ext4_split_extent_at
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
crash still not fixed/happens on the oldest tested release
reproducer is flaky (1.00 repro chance estimate)
revisions tested: 7, total time: 1h24m46.321900968s (build: 35m37.147047398s, test: 47m25.27763079s)
crash still not fixed on HEAD or HEAD had kernel test errors
commit msg: Revert "gpio: Allow per-parent interrupt data"
crash: kernel BUG in ext4_split_extent_at
------------[ cut here ]------------
kernel BUG at fs/ext4/ext4_extents.h:200!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 6627 Comm: syz-executor.4 Not tainted 5.15.119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
RIP: 0010:ext4_ext_mark_unwritten fs/ext4/ext4_extents.h:200 [inline]
RIP: 0010:ext4_split_extent_at+0x3fd/0x4e0 fs/ext4/extents.c:3221
Code: 4c 89 da 4c 89 e9 4c 89 f6 4c 89 5d b0 4c 89 ff e8 18 d1 ff ff 4c 8b 5d b0 e9 27 fd ff ff f6 45 b0 07 0f 84 9c fc ff ff 0f 0b <0f> 0b 0f 0b 41 0f b7 45 04 4c 89 f7 41 0f b7 55 06 41 8b 75 00 8d
RSP: 0018:ffffc900033778a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888110aa8800
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888108e4e4e8
RBP: ffffc90003377928 R08: ffff88811517e930 R09: 0000000000000000
R10: ffffc90003377a50 R11: ffff88811517e900 R12: 0000000000000000
R13: ffff88811607200c R14: ffff888108e7a6f8 R15: 0000000000000001
FS:  00007f1ba64f26c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002003f000 CR3: 0000000114bd6000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_split_extent+0xce/0x190 fs/ext4/extents.c:3385
 ext4_split_convert_extents+0xa1/0xb0 fs/ext4/extents.c:3714
 ext4_ext_handle_unwritten_extents fs/ext4/extents.c:3876 [inline]
 ext4_ext_map_blocks+0xdb9/0x1940 fs/ext4/extents.c:4168
 ext4_map_blocks+0x19a/0x5d0 fs/ext4/inode.c:646
 ext4_iomap_alloc fs/ext4/inode.c:3430 [inline]
 ext4_iomap_begin+0x131/0x2c0 fs/ext4/inode.c:3480
 iomap_iter+0x128/0x2d0 fs/iomap/iter.c:74
 __iomap_dio_rw+0x237/0x870 fs/iomap/direct-io.c:593
 iomap_dio_rw+0x9/0x30 fs/iomap/direct-io.c:680
 ext4_dio_write_iter fs/ext4/file.c:572 [inline]
 ext4_file_write_iter+0x352/0x830 fs/ext4/file.c:683
 call_write_iter include/linux/fs.h:2159 [inline]
 new_sync_write+0x105/0x190 fs/read_write.c:507
 vfs_write+0x239/0x2e0 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
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f1baed50959
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1ba64f20c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1baee70050 RCX: 00007f1baed50959
RDX: 0000000000000012 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007f1baedacc88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f1baee70050 R15: 00007ffdb0990298
 </TASK>
Modules linked in:
---[ end trace e0e296dba274c540 ]---
RIP: 0010:ext4_ext_mark_unwritten fs/ext4/ext4_extents.h:200 [inline]
RIP: 0010:ext4_split_extent_at+0x3fd/0x4e0 fs/ext4/extents.c:3221
Code: 4c 89 da 4c 89 e9 4c 89 f6 4c 89 5d b0 4c 89 ff e8 18 d1 ff ff 4c 8b 5d b0 e9 27 fd ff ff f6 45 b0 07 0f 84 9c fc ff ff 0f 0b <0f> 0b 0f 0b 41 0f b7 45 04 4c 89 f7 41 0f b7 55 06 41 8b 75 00 8d
RSP: 0018:ffffc900033778a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888110aa8800
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888108e4e4e8
RBP: ffffc90003377928 R08: ffff88811517e930 R09: 0000000000000000
R10: ffffc90003377a50 R11: ffff88811517e900 R12: 0000000000000000
R13: ffff88811607200c R14: ffff888108e7a6f8 R15: 0000000000000001
FS:  00007f1ba64f26c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002003f000 CR3: 0000000114bd6000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400