ci2 starts bisection 2024-03-20 11:03:42.890389093 +0000 UTC m=+31727.880953173 bisecting fixing commit since 861c0981648f5b64c86fd028ee622096eb7af05a building syzkaller on 7f400fcb5977e5e102241f2ee93246b07b09e13c ensuring issue is reproducible on original commit 861c0981648f5b64c86fd028ee622096eb7af05a testing commit 861c0981648f5b64c86fd028ee622096eb7af05a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3aa29a156431bb7f4911195171be85377238a38fb2685378a6bccad5bb3e957e all runs: crashed: general protection fault in jbd2__journal_start representative crash: general protection fault in jbd2__journal_start, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 861c0981648f5b64c86fd028ee622096eb7af05a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2c3c436d8e66a4d4616f39c39f6578589bc03b48cbbe0f237954e9477520ab85 all runs: crashed: BUG: unable to handle kernel paging request in jbd2__journal_start representative crash: BUG: unable to handle kernel paging request in jbd2__journal_start, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed kconfig minimization: base=3932 full=7678 leaves diff=2008 split chunks (needed=false): <2008> split chunk #0 of len 2008 into 5 parts testing without sub-chunk 1/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 861c0981648f5b64c86fd028ee622096eb7af05a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 29d4aed8287473b83b93c809212212f004644b10794b591afddd32ebcf49f601 all runs: crashed: BUG: unable to handle kernel paging request in jbd2__journal_start representative crash: BUG: unable to handle kernel paging request in jbd2__journal_start, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 861c0981648f5b64c86fd028ee622096eb7af05a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7ab7fef5cb99189941ae8af687b912b0829fcecb86dfa4ab5c938cb5147374b3 all runs: crashed: BUG: unable to handle kernel paging request in jbd2__journal_start representative crash: BUG: unable to handle kernel paging request in jbd2__journal_start, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit 861c0981648f5b64c86fd028ee622096eb7af05a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 95420f181bbb283ef64af7519d42e0f25eeb14bb2759b9cbb88979fe96e38b96 all runs: crashed: BUG: unable to handle kernel paging request in jbd2__journal_start representative crash: BUG: unable to handle kernel paging request in jbd2__journal_start, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 861c0981648f5b64c86fd028ee622096eb7af05a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1b56c811bd730c96d18ad326a3c1d29df999f828bfa85176e61c4bb9ec5a2f68 all runs: crashed: BUG: unable to handle kernel paging request in jbd2__journal_start representative crash: BUG: unable to handle kernel paging request in jbd2__journal_start, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 861c0981648f5b64c86fd028ee622096eb7af05a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e4dcdf9b951b6f459a747973c248b2f38b3670a8ee9b140b62e5f1d2b368d799 all runs: OK false negative chance: 0.000 minimized to 400 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DVB_CORE EXTCON FB GPIOLIB HID_ZEROPLUS I2C_MUX IIO IOMMUFD IRQ_REMAP KVM KVM_INTEL LIBNVDIMM MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_CONTROLLER MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_VIPERBOARD PARPORT PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SND SOUND SPI SSB TAP TARGET_CORE TUN USB_AMD5536UDC USB_ATM USB_CONFIGFS USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_PRINTER 