ci2 starts bisection 2024-03-26 03:41:10.930264644 +0000 UTC m=+15082.903832795 bisecting fixing commit since b0c06048a8ff95e4599e761714866deb6f3f9e0f building syzkaller on da3c3ef8d98b7ba08828daa5b40f59b2dbc0ceaf ensuring issue is reproducible on original commit b0c06048a8ff95e4599e761714866deb6f3f9e0f testing commit b0c06048a8ff95e4599e761714866deb6f3f9e0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 53efbda39cc3f49b565236fc1da97f1fee0fb71bbcb9ee655e5ea9f82bc81c70 all runs: crashed: kernel BUG in ext4_writepages representative crash: kernel BUG in ext4_writepages, types: [BUG] check whether we can drop unnecessary instrumentation disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit b0c06048a8ff95e4599e761714866deb6f3f9e0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 54c4d948ccbab231bed1f404fd6eb12129f8bcd6a7e38419e2b020c43e607345 all runs: crashed: kernel BUG in ext4_writepages representative crash: kernel BUG in ext4_writepages, 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=6487 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 [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit b0c06048a8ff95e4599e761714866deb6f3f9e0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 92c5cf1d5fb6de3a60ce803fbfa8cf502d47f2115fb24a2ba9be9eb1a838492d all runs: crashed: kernel BUG in ext4_writepages representative crash: kernel BUG in ext4_writepages, 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 b0c06048a8ff95e4599e761714866deb6f3f9e0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cc7a0380a961cd9c0e20cd3bdc1abfd0de3e923f03db6723d436e6b251df9fb6 all runs: crashed: kernel BUG in ext4_writepages representative crash: kernel BUG in ext4_writepages, types: [BUG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit b0c06048a8ff95e4599e761714866deb6f3f9e0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 06e56cbfd3991047e7a2e9c4606997e7aad981493c39d426b2a2f9e8b96aa115 all runs: crashed: kernel BUG in ext4_writepages representative crash: kernel BUG in ext4_writepages, 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 b0c06048a8ff95e4599e761714866deb6f3f9e0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c3f91fb975009cd1a3ac3d9db354137fcee007b2c9a912b341be8f06621a26e7 all runs: crashed: kernel BUG in ext4_writepages representative crash: kernel BUG in ext4_writepages, types: [BUG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed testing commit b0c06048a8ff95e4599e761714866deb6f3f9e0f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building b0c06048a8ff95e4599e761714866deb6f3f9e0f: 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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing current HEAD 8790a94475c92d0969f6ff47b55fd15c4919ccaa testing commit 8790a94475c92d0969f6ff47b55fd15c4919ccaa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e25fdc91a539d5d1ab99c259ab139b3029a24710d5b5aee7657dee1f83e55a4d all runs: crashed: kernel BUG in ext4_writepages representative crash: kernel BUG in ext4_writepages, types: [BUG] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 41m20.22085047s (build: 18m7.35233078s, test: 20m43.280046351s) crash still not fixed or there were kernel test errors commit msg: ANDROID: ABI: Update symbol list for Exynos SoC crash: kernel BUG in ext4_writepages EXT4-fs (loop3): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 1 with error 28 ------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2749! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 1 PID: 114 Comm: kworker/u4:2 Not tainted 6.1.68-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Workqueue: writeback wb_workfn (flush-7:4) RIP: 0010:ext4_writepages+0x110a/0x1110 fs/ext4/inode.c:2748 Code: fe ff ff 89 d9 e8 96 36 02 00 65 ff 0d 17 8c b4 7e 4c 8b b5 a8 fe ff ff 0f 85 6e fe ff ff e8 75 0c b3 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: 0018:ffffc900003bb920 EFLAGS: 00010207 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000ab7 RDI: 0000000000000000 RBP: ffffc900003bbaf8 R08: 0000000000000000 R09: ffffffff814d1316 R10: 0000000000000080 R11: 0000000000000ab7 R12: ffffc900003bbc48 R13: ffffc900003bbb08 R14: ffff888116ecc000 R15: ffff88810d94cbe8 FS: 0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f236dabab58 CR3: 000000010e743000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_writepages+0xcc/0x210 mm/page-writeback.c:2472 __writeback_single_inode+0x43/0x350 fs/fs-writeback.c:1612 writeback_sb_inodes+0x3e2/0x6f0 fs/fs-writeback.c:1903 wb_writeback+0x17c/0x390 fs/fs-writeback.c:2077 wb_do_writeback fs/fs-writeback.c:2220 [inline] wb_workfn+0x106/0x4b0 fs/fs-writeback.c:2260 process_one_work+0x1c5/0x380 kernel/workqueue.c:2299 worker_thread+0x249/0x400 kernel/workqueue.c:2446 kthread+0xe6/0x100 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_writepages+0x110a/0x1110 fs/ext4/inode.c:2748 Code: fe ff ff 89 d9 e8 96 36 02 00 65 ff 0d 17 8c b4 7e 4c 8b b5 a8 fe ff ff 0f 85 6e fe ff ff e8 75 0c b3 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: 0018:ffffc900003bb920 EFLAGS: 00010207 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000ab7 RDI: 0000000000000000 RBP: ffffc900003bbaf8 R08: 0000000000000000 R09: ffffffff814d1316 R10: 0000000000000080 R11: 0000000000000ab7 R12: ffffc900003bbc48 R13: ffffc900003bbb08 R14: ffff888116ecc000 R15: ffff88810d94cbe8 FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555571e3818 CR3: 0000000114b6a000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400