ci2 starts bisection 2024-01-20 14:50:25.330278672 +0000 UTC m=+85926.865715301
bisecting fixing commit since f73aafc29bee0c1674374fd22e8f90f95c91ed3f
building syzkaller on 058b3a5a6a945a55767811552eb7b9f4a20307f8
ensuring issue is reproducible on original commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f

testing commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 19ac6f0b8fa5568f39d9344982f297f0f156e1d8ecbcbb02bd46964e66a9f2ed
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 [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed
testing commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: bdaca2422ae2010262398f2399005cef03ffd922e46de59e7c73c38521a203db
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=5179 full=6523 leaves diff=250
split chunks (needed=false): <250>
split chunk #0 of len 250 into 5 parts
testing without sub-chunk 1/5
disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: f7d5bf60847a3e0a8c61f094b2fc2231a433e70caf12befa06d96cf46411048a
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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 049aa0e6f3e5b12f148ee9d76439dfe8587f78d9438a18db2c50dbff67201c8e
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 f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 2396299204b916a6c29d0458ff0a85308c7310f4e8038bd3a195f870fd7b87d0
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: 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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 788e7ade40ce2e1ccf2ec0a586a5bf972391029e99441a6582bb4debfc34a498
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 5/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed
testing commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
failed building f73aafc29bee0c1674374fd22e8f90f95c91ed3f: net/socket.c:1225: undefined reference to `wext_handle_ioctl'
net/socket.c:3420: undefined reference to `compat_wext_handle_ioctl'
net/core/net-procfs.c:329: undefined reference to `wext_proc_init'
net/core/net-procfs.c:345: undefined reference to `wext_proc_exit'
minimized to 50 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_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_PURELIFI WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_SILABS WLAN_VENDOR_ZYDAS X86_X32_ABI ZEROPLUS_FF]
disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing current HEAD aba5a3fe094e43a7aa8adc5c09a131ef8c9ccfde
testing commit aba5a3fe094e43a7aa8adc5c09a131ef8c9ccfde gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b243c3f81019fa3f7ca9a95f3db3cd4e5b6fc8cb98c842f635a62eb3470850d3
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: 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: 1h34m20.98573965s (build: 24m45.96469349s, test: 1h6m57.594399799s)
crash still not fixed or there were kernel test errors
commit msg: ANDROID: Enable CONFIG_LAZY_RCU in x86 gki_defconfig
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: 5168 Comm: syz-executor.5 Not tainted 6.1.57-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:ext4_ext_mark_unwritten fs/ext4/ext4_extents.h:200 [inline]
RIP: 0010:ext4_split_extent_at+0x657/0x660 fs/ext4/extents.c:3222
Code: ff b3 01 e9 83 fa ff ff 0f 0b e9 ad fb ff ff 0f 0b e9 5d fc ff ff 0f 0b e9 d9 fe ff ff 0f 0b 0f 0b 0f 0b e8 fb 88 ae 00 0f 0b <0f> 0b 0f 0b 0f 1f 44 00 00 55 48 89 e5 0f b7 46 04 8d 88 00 80 ff
RSP: 0018:ffffc90003e3b850 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88810d5fd668 RCX: 0000000000000000
RDX: ffff888116cbb898 RSI: 0000000000000000 RDI: ffff8881183a500c
RBP: ffffc90003e3b910 R08: ffff88810d5d9548 R09: 000000000000003b
R10: 0000000000000010 R11: ffff888116cbb840 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88810d5fd668
FS:  00007fb9ba3966c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002003f000 CR3: 00000001187d6000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_split_extent+0x136/0x180 fs/ext4/extents.c:3385
 ext4_split_convert_extents fs/ext4/extents.c:3714 [inline]
 ext4_ext_handle_unwritten_extents fs/ext4/extents.c:3876 [inline]
 ext4_ext_map_blocks+0x9c8/0x1d30 fs/ext4/extents.c:4168
 ext4_map_blocks+0x2eb/0x660 fs/ext4/inode.c:651
 ext4_iomap_alloc fs/ext4/inode.c:3415 [inline]
 ext4_iomap_begin+0x22d/0x2f0 fs/ext4/inode.c:3465
 iomap_iter+0x1e5/0x350 fs/iomap/iter.c:74
 __iomap_dio_rw+0x40a/0x7e0 fs/iomap/direct-io.c:601
 iomap_dio_rw+0xc/0x40 fs/iomap/direct-io.c:690
 ext4_dio_write_iter fs/ext4/file.c:587 [inline]
 ext4_file_write_iter+0x4b6/0x7e0 fs/ext4/file.c:698
 call_write_iter include/linux/fs.h:2215 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x331/0x3f0 fs/read_write.c:584
 ksys_write+0x6c/0xd0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x16/0x20 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb9b967c959
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:00007fb9ba3960c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb9b979c050 RCX: 00007fb9b967c959
RDX: 0000000000000012 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007fb9b96d8c88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb9b979c050 R15: 00007ffdff738d98
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_ext_mark_unwritten fs/ext4/ext4_extents.h:200 [inline]
RIP: 0010:ext4_split_extent_at+0x657/0x660 fs/ext4/extents.c:3222
Code: ff b3 01 e9 83 fa ff ff 0f 0b e9 ad fb ff ff 0f 0b e9 5d fc ff ff 0f 0b e9 d9 fe ff ff 0f 0b 0f 0b 0f 0b e8 fb 88 ae 00 0f 0b <0f> 0b 0f 0b 0f 1f 44 00 00 55 48 89 e5 0f b7 46 04 8d 88 00 80 ff
RSP: 0018:ffffc90003e3b850 EFLAGS: 00010246

RAX: 0000000000000000 RBX: ffff88810d5fd668 RCX: 0000000000000000
RDX: ffff888116cbb898 RSI: 0000000000000000 RDI: ffff8881183a500c
RBP: ffffc90003e3b910 R08: ffff88810d5d9548 R09: 000000000000003b
R10: 0000000000000010 R11: ffff888116cbb840 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88810d5fd668
FS:  00007fb9ba3966c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9038f0638e CR3: 00000001187d6000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400