ci2 starts bisection 2025-04-06 20:38:25.159325962 +0000 UTC m=+90867.008444430
bisecting fixing commit since 7b148974607906d1e0bb0b276deb3fb6def47432
building syzkaller on a4ae4f428721da42ac15f07d6f3b54584dedee27
ensuring issue is reproducible on original commit 7b148974607906d1e0bb0b276deb3fb6def47432

testing commit 7b148974607906d1e0bb0b276deb3fb6def47432 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: f59430abaf9b8eac30c273ec5be53f22631b99634892682246f908d69d5f6b7d
run #0: crashed: kernel BUG in ext4_writepages
run #1: crashed: kernel BUG in ext4_writepages
run #2: crashed: kernel BUG in __ext4_journal_stop
run #3: crashed: kernel BUG in __ext4_journal_stop
run #4: crashed: kernel BUG in __ext4_journal_stop
run #5: crashed: kernel BUG in ext4_writepages
run #6: crashed: kernel BUG in __ext4_journal_stop
run #7: crashed: kernel BUG in ext4_writepages
run #8: crashed: kernel BUG in ext4_writepages
run #9: crashed: kernel BUG in __ext4_journal_stop
run #10: crashed: kernel BUG in __ext4_journal_stop
run #11: crashed: kernel BUG in ext4_writepages
run #12: crashed: kernel BUG in ext4_writepages
run #13: crashed: kernel BUG in __ext4_journal_stop
run #14: crashed: kernel BUG in ext4_writepages
run #15: crashed: kernel BUG in ext4_writepages
run #16: crashed: kernel BUG in ext4_writepages
run #17: crashed: kernel BUG in __ext4_journal_stop
run #18: crashed: kernel BUG in __ext4_journal_stop
run #19: crashed: kernel BUG in __ext4_journal_stop
representative crash: kernel BUG in ext4_writepages, types: [BUG]
check whether we can drop unnecessary instrumentation
disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 7b148974607906d1e0bb0b276deb3fb6def47432 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 4ca4bf655ce4c4f22f40251b590595730af5b7eba259a9cb9affe227da622079
run #0: crashed: kernel BUG in __ext4_journal_stop
run #1: crashed: kernel BUG in ext4_writepages
run #2: crashed: kernel BUG in ext4_writepages
run #3: crashed: kernel BUG in ext4_writepages
run #4: crashed: kernel BUG in __ext4_journal_stop
run #5: crashed: kernel BUG in ext4_writepages
run #6: crashed: kernel BUG in __ext4_journal_stop
run #7: crashed: kernel BUG in __ext4_journal_stop
run #8: crashed: kernel BUG in ext4_writepages
run #9: crashed: kernel BUG in __ext4_journal_stop
representative crash: kernel BUG in __ext4_journal_stop, 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=5179 full=6520 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 [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed
testing commit 7b148974607906d1e0bb0b276deb3fb6def47432 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 81f3bb31dabc609072e3b7377e9307a26066d88fb90ed283fa6e0878a07450a3
run #0: crashed: kernel BUG in __ext4_journal_stop
run #1: crashed: kernel BUG in ext4_writepages
run #2: crashed: kernel BUG in ext4_writepages
run #3: crashed: kernel BUG in __ext4_journal_stop
run #4: crashed: kernel BUG in __ext4_journal_stop
run #5: crashed: kernel BUG in ext4_writepages
run #6: crashed: kernel BUG in __ext4_journal_stop
run #7: crashed: kernel BUG in ext4_writepages
run #8: crashed: kernel BUG in ext4_writepages
run #9: crashed: kernel BUG in ext4_writepages
representative crash: kernel BUG in __ext4_journal_stop, types: [BUG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed
testing commit 7b148974607906d1e0bb0b276deb3fb6def47432 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5315cd6e4a910edd279e3a748cdb386a41f425f7e7752ed2bf4af32fe492bf7a
run #0: crashed: kernel BUG in __ext4_journal_stop
run #1: crashed: kernel BUG in __ext4_journal_stop
run #2: crashed: kernel BUG in __ext4_journal_stop
run #3: crashed: kernel BUG in __ext4_journal_stop
run #4: crashed: kernel BUG in __ext4_journal_stop
run #5: crashed: kernel BUG in ext4_writepages
run #6: crashed: kernel BUG in ext4_writepages
run #7: crashed: kernel BUG in __ext4_journal_stop
run #8: crashed: kernel BUG in __ext4_journal_stop
run #9: crashed: kernel BUG in __ext4_journal_stop
representative crash: kernel BUG in __ext4_journal_stop, 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 7b148974607906d1e0bb0b276deb3fb6def47432 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 125c74e413c28c980cf53746d5a903b2a7d56ce14a91044bca3d763a6dbb990d
run #0: crashed: kernel BUG in __ext4_journal_stop
run #1: crashed: kernel BUG in __ext4_journal_stop
run #2: crashed: kernel BUG in __ext4_journal_stop
run #3: crashed: kernel BUG in __ext4_journal_stop
run #4: crashed: kernel BUG in __ext4_journal_stop
