ci starts bisection 2024-03-02 16:30:31.531262593 +0000 UTC m=+79934.454847599 bisecting cause commit starting from 5ad3cb0ed525b80c7f66c32b49a68c1f3510bec9 building syzkaller on 25905f5d0a2a7883bd33491997556193582c6059 ensuring issue is reproducible on original commit 5ad3cb0ed525b80c7f66c32b49a68c1f3510bec9 testing commit 5ad3cb0ed525b80c7f66c32b49a68c1f3510bec9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0b1f2b0e49e8066c72617d5a176cdc19ab6708ae64156ef30fdee0464be2a95a all runs: crashed: KASAN: slab-use-after-free Read in sys_io_cancel representative crash: KASAN: slab-use-after-free Read in sys_io_cancel, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 5ad3cb0ed525b80c7f66c32b49a68c1f3510bec9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a39fd9d79f5e60e35c542966e831542868687975892692ca03120345ff94ede2 all runs: crashed: KASAN: slab-use-after-free Read in sys_io_cancel representative crash: KASAN: slab-use-after-free Read in sys_io_cancel, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=3937 full=7963 leaves diff=2020 split chunks (needed=false): <2020> split chunk #0 of len 2020 into 5 parts testing without sub-chunk 1/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 5ad3cb0ed525b80c7f66c32b49a68c1f3510bec9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ff872048212dcd40ab27f16bd8f78d3f4869874d3192baa33315d5594cae7c16 all runs: crashed: KASAN: slab-use-after-free Read in sys_io_cancel representative crash: KASAN: slab-use-after-free Read in sys_io_cancel, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 5ad3cb0ed525b80c7f66c32b49a68c1f3510bec9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7dbfa0d7f8e2fe83a1308e1d368a357c7062e42b87ed3bd45fc57027ce415aa9 all runs: crashed: KASAN: slab-use-after-free Read in sys_io_cancel representative crash: KASAN: slab-use-after-free Read in sys_io_cancel, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 5ad3cb0ed525b80c7f66c32b49a68c1f3510bec9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4f5364f2d104da27a0c9f0b84e3402c8965c65dbfb74488756856bee4a4efd36 all runs: crashed: KASAN: slab-use-after-free Read in sys_io_cancel representative crash: KASAN: slab-use-after-free Read in sys_io_cancel, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 5ad3cb0ed525b80c7f66c32b49a68c1f3510bec9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9b32a94bfabeb0de9f3d5969699e8a891d81157643ffea8f7d80a3f63d296690 all runs: OK false negative chance: 0.000 testing without sub-chunk 5/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 5ad3cb0ed525b80c7f66c32b49a68c1f3510bec9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ac7189dae758071aeaa3d3413013afc5953d5c5f9e8e856bcf5c0236e01d4f20 all runs: OK false negative chance: 0.000 minimized to 808 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ATM AX25 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 DAX DLM DVB_CORE ENCRYPTED_KEYS EXTCON FB GENEVE GPIOLIB HAMRADIO HAVE_CLK HID_SENSOR_HUB HID_SMARTJOYPLUS HID_THRUSTMASTER HID_ZEROPLUS I2C_MUX IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN IOMMUFD IP_SCTP IRQ_REMAP KVM KVM_INTEL L2TP LIBNVDIMM MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_COMMON_OPTIONS 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_DLN2 MFD_RETU MFD_VIPERBOARD MMC MTD MTD_UBI NETFILTER_ADVANCED NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NF_CONNTRACK_SNMP NF_NAT_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_ARP NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 NLS_CODEPAGE_775 NLS_CODEPAGE_850 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OCFS2_DEBUG_FS OCFS2_FS OCFS2_FS_O2CB OCFS2_FS_STATS OCFS2_FS_USERSPACE_CLUSTER OF_GPIO OF_PMEM OMFS_FS OPENVSWITCH OPENVSWITCH_GENEVE OPENVSWITCH_GRE OPENVSWITCH_VXLAN ORANGEFS_FS OSF_PARTITION OVERLAY_FS OVERLAY_FS_DEBUG OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PAGE_IDLE_FLAG PAGE_POOL PAGE_REPORTING PAGE_TABLE_ISOLATION PAHOLE_HAS_BTF_TAG PAHOLE_HAS_LANG_EXCLUDE PAHOLE_HAS_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCMCIA PCMCIA_LOAD_CIS PERCPU_STATS PERSISTENT_KEYRINGS PHONET PHYLINK PHY_CPCAP_USB PHY_QCOM_USB_HS PHY_QCOM_USB_HSIC PHY_SAMSUNG_USB2 PHY_TUSB1210 PKCS7_TEST_KEY PKCS8_PRIVATE_KEY_PARSER PM_CLK PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOE_HASH_BITS_4 PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_NOTIFIERS PRISM2_USB PROC_CHILDREN PSI PSTORE PSTORE_COMPRESS QCOM_QMI_HELPERS 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USB_SERIAL_AIRCABLE USB_SERIAL_ARK3116 USB_SERIAL_BELKIN USB_SERIAL_CH341 USB_SERIAL_CONSOLE USB_SERIAL_CP210X USB_SERIAL_CYBERJACK USB_SERIAL_CYPRESS_M8 USB_SERIAL_DEBUG USB_SERIAL_DIGI_ACCELEPORT USB_SERIAL_EDGEPORT USB_SERIAL_EDGEPORT_TI USB_SERIAL_EMPEG USB_SERIAL_F81232 USB_SERIAL_F8153X USB_SERIAL_FTDI_SIO USB_SERIAL_GARMIN USB_SERIAL_GENERIC USB_SERIAL_IPAQ USB_SERIAL_IPW USB_SERIAL_IR USB_SERIAL_IUU USB_SERIAL_KEYSPAN USB_SERIAL_KEYSPAN_PDA USB_SERIAL_KLSI USB_SERIAL_KOBIL_SCT USB_SERIAL_MCT_U232 USB_SERIAL_METRO USB_SERIAL_MOS7715_PARPORT USB_SERIAL_MOS7720 USB_SERIAL_MOS7840 USB_SERIAL_MXUPORT USB_SERIAL_NAVMAN USB_SERIAL_OMNINET USB_SERIAL_OPTICON USB_SERIAL_OPTION USB_SERIAL_OTI6858 USB_SERIAL_PL2303 USB_SERIAL_QCAUX USB_SERIAL_QT2 USB_SERIAL_QUALCOMM USB_SERIAL_SAFE USB_SERIAL_SIERRAWIRELESS USB_SERIAL_SIMPLE USB_SERIAL_SPCP8X5 USB_SERIAL_SSU100 USB_SERIAL_SYMBOL USB_SERIAL_TI USB_SERIAL_UPD78F0730 USB_SERIAL_VISOR USB_SERIAL_WHITEHEAT USB_SERIAL_WISHBONE USB_SERIAL_WWAN USB_SERIAL_XR USB_SERIAL_XSENS_MT USB_SEVSEG USB_SI470X USB_SI4713 USB_SIERRA_NET USB_SISUSBVGA USB_SL811_CS USB_SL811_HCD USB_SL811_HCD_ISO USB_SNP_CORE USB_SPEEDTOUCH USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_ENE_UB6250 USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_REALTEK USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_STV06XX USB_TEST USB_TMC USB_TRANCEVIBRATOR USB_UAS USB_UEAGLEATM USB_ULPI_BUS USB_USBNET USB_USS720 USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_VIDEO_CLASS USB_VIDEO_CLASS_INPUT_EVDEV USB_VL600 USB_WDM USB_XHCI_DBGCAP USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER UVC_COMMON U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VDPA_USER VETH VFIO VFIO_DEVICE_CDEV VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_PCI_MMAP VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET 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 VXLAN 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 ZONE_DEVICE ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC] disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed picked [v6.7 v6.6 v6.5 v6.3 v6.1 v5.19 v5.17 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 30 release tags testing release v6.7 testing commit 0dd3ee31125508cd67f7e7172247f05b7fd1753a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fded0999b588638339a6d8f2355e71bf9c03adc9d1b221b9b33005339ed52aa1 