ci2 starts bisection 2023-12-27 07:36:20.994083578 +0000 UTC m=+402384.317969138 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: 5c325b1e85ca8a680bbe4e53723363dbe197e4388240f20ecde4107d4427fa5a 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_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 run #10: crashed: kernel BUG in ext4_writepages run #11: crashed: kernel BUG in __ext4_journal_stop run #12: crashed: kernel BUG in __ext4_journal_stop run #13: crashed: kernel BUG in ext4_writepages run #14: crashed: kernel BUG in __ext4_journal_stop run #15: crashed: kernel BUG in __ext4_journal_stop run #16: crashed: kernel BUG in __ext4_journal_stop run #17: crashed: kernel BUG in __ext4_journal_stop run #18: crashed: kernel BUG in ext4_writepages run #19: crashed: kernel BUG in __ext4_journal_stop representative crash: kernel BUG in __ext4_journal_stop, 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: 73775850970514d9b52d775c71a0eeebcb9746ebd7eddc22d7ddac01c6f97e92 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_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 bug reproduces without the instrumentation disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], 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 [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], 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: 0a32faa5c74384b5cf6a461582b499d0da0310c4c7029f4794132a5e354df278 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_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_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 7b148974607906d1e0bb0b276deb3fb6def47432 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e7e8d0d8215f3813688a4e25819428691e3fe1fab6d4d47cc29978855680b843 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_writepages 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_journal_stop 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 3/5 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: 7eacd078783b3e6da6646dace90337cbb3c01c931191ad0a26be0c95a4bb47bc 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_journal_stop 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 4/5 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: adddb4daa3a383e5ef449c627f983e5bcb7c4085bc507987ad2bb5e6eccc8dee 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_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_journal_stop run #8: crashed: kernel BUG in __ext4_journal_stop run #9: 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 [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 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 [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing current HEAD 401a2769d99066952f3bfb73a8ce6b0269bc04d7 testing commit 401a2769d99066952f3bfb73a8ce6b0269bc04d7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0220422f693266045a21618d64535f4c69641b09a9ca5005b92886a0be7c1495 run #0: crashed: kernel BUG in ext4_writepages 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_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_writepages run #9: 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: 1h2m52.840292554s (build: 37m43.965725938s, test: 22m23.851160246s) crash still not fixed or there were kernel test errors commit msg: UPSTREAM: dm verity: don't perform FEC for failed readahead IO crash: kernel BUG in ext4_writepages ------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2737! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 0 PID: 10 Comm: kworker/u4:1 Not tainted 6.1.57-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Workqueue: writeback wb_workfn (flush-7:1) RIP: 0010:ext4_writepages+0x110a/0x1110 fs/ext4/inode.c:2736 Code: fe ff ff 89 d9 e8 d6 35 02 00 65 ff 0d c7 b6 b4 7e 4c 8b b5 a8 fe ff ff 0f 85 6e fe ff ff e8 25 37 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:ffffc90000057920 EFLAGS: 00010207 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000aab RDI: 0000000000000000 RBP: ffffc90000057af8 R08: 0000000000000000 R09: ffffffff814ce866 R10: 0000000000000080 R11: 0000000000000aab R12: ffffc90000057c48 R13: ffffc90000057b08 R14: ffff888115ee3000 R15: ffff8881144406a8 FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556e66818 CR3: 000000010bb1f000 CR4: 00000000003506b0 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:1590 writeback_sb_inodes+0x3e2/0x6f0 fs/fs-writeback.c:1881 wb_writeback+0x17c/0x390 fs/fs-writeback.c:2055 wb_do_writeback fs/fs-writeback.c:2198 [inline] wb_workfn+0x106/0x4b0 fs/fs-writeback.c:2238 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:2736 Code: fe ff ff 89 d9 e8 d6 35 02 00 65 ff 0d c7 b6 b4 7e 4c 8b b5 a8 fe ff ff 0f 85 6e fe ff ff e8 25 37 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:ffffc90000057920 EFLAGS: 00010207 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000aab RDI: 0000000000000000 RBP: ffffc90000057af8 R08: 0000000000000000 R09: ffffffff814ce866 R10: 0000000000000080 R11: 0000000000000aab R12: ffffc90000057c48 R13: ffffc90000057b08 R14: ffff888115ee3000 R15: ffff8881144406a8 FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556e66818 CR3: 0000000117a5a000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400