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VHOST_RING VHOST_TASK VHOST_VDPA VHOST_VSOCK VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOMODE_HELPERS VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CMDLINE VIDEO_CS53L32A VIDEO_CX231XX VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_DEV VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_NOMODESET VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2_I2C VIDEO_V4L2_SUBDEV_API VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_BALLOON VIRTIO_DMA_SHARED_BUFFER VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMAP_PFN VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS WANT_DEV_COREDUMP WEXT_CORE WEXT_PRIV WEXT_PROC WIREGUARD WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_PURELIFI WLAN_VENDOR_SILABS X86_SGX X86_SGX_KVM X86_USER_SHADOW_STACK X86_X2APIC X86_X32_ABI XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC] disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing current HEAD a4145ce1e7bc247fd6f2846e8699473448717b37 testing commit a4145ce1e7bc247fd6f2846e8699473448717b37 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 28d32fc71d8370727ed9105567da630df5490621316ddc6393b00ed29e00e554 all runs: crashed: BUG: unable to handle kernel paging request in jbd2__journal_start representative crash: BUG: unable to handle kernel paging request in jbd2__journal_start, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 1h33m45.940580364s (build: 36m55.276372527s, test: 53m4.076291349s) crash still not fixed or there were kernel test errors commit msg: Merge tag 'bcachefs-2024-03-19' of https://evilpiepirate.org/git/bcachefs crash: BUG: unable to handle kernel paging request in jbd2__journal_start loop0: detected capacity change from 0 to 32768 XFS (loop0): Mounting V5 Filesystem a2f82aab-77f8-4286-afd4-a8f747a74bab XFS (loop0): Ending clean mount XFS (loop0): Quotacheck needed: Please wait. XFS (loop0): Quotacheck: Done. BUG: unable to handle page fault for address: 000000005452414e #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 800000011d01e067 P4D 800000011d01e067 PUD 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 0 PID: 2878 Comm: syz-executor.0 Not tainted 6.8.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 RIP: 0010:jbd2__journal_start+0x32/0x200 fs/jbd2/transaction.c:496 Code: 56 41 55 41 54 53 48 83 ec 10 65 48 8b 04 25 80 fa 02 00 48 85 ff 74 20 48 89 fd 48 8b 98 a8 11 00 00 48 85 db 74 2e 48 8b 03 <48> 39 28 0f 85 64 01 00 00 ff 43 1c eb 07 48 c7 c3 e2 ff ff ff 48 RSP: 0018:ffffc900057bb618 EFLAGS: 00010282 RAX: 000000005452414e RBX: ffff88811af1f1d0 RCX: 0000000000000008 RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88810de9c000 RBP: ffff88810de9c000 R08: 0000000000000c40 R09: 0000000000000001 R10: 0000000000000000 R11: ffffffff81569fb0 R12: 0000000000000000 R13: ffffffffffffffe2 R14: 0000000000001733 R15: 0000000000000001 FS: 00007f0caab146c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000005452414e CR3: 0000000112320000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __ext4_journal_start_sb+0xc3/0x200 fs/ext4/ext4_jbd2.c:112 __ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline] ext4_dirty_inode+0x34/0x80 fs/ext4/inode.c:5939 __mark_inode_dirty+0xbc/0x3d0 fs/fs-writeback.c:2477 generic_update_time fs/inode.c:1907 [inline] inode_update_time fs/inode.c:1920 [inline] __file_update_time fs/inode.c:2109 [inline] file_update_time+0x96/0xb0 fs/inode.c:2139 ext4_page_mkwrite+0xe2/0x760 fs/ext4/inode.c:6060 do_page_mkwrite+0x49/0xf0 mm/memory.c:3089 