all runs: OK false negative chance: 0.000 # git bisect start 5ad3cb0ed525b80c7f66c32b49a68c1f3510bec9 0dd3ee31125508cd67f7e7172247f05b7fd1753a Bisecting: 6702 revisions left to test after this (roughly 13 steps) [cf65598d5909acf5e7b7dc9e21786e386356bc81] Merge tag 'drm-next-2024-01-10' of git://anongit.freedesktop.org/drm/drm testing commit cf65598d5909acf5e7b7dc9e21786e386356bc81 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 76372fa2d3e53e79b9e1cda1f8e78e7c88facb58364c4d7a14c6a6e06939ec97 all runs: OK false negative chance: 0.000 # git bisect good cf65598d5909acf5e7b7dc9e21786e386356bc81 Bisecting: 3352 revisions left to test after this (roughly 12 steps) [77c9622d87d21d989eb1a866e4df8eb5e3ce00e0] Merge tag 'memblock-v6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock testing commit 77c9622d87d21d989eb1a866e4df8eb5e3ce00e0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a020950a248523de14d2c08e4ef2e02bd5d5a2ab465411334907eda14d6303a0 all runs: OK false negative chance: 0.000 # git bisect good 77c9622d87d21d989eb1a866e4df8eb5e3ce00e0 Bisecting: 1676 revisions left to test after this (roughly 11 steps) [fdeba0b57d61b40a708de361294fde3e1495588d] Merge branch 'nfp-fixes' testing commit fdeba0b57d61b40a708de361294fde3e1495588d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 22aeb27ce23da9734290c81fd0ae5428069acc60528f8c1d89540fba10b64e4a all runs: OK false negative chance: 0.000 # git bisect good fdeba0b57d61b40a708de361294fde3e1495588d Bisecting: 838 revisions left to test after this (roughly 10 steps) [ee89921da471edcb4b1e67f5bbfedddf39749782] ice: fix pin phase adjust updates on PF reset testing commit ee89921da471edcb4b1e67f5bbfedddf39749782 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6f777fd0080e150e588fe8d85b273c6c98be4284a37c1457154a23275ba1c60a all runs: OK false negative chance: 0.000 # git bisect good ee89921da471edcb4b1e67f5bbfedddf39749782 Bisecting: 418 revisions left to test after this (roughly 9 steps) [06b7ef70b1f29de685ea80f0c1b8f0a0b0e16d18] Merge tag 'drm-fixes-2024-02-23' of git://anongit.freedesktop.org/drm/drm testing commit 06b7ef70b1f29de685ea80f0c1b8f0a0b0e16d18 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c15bb3bc705d06310d14e66d0d1279807bcf29f1945566d339669ecb44dc71b2 all runs: OK false negative chance: 0.000 # git bisect good 06b7ef70b1f29de685ea80f0c1b8f0a0b0e16d18 Bisecting: 208 revisions left to test after this (roughly 8 steps) [e326df53af0021f48a481ce9d489efda636c2dc6] Merge tag 'v6.8-p5' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 testing commit e326df53af0021f48a481ce9d489efda636c2dc6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: aa57bcb10649fc44f3e4c440a3d58e2c675a06e81d2dc1ba82472648c51063d1 all runs: OK false negative chance: 0.000 # git bisect good e326df53af0021f48a481ce9d489efda636c2dc6 Bisecting: 114 revisions left to test after this (roughly 7 steps) [161671a6ebeecdab36ee4b8a6330d99b0f772412] Merge tag 'probes-fixes-v6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace testing commit 161671a6ebeecdab36ee4b8a6330d99b0f772412 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6d05e386d70c384a232645786ab1300ab894fb2f673f343b4ac6e83c4c84db3c all runs: OK false negative chance: 0.000 # git bisect good 161671a6ebeecdab36ee4b8a6330d99b0f772412 Bisecting: 58 revisions left to test after this (roughly 6 steps) [fbf9e3b6978bbd350f2a4c81e112431610dd065c] Merge tag 'sound-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound testing commit fbf9e3b6978bbd350f2a4c81e112431610dd065c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 31b9155ef5b446e9008806464808fba6cc9e02016e5bd4aa14e8a125936e5a5d all runs: OK false negative chance: 0.000 # git bisect good fbf9e3b6978bbd350f2a4c81e112431610dd065c Bisecting: 32 revisions left to test after this (roughly 5 steps) [5870ba3dc6e4ca4b29a0d1ddd9c3e35b44f0b172] Merge tag 'ceph-for-6.8-rc7' of https://github.com/ceph/ceph-client testing commit 5870ba3dc6e4ca4b29a0d1ddd9c3e35b44f0b172 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 06d5da640afe17e3441cff462754103f479e4430397d314ff7abc714bb053932 all runs: crashed: KASAN: slab-use-after-free Read in sys_io_cancel representative crash: KASAN: slab-use-after-free Read in sys_io_cancel, types: [KASAN] # git bisect bad 5870ba3dc6e4ca4b29a0d1ddd9c3e35b44f0b172 Bisecting: 12 revisions left to test after this (roughly 4 steps) [371e4a1f914aff0d128c518895495ef44059ddc6] Merge tag 'mmc-v6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc testing commit 371e4a1f914aff0d128c518895495ef44059ddc6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 450505d44f2af130ed6b71089dd3159d6de65b3aa3d48676b3b496514464d7a8 all runs: OK false negative chance: 0.000 # git bisect good 371e4a1f914aff0d128c518895495ef44059ddc6 Bisecting: 5 revisions left to test after this (roughly 3 steps) [3aec97e0c793353318235b5e9031f91b8f09241e] Merge tag 'exfat-for-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat testing commit 3aec97e0c793353318235b5e9031f91b8f09241e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9a0ded93972032ee5f2373cf39e90d724a2fb54b8a93349fadf2b2fe1372a98c all runs: crashed: KASAN: slab-use-after-free Read in sys_io_cancel representative crash: KASAN: slab-use-after-free Read in sys_io_cancel, types: [KASAN] # git bisect bad 3aec97e0c793353318235b5e9031f91b8f09241e Bisecting: 4 revisions left to test after this (roughly 2 steps) [54cbc058d86beca3515c994039b5c0f0a34f53dd] fs/aio: Make io_cancel() generate completions again testing commit 54cbc058d86beca3515c994039b5c0f0a34f53dd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dd8fafd8b635b84c0473dc914d67e28c9d856ed92f4abf4ec35b769bc611108b all runs: crashed: KASAN: slab-use-after-free Read in sys_io_cancel representative crash: KASAN: slab-use-after-free Read in sys_io_cancel, types: [KASAN] # git bisect bad 54cbc058d86beca3515c994039b5c0f0a34f53dd Bisecting: 0 revisions left to test after this (roughly 0 steps) [5f7a07646655fb4108da527565dcdc80124b14c4] afs: Fix endless loop in directory parsing testing commit 5f7a07646655fb4108da527565dcdc80124b14c4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7551437f3a913ca36751b562e4674fb1ade2b81a8f4c0f9085c4e0e73f34ffe8 all runs: OK false negative chance: 0.000 # git bisect good 5f7a07646655fb4108da527565dcdc80124b14c4 54cbc058d86beca3515c994039b5c0f0a34f53dd is the first bad commit commit 54cbc058d86beca3515c994039b5c0f0a34f53dd Author: Bart Van Assche Date: Thu Feb 15 12:47:39 2024 -0800 fs/aio: Make io_cancel() generate completions again The following patch accidentally removed the code for delivering completions for cancelled reads and writes to user space: "[PATCH 04/33] aio: remove retry-based AIO" (https://lore.kernel.org/all/1363883754-27966-5-git-send-email-koverstreet@google.com/) >From that patch: - if (kiocbIsCancelled(iocb)) { - ret = -EINTR; - aio_complete(iocb, ret, 0); - /* must not access the iocb after this */ - goto out; - } This leads to a leak in user space of a struct iocb. Hence this patch that restores the code that reports to user space that a read or write has been cancelled successfully. Fixes: 41003a7bcfed ("aio: remove retry-based AIO") Cc: Christoph Hellwig Cc: Avi Kivity Cc: Sandeep Dhavale Cc: Jens Axboe Cc: Greg Kroah-Hartman Cc: Kent Overstreet Cc: stable@vger.kernel.org Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20240215204739.2677806-3-bvanassche@acm.org Signed-off-by: Christian Brauner fs/aio.c | 27 +++++++++++---------------- 1 file changed, 11 insertions(+), 16 deletions(-) accumulated error probability: 0.00 culprit signature: dd8fafd8b635b84c0473dc914d67e28c9d856ed92f4abf4ec35b769bc611108b parent signature: 7551437f3a913ca36751b562e4674fb1ade2b81a8f4c0f9085c4e0e73f34ffe8 revisions tested: 21, total time: 6h50m49.263286371s (build: 3h36m4.465307511s, test: 2h58m16.702577476s) first bad commit: 54cbc058d86beca3515c994039b5c0f0a34f53dd fs/aio: Make io_cancel() generate completions again recipients (to): ["bcrl@kvack.org" "brauner@kernel.org" "bvanassche@acm.org" "linux-aio@kvack.org"] recipients (cc): ["brauner@kernel.org" "linux-fsdevel@vger.kernel.org" "linux-kernel@vger.kernel.org" "viro@zeniv.linux.org.uk"] crash: KASAN: slab-use-after-free Read in sys_io_cancel ================================================================== BUG: KASAN: slab-use-after-free in __do_sys_io_cancel fs/aio.c:2207 [inline] BUG: KASAN: slab-use-after-free in __se_sys_io_cancel+0x30b/0x310 fs/aio.c:2174 Read of size 4 at addr ffff8880784372a0 by task syz-executor.0/3332 CPU: 0 PID: 3332 Comm: syz-executor.0 Not tainted 6.8.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xf8/0x260 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0x167/0x540 mm/kasan/report.c:488 kasan_report+0x142/0x180 mm/kasan/report.c:601 __do_sys_io_cancel fs/aio.c:2207 [inline] __se_sys_io_cancel+0x30b/0x310 fs/aio.c:2174 do_syscall_64+0x94/0x1a0 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7fb9a0a7dda9 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:00007fb9a18240c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d2 RAX: ffffffffffffffda RBX: 00007fb9a0babf80 RCX: 00007fb9a0a7dda9 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 00007fb9a17c9000 RBP: 00007fb9a0aca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fb9a0babf80 R15: 00007ffeac9d98c8 Allocated by task 3332: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:314 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:340 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3813 [inline] slab_alloc_node mm/slub.c:3860 [inline] kmem_cache_alloc+0x15a/0x390 mm/slub.c:3867 aio_get_req fs/aio.c:1060 [inline] io_submit_one+0x12e/0x1600 fs/aio.c:2050 __do_sys_io_submit fs/aio.c:2113 [inline] __se_sys_io_submit+0x11c/0x330 fs/aio.c:2083 do_syscall_64+0x94/0x1a0 entry_SYSCALL_64_after_hwframe+0x6f/0x77 Freed by task 386: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:643 poison_slab_object+0xee/0x1a0 mm/kasan/common.c:241 __kasan_slab_free+0x34/0x70 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kmem_cache_free+0x136/0x330 mm/slub.c:4363 aio_poll_complete_work+0x418/0x620 fs/aio.c:1767 process_one_work kernel/workqueue.c:2633 [inline] process_scheduled_works+0x7e9/0xfd0 kernel/workqueue.c:2706 