ci2 starts bisection 2025-05-07 11:13:00.924186114 +0000 UTC m=+62111.127255993 bisecting fixing commit since c16c81c81336c0912eb3542194f16215c0a40037 building syzkaller on c3901742785ff25afdc6f470af7b25b69d7c4f2f ensuring issue is reproducible on original commit c16c81c81336c0912eb3542194f16215c0a40037 testing commit c16c81c81336c0912eb3542194f16215c0a40037 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 91cf4db7d319a3ba21a3b00d542ff7c1d4d7067a497a9a1b01cbf6b6cbd66763 run #0: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #1: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #2: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #3: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #4: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #5: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #6: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #7: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #8: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #9: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #10: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #11: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #12: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #13: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #14: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #15: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #16: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #17: crashed: KASAN: use-after-free Read in xfs_buf_inode_iodone run #18: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #19: crashed: KASAN: use-after-free Read in xfs_iflush_cluster representative crash: KASAN: use-after-free Read in xfs_iflush_cluster, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit c16c81c81336c0912eb3542194f16215c0a40037 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 458470782881bec80f30c4c3ef0ac8cf89ace765c83b1a6367565ad74a25fb76 run #0: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #1: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #2: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #3: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #4: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #5: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #6: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #7: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #8: OK run #9: OK representative crash: KASAN: use-after-free Read in xfs_iflush_cluster, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed kconfig minimization: base=3707 full=7305 leaves diff=2040 split chunks (needed=false): <2040> split chunk #0 of len 2040 into 5 parts testing without sub-chunk 1/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit c16c81c81336c0912eb3542194f16215c0a40037 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2398ecc9dd9f95a0eb1d3920b34a39b7c6686a3fc30b7db499884329afdde084 run #0: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #1: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #2: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #3: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #4: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #5: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #6: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #7: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #8: OK run #9: OK representative crash: KASAN: use-after-free Read in xfs_iflush_cluster, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit c16c81c81336c0912eb3542194f16215c0a40037 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cf52ba75a1684c2d41ad9fd74c0387f71ab83faecf8f65423f4732c7e645c431 run #0: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #1: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #2: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #3: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #4: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #5: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #6: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #7: OK run #8: OK run #9: OK representative crash: KASAN: use-after-free Read in xfs_iflush_cluster, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit c16c81c81336c0912eb3542194f16215c0a40037 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 88754e1eb3ca449fe2dd63dc8eaa4abb58513cb059440860bd7d4e79a20cec78 run #0: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #1: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #2: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #3: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #4: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #5: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #6: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #7: crashed: KASAN: use-after-free Read in xfs_iflush_cluster run #8: OK run #9: OK representative crash: KASAN: use-after-free Read in xfs_iflush_cluster, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit c16c81c81336c0912eb3542194f16215c0a40037 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fe1c831d78bfe26e9ed9896381a5fd672f44096a3b97ccc067075c3ab918f8c6 run #0: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #1: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #2: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #3: OK run #4: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: KASAN: use-after-free Read in xfs_inode_item_push, types: [KASAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit c16c81c81336c0912eb3542194f16215c0a40037 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fcc998739d2512b9aa2ddb1db37790a2aba4f8ed9b8c9c8f33d2fed99a59d84c all runs: OK false negative chance: 0.000 minimized to 408 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DVB_CORE EXTCON FB FRONTSWAP GPIOLIB HID_ZEROPLUS I2C_MUX IIO IRQ_REMAP 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_HOTPLUG_SPARSE MEMORY_HOTREMOVE MFD_VIPERBOARD PARPORT PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SND SOUND SPI SSB 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USB_XUSBATM USB_YUREX USB_ZR364XX USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VETH VFIO VFIO_IOMMU_TYPE1 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_VDPA VHOST_VSOCK VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOBUF_GEN VIDEOBUF_VMALLOC VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CPIA2 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_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_STK1160_COMMON VIDEO_TM6000 VIDEO_TM6000_ALSA VIDEO_TM6000_DVB VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2 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 X86_SGX X86_X2APIC X86_X32 XARRAY_MULTI 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 XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZBUD] disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed testing current HEAD 16fdf2c7111bd6927f16c3e811f5086fecebbf00 testing commit 16fdf2c7111bd6927f16c3e811f5086fecebbf00 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 07706d94ca8f136f69daa3034f38d23f75a7e4c434368de24d378de6f261abb5 run #0: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #1: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #2: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #3: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #4: crashed: KASAN: use-after-free Read in xfs_inode_item_push run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: KASAN: use-after-free Read in xfs_inode_item_push, types: [KASAN] crash still not fixed/happens on the oldest tested release reproducer is flaky (0.40 repro chance estimate) revisions tested: 8, total time: 2h16m6.43325657s (build: 25m17.803013614s, test: 1h47m30.03973945s) crash still not fixed or there were kernel test errors commit msg: Linux 5.15.181 crash: KASAN: use-after-free Read in xfs_inode_item_push ================================================================== BUG: KASAN: use-after-free in xfs_inode_item_push+0x2b3/0x2c0 fs/xfs/xfs_inode_item.c:582 Read of size 8 at addr ffff88811f3db8f0 by task xfsaild/loop2/12023 CPU: 1 PID: 12023 Comm: xfsaild/loop2 Not tