ci2 starts bisection 2023-11-27 15:29:17.527566531 +0000 UTC m=+90.596168700
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: 9521a98d050eb9014849b1b255d0fa290bb27708fa1707680bdafe1e3726935b
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: 4232979d321d4e513fa5bc5bc9b12d3a14ec417bc414344de15ae293cebfdaf4
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 [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], 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: 1b4b8f54ab5595cc80d9f12a22721ee116f70664f14f2fee64b7c2b38dfbb9f5
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: 09689cbea4e70f87b2a958d08f2626729e38f752747e00a2603a72c1b201404d
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: OK
run #6: OK
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 3/5
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: 81ec8c37b6ead5d30e2cf09bf200c89f5adf8b1586edf8cd2d6bdead5eaf5fbb
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 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: 89be8f3ec5914c8f854c2bf34456acc81e37637aad35de8e750be5d1b3f48b39
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: 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 5/5
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
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 [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing current HEAD 61cfd264993d07540f60a5c53d77a14c818e54a9
testing commit 61cfd264993d07540f60a5c53d77a14c818e54a9 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: d4c11d21b078439a2b942afab21d6c880078c31d7826fa9576e6f12e3bb2ecc0
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: OK
run #6: OK
run #7: OK
run #8: OK
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: 1h23m44.90415339s (build: 13m33.357937767s, test: 45m57.576060202s)
crash still not fixed or there were kernel test errors
commit msg: Revert "ipv4/fib: send notify when delete source address routes"
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: 0 PID: 1360 Comm: syz-executor.2 Not tainted 5.15.137-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:ext4_split_extent_at+0x3cf/0x4e0 fs/ext4/extents.c:3204
Code: ea 0c 00 00 48 c7 c7 40 c2 7f 82 66 41 89 45 04 41 0f b7 43 08 4c 8d 04 40 49 c1 e0 04 4d 01 d8 e8 e6 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 e8
RSP: 0018:ffffc9000236b8a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88810ac52198 RDI: 0000000000000001
RBP: ffffc9000236b928 R08: ffff8881148054b0 R09: 0000000000000000
R10: ffffc9000236ba50 R11: ffff888114805480 R12: 0000000000000001
R13: ffff88811468003c R14: ffff88810ac52198 R15: 0000000000000001
FS:  00007f602c49b6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffecc84ebc8 CR3: 0000000114d70000 CR4: 00000000003506b0
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: 0033:0x7f6034cf9959
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:00007f602c49b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f6034e19050 RCX: 00007f6034cf9959
RDX: 0000000000000012 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007f6034d55c88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6034e19050 R15: 00007ffc508cddd8
 </TASK>
Modules linked in:
---[ end trace 6653d04e58c00aaa ]---
RIP: 0010:ext4_split_extent_at+0x3cf/0x4e0 fs/ext4/extents.c:3204
Code: ea 0c 00 00 48 c7 c7 40 c2 7f 82 66 41 89 45 04 41 0f b7 43 08 4c 8d 04 40 49 c1 e0 04 4d 01 d8 e8 e6 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 e8
RSP: 0018:ffffc9000236b8a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88810ac52198 RDI: 0000000000000001
RBP: ffffc9000236b928 R08: ffff8881148054b0 R09: 0000000000000000
R10: ffffc9000236ba50 R11: ffff888114805480 R12: 0000000000000001
R13: ffff88811468003c R14: ffff88810ac52198 R15: 0000000000000001
FS:  00007f602c49b6c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002003f000 CR3: 0000000114d70000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400