worker_thread+0x868/0xca0 kernel/workqueue.c:2787 kthread+0x267/0x2c0 kernel/kthread.c:388 ret_from_fork+0x32/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243 Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47 __kasan_record_aux_stack+0xae/0x100 mm/kasan/generic.c:589 insert_work+0x38/0x230 kernel/workqueue.c:1653 __queue_work+0x81f/0xa70 kernel/workqueue.c:1802 queue_work_on+0xf7/0x1a0 kernel/workqueue.c:1837 queue_work include/linux/workqueue.h:548 [inline] schedule_work include/linux/workqueue.h:609 [inline] aio_poll_cancel+0x98/0x150 fs/aio.c:1779 __do_sys_io_cancel fs/aio.c:2196 [inline] __se_sys_io_cancel+0xee/0x310 fs/aio.c:2174 do_syscall_64+0x94/0x1a0 entry_SYSCALL_64_after_hwframe+0x6f/0x77 The buggy address belongs to the object at ffff888078437280 which belongs to the cache aio_kiocb of size 216 The buggy address is located 32 bytes inside of freed 216-byte region [ffff888078437280, ffff888078437358) The buggy address belongs to the physical page: page:ffffea0001e10dc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x78437 flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000800 ffff88800e307a00 dead000000000122 0000000000000000 raw: 0000000000000000 00000000800c000c 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 3328, tgid 3327 (syz-executor.0), ts 57133622713, free_ts 56505551396 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x10f/0x130 mm/page_alloc.c:1533 prep_new_page mm/page_alloc.c:1540 [inline] get_page_from_freelist+0x345c/0x3600 mm/page_alloc.c:3311 __alloc_pages+0x255/0x650 mm/page_alloc.c:4567 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] alloc_slab_page+0x5f/0x160 mm/slub.c:2190 allocate_slab mm/slub.c:2354 [inline] new_slab+0x70/0x270 mm/slub.c:2407 ___slab_alloc+0xa79/0x10b0 mm/slub.c:3540 __slab_alloc mm/slub.c:3625 [inline] __slab_alloc_node mm/slub.c:3678 [inline] slab_alloc_node mm/slub.c:3850 [inline] kmem_cache_alloc+0x235/0x390 mm/slub.c:3867 aio_get_req fs/aio.c:1060 [inline] io_submit_one+0x12e/0x1600 fs/aio.c:2050 __do_sys_io_submit fs/aio.c:2113 [inline] __se_sys_io_submit+0x11c/0x330 fs/aio.c:2083 do_syscall_64+0x94/0x1a0 entry_SYSCALL_64_after_hwframe+0x6f/0x77 page last free pid 3264 tgid 3264 stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1140 [inline] free_unref_page_prepare+0x896/0x9b0 mm/page_alloc.c:2346 free_unref_page_list+0x54e/0x7f0 mm/page_alloc.c:2532 release_pages+0x194b/0x1b10 mm/swap.c:1042 tlb_batch_pages_flush mm/mmu_gather.c:98 [inline] tlb_flush_mmu_free mm/mmu_gather.c:293 [inline] tlb_flush_mmu+0x273/0x3d0 mm/mmu_gather.c:300 tlb_finish_mmu+0xb6/0x1c0 mm/mmu_gather.c:392 exit_mmap+0x431/0xa40 mm/mmap.c:3292 __mmput+0x9b/0x2d0 kernel/fork.c:1343 exit_mm+0x113/0x1b0 kernel/exit.c:569 do_exit+0x7e2/0x2430 kernel/exit.c:858 do_group_exit+0x1b9/0x280 kernel/exit.c:1020 __do_sys_exit_group kernel/exit.c:1031 [inline] __se_sys_exit_group kernel/exit.c:1029 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1029 do_syscall_64+0x94/0x1a0 entry_SYSCALL_64_after_hwframe+0x6f/0x77 Memory state around the buggy address: ffff888078437180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888078437200: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888078437280: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888078437300: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc ffff888078437380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================