ci2 starts bisection 2023-11-20 17:46:23.729490895 +0000 UTC m=+603050.837521648
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: 92d0caff73eb5c22a41d76223aff1332c51d97675fa7f129053f8996d5ae3bfa
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 [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
kernel signature: eb1fee1cac01ee4bddde2101f21f80ea2bdb2e0fe936229919cd17863c460c14
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 [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], 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 [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
kernel signature: 25aa2be49fd9923ada50edc0da60d8f0344aeb915b20659ed1ef1501cf80b353
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 [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: 9c6267b531a4c18e674bc54ba9c8a0a4cefc55c974892aae5f5f276b8014a30b
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 [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], 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: ec8169ac948e998651caabf5b6dc7335bc67a11f93fce05ad425a3384281fc3f
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]
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 f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 58847e3fc29c17e1dfd47ab2f5a948ec155f39f98f50ef019da0c5e23e651ad6
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 [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
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 [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed
testing current HEAD daa7a3d95d3992597ffc11035782e1a44264ad4a
testing commit daa7a3d95d3992597ffc11035782e1a44264ad4a gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 31b29441e7fedc1b758b2dd0b1f05a95fe4ec260bf2fe600c4ff0be1299d1834
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: 1h39m3.848142946s (build: 25m50.490327841s, test: 1h8m59.959925855s)
crash still not fixed or there were kernel test errors
commit msg: ANDROID: KVM: arm64: mount procfs for pKVM module loading
crash: kernel BUG in ext4_split_extent_at
------------[ cut here ]------------
kernel BUG at fs/ext4/extents.c:3205!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 0 PID: 3709 Comm: syz-executor.5 Not tainted 6.1.43-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:ext4_split_extent_at+0x64c/0x660 fs/ext4/extents.c:3205
Code: 7a 00 00 00 41 89 c7 e9 67 ff ff 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 bb 1c ae 00 0f 0b 0f 0b 0f 0b 0f 1f 44 00 00 55 48
RSP: 0018:ffffc9000198b850 EFLAGS: 00010202

RAX: 0000000000000030 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffffc9000198ba60 RSI: ffff8881195f500c RDI: ffff8881195f500c
RBP: ffffc9000198b910 R08: 0000000000000000 R09: 000000000000003b
R10: 0000000000000010 R11: ffff8881198c1b40 R12: 0000000000000010
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88810d02e628
FS:  00007f1840d606c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556554818 CR3: 0000000119965000 CR4: 00000000003506b0
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: 0033:0x7f184007c959
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:00007f1840d600c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f184019c050 RCX: 00007f184007c959
RDX: 0000000000000012 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007f18400d8c88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f184019c050 R15: 00007ffd39c55fe8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_split_extent_at+0x64c/0x660 fs/ext4/extents.c:3205
Code: 7a 00 00 00 41 89 c7 e9 67 ff ff 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 bb 1c ae 00 0f 0b 0f 0b 0f 0b 0f 1f 44 00 00 55 48
RSP: 0018:ffffc9000198b850 EFLAGS: 00010202
RAX: 0000000000000030 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffffc9000198ba60 RSI: ffff8881195f500c RDI: ffff8881195f500c
RBP: ffffc9000198b910 R08: 0000000000000000 R09: 000000000000003b
R10: 0000000000000010 R11: ffff8881198c1b40 R12: 0000000000000010
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88810d02e628
FS:  00007f1840d606c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb3489a6d58 CR3: 0000000119965000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400