wp_page_shared mm/memory.c:3476 [inline] do_wp_page+0x184/0x1680 mm/memory.c:3626 handle_pte_fault mm/memory.c:5314 [inline] __handle_mm_fault mm/memory.c:5439 [inline] handle_mm_fault+0x519/0x600 mm/memory.c:5604 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x2c8/0x770 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0010:rep_movs_alternative+0x4a/0x70 arch/x86/lib/copy_user_64.S:71 Code: 75 f1 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb c9 a4 c3 cc cc cc cc 48 89 c8 48 c1 e9 03 83 e0 07 f3 48 a5 89 c1 RSP: 0018:ffffc900057bba48 EFLAGS: 00050202 RAX: 0000000020020040 RBX: 00000000000000c0 RCX: 0000000000000040 RDX: 0000000000000000 RSI: ffff88811152bd40 RDI: 0000000020020000 RBP: ffffc900057bbce0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff81703bf0 R12: ffff888111b2e000 R13: ffff88811a05aa00 R14: 000000002001ff80 R15: ffff88811152bcc0 copy_user_generic arch/x86/include/asm/uaccess_64.h:110 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:131 [inline] _copy_to_user+0x39/0x50 lib/usercopy.c:41 copy_to_user include/linux/uaccess.h:191 [inline] xfs_bulkstat_fmt+0x16/0x50 fs/xfs/xfs_ioctl.c:744 xfs_bulkstat_one_int+0x32a/0x3a0 fs/xfs/xfs_itable.c:161 xfs_bulkstat_iwalk+0x1a/0x40 fs/xfs/xfs_itable.c:239 xfs_iwalk_ag_recs+0x13b/0x1b0 fs/xfs/xfs_iwalk.c:213 xfs_iwalk_run_callbacks+0x8d/0x130 fs/xfs/xfs_iwalk.c:372 xfs_iwalk_ag+0x1f9/0x2a0 fs/xfs/xfs_iwalk.c:478 xfs_iwalk+0x107/0x1f0 fs/xfs/xfs_iwalk.c:580 xfs_bulkstat+0x119/0x170 fs/xfs/xfs_itable.c:308 xfs_ioc_bulkstat+0x15b/0x180 fs/xfs/xfs_ioctl.c:867 xfs_file_ioctl+0x60c/0xc90 fs/xfs/xfs_ioctl.c:1994 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl+0x6e/0xc0 fs/ioctl.c:890 do_syscall_64+0x95/0x1b0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f0caaf92da9 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:00007f0caab140c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0cab0c0f80 RCX: 00007f0caaf92da9 RDX: 000000002001fc40 RSI: 000000008040587f RDI: 0000000000000005 RBP: 00007f0caafdf47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f0cab0c0f80 R15: 00007ffd5650a9a8 Modules linked in: CR2: 000000005452414e ---[ end trace 0000000000000000 ]--- RIP: 0010:jbd2__journal_start+0x32/0x200 fs/jbd2/transaction.c:496 Code: 56 41 55 41 54 53 48 83 ec 10 65 48 8b 04 25 80 fa 02 00 48 85 ff 74 20 48 89 fd 48 8b 98 a8 11 00 00 48 85 db 74 2e 48 8b 03 <48> 39 28 0f 85 64 01 00 00 ff 43 1c eb 07 48 c7 c3 e2 ff ff ff 48 RSP: 0018:ffffc900057bb618 EFLAGS: 00010282 RAX: 000000005452414e RBX: ffff88811af1f1d0 RCX: 0000000000000008 RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88810de9c000 RBP: ffff88810de9c000 R08: 0000000000000c40 R09: 0000000000000001 R10: 0000000000000000 R11: ffffffff81569fb0 R12: 0000000000000000 R13: ffffffffffffffe2 R14: 0000000000001733 R15: 0000000000000001 FS: 00007f0caab146c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000005452414e CR3: 0000000112320000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 56 push %rsi 1: 41 55 push %r13 3: 41 54 push %r12 5: 53 push %rbx 6: 48 83 ec 10 sub $0x10,%rsp a: 65 48 8b 04 25 80 fa mov %gs:0x2fa80,%rax 11: 02 00 13: 48 85 ff test %rdi,%rdi 16: 74 20 je 0x38 18: 48 89 fd mov %rdi,%rbp 1b: 48 8b 98 a8 11 00 00 mov 0x11a8(%rax),%rbx 22: 48 85 db test %rbx,%rbx 25: 74 2e je 0x55 27: 48 8b 03 mov (%rbx),%rax * 2a: 48 39 28 cmp %rbp,(%rax) <-- trapping instruction 2d: 0f 85 64 01 00 00 jne 0x197 33: ff 43 1c incl 0x1c(%rbx) 36: eb 07 jmp 0x3f 38: 48 c7 c3 e2 ff ff ff mov $0xffffffffffffffe2,%rbx 3f: 48 rex.W