run #5: crashed: kernel BUG in __ext4_journal_stop
run #6: crashed: kernel BUG in __ext4_journal_stop
run #7: crashed: kernel BUG in ext4_writepages
run #8: crashed: kernel BUG in ext4_writepages
run #9: crashed: kernel BUG in ext4_writepages
representative crash: kernel BUG in __ext4_journal_stop, types: [BUG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed
testing commit 7b148974607906d1e0bb0b276deb3fb6def47432 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: abf824acac8bc6d8feebb639a0a0402df4f4632d87ad90303f0a1cdeccf97601
run #0: crashed: kernel BUG in __ext4_journal_stop
run #1: crashed: kernel BUG in __ext4_journal_stop
run #2: crashed: kernel BUG in __ext4_journal_stop
run #3: crashed: kernel BUG in ext4_writepages
run #4: crashed: kernel BUG in ext4_writepages
run #5: crashed: kernel BUG in ext4_writepages
run #6: crashed: kernel BUG in __ext4_journal_stop
run #7: crashed: kernel BUG in ext4_writepages
run #8: crashed: kernel BUG in __ext4_journal_stop
run #9: crashed: kernel BUG in ext4_writepages
representative crash: kernel BUG in __ext4_journal_stop, 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 7b148974607906d1e0bb0b276deb3fb6def47432 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
failed building 7b148974607906d1e0bb0b276deb3fb6def47432: 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 ca24c52e3c25966dfb7d4f0784910cd661b44d43
testing commit ca24c52e3c25966dfb7d4f0784910cd661b44d43 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 027db5d951bc47e603943d857d439aafdb33e486b1f1dc2b3268499e4bb43a8a
run #0: crashed: kernel BUG in ext4_writepages
run #1: crashed: kernel BUG in __ext4_journal_stop
run #2: crashed: kernel BUG in __ext4_journal_stop
run #3: crashed: kernel BUG in ext4_writepages
run #4: crashed: kernel BUG in ext4_writepages
run #5: crashed: kernel BUG in __ext4_journal_stop
run #6: crashed: kernel BUG in __ext4_journal_stop
run #7: crashed: kernel BUG in __ext4_journal_stop
run #8: crashed: kernel BUG in __ext4_journal_stop
run #9: crashed: kernel BUG in __ext4_journal_stop
representative crash: kernel BUG in ext4_writepages, types: [BUG]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 1h9m43.596754373s (build: 35m34.905128756s, test: 27m2.480324267s)
crash still not fixed or there were kernel test errors
commit msg: Revert "ANDROID: usb: Optimization the transfer rate of accessory mode in USB3.2 mode"
crash: kernel BUG in ext4_writepages
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2760!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 0 PID: 312 Comm: kworker/u4:3 Not tainted 6.1.129-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:ext4_writepages+0x110a/0x1110 fs/ext4/inode.c:2759
Code: fe ff ff 89 d9 e8 46 3a 02 00 65 ff 0d e7 e2 b3 7e 4c 8b b5 a8 fe ff ff 0f 85 6e fe ff ff e8 85 6c b2 ff e9 64 fe ff ff 0f 0b <0f> 0b 0f 1f 40 00 55 48 89 e5 48 83 7e 28 00 74 0c f0 80 4e 01 04
RSP: 0000:ffffc900006e3920 EFLAGS: 00010207
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000ac2 RDI: 0000000000000000
RBP: ffffc900006e3af8 R08: 0000000000000000 R09: ffffffff814dbc46
R10: 0000000000000080 R11: 0000000000000ac2 R12: ffffc900006e3c48
R13: ffffc900006e3b08 R14: ffff888115bdc000 R15: ffff88810d18d128
FS:  0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000141 CR3: 000000010caec000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0xcc/0x210 mm/page-writeback.c:2494
 __writeback_single_inode+0x43/0x350 fs/fs-writeback.c:1612
 writeback_sb_inodes+0x3e2/0x6f0 fs/fs-writeback.c:1903
 wb_writeback+0x15d/0x380 fs/fs-writeback.c:2079
 wb_do_writeback fs/fs-writeback.c:2226 [inline]
 wb_workfn+0x106/0x4b0 fs/fs-writeback.c:2266
 process_one_work+0x1c5/0x380 kernel/workqueue.c:2299
 worker_thread+0x249/0x400 kernel/workqueue.c:2446
 kthread+0xe6/0x100 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_writepages+0x110a/0x1110 fs/ext4/inode.c:2759
Code: fe ff ff 89 d9 e8 46 3a 02 00 65 ff 0d e7 e2 b3 7e 4c 8b b5 a8 fe ff ff 0f 85 6e fe ff ff e8 85 6c b2 ff e9 64 fe ff ff 0f 0b <0f> 0b 0f 1f 40 00 55 48 89 e5 48 83 7e 28 00 74 0c f0 80 4e 01 04
RSP: 0000:ffffc900006e3920 EFLAGS: 00010207
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000ac2 RDI: 0000000000000000
RBP: ffffc900006e3af8 R08: 0000000000000000 R09: ffffffff814dbc46
R10: 0000000000000080 R11: 0000000000000ac2 R12: ffffc900006e3c48
R13: ffffc900006e3b08 R14: ffff888115bdc000 R15: ffff88810d18d128
FS:  0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f29fdb0638e CR3: 000000010cbf4000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400