ci2 starts bisection 2023-12-29 21:11:00.954773267 +0000 UTC m=+624064.278658828
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: bc2fa52c9c8185c00e8b57a8b6dee440fb9b37b48b5501348d23368e0d0497da
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: 25de64761bde706385676f126db0558b1ff5817b70180615c725c9204cd86a9d
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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], 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
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], 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: 678b9ba5e89aada8c671c3852dfb7ada09cd4be832724665d8f8c5e47908f2fb
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
disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], 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: 63dd61054c6761f5a586a5575325affe71823772059bc974090c96f9511319e1
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: OK
run #8: crashed: kernel BUG in ext4_split_extent_at
run #9: OK
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], 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: 633756641daa6d2425d48a793934bf5677c6fc8a0b679ee0b6288e49f02b958a
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: OK
run #9: OK
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], 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: 57bf43eacf86700b48d763e26c3908c2d57962216388119a8a54cdbd7143354e
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: OK
run #8: OK
run #9: OK
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
the chunk can be dropped
testing without sub-chunk 5/5
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
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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing current HEAD 28e3f5851a993d680ac5a14fd70cce739e78375d
testing commit 28e3f5851a993d680ac5a14fd70cce739e78375d gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 712ebc534379d05b8dbd46bc0cb20090844b66b86581feaca78d7aff807c6dff
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: OK
representative crash: kernel BUG in ext4_split_extent_at, types: [BUG]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 1h8m16.081222989s (build: 19m25.238048915s, test: 47m5.491707141s)
crash still not fixed or there were kernel test errors
commit msg: Revert "HID: core: store the unique system identifier in hid_device"
crash: kernel BUG in ext4_split_extent_at
------------[ cut here ]------------
kernel BUG at fs/ext4/extents.c:3204!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 1836 Comm: syz-executor.2 Not tainted 5.15.141-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:ext4_split_extent_at+0x3cf/0x4e0 fs/ext4/extents.c:3204
Code: ea 0c 00 00 48 c7 c7 40 ca 7f 82 66 41 89 45 04 41 0f b7 43 08 4c 8d 04 40 49 c1 e0 04 4d 01 d8 e8 f6 c9 ff ff e9 73 fd ff ff <0f> 0b 0f 0b 4c 89 da 4c 89 e9 4c 89 f6 4c 89 5d b0 4c 89 ff e8 f8
RSP: 0018:ffffc900030878a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff888108f49178 RDI: 0000000000000001
RBP: ffffc90003087928 R08: ffff8881146624b0 R09: 0000000000000000
R10: ffffc90003087a50 R11: ffff888114662480 R12: 0000000000000001
R13: ffff888114ea500c R14: ffff888108f49178 R15: 0000000000000001
FS:  00007f6dda56b6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f19b19c438e CR3: 000000011583d000 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/0x5b0 fs/ext4/inode.c:646
 ext4_iomap_alloc fs/ext4/inode.c:3420 [inline]
 ext4_iomap_begin+0x131/0x2c0 fs/ext4/inode.c:3470
 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: 0033:0x7f6de2dc9959
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:00007f6dda56b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f6de2ee9050 RCX: 00007f6de2dc9959
RDX: 0000000000000012 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007f6de2e25c88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6de2ee9050 R15: 00007ffd23937658
 </TASK>
Modules linked in:
---[ end trace 44af7ca67d5f68d3 ]---
RIP: 0010:ext4_split_extent_at+0x3cf/0x4e0 fs/ext4/extents.c:3204
Code: ea 0c 00 00 48 c7 c7 40 ca 7f 82 66 41 89 45 04 41 0f b7 43 08 4c 8d 04 40 49 c1 e0 04 4d 01 d8 e8 f6 c9 ff ff e9 73 fd ff ff <0f> 0b 0f 0b 4c 89 da 4c 89 e9 4c 89 f6 4c 89 5d b0 4c 89 ff e8 f8
RSP: 0018:ffffc900030878a0 EFLAGS: 00010246

RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff888108f49178 RDI: 0000000000000001
RBP: ffffc90003087928 R08: ffff8881146624b0 R09: 0000000000000000
R10: ffffc90003087a50 R11: ffff888114662480 R12: 0000000000000001
R13: ffff888114ea500c R14: ffff888108f49178 R15: 0000000000000001
FS:  00007f6dda56b6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002003f000 CR3: 000000011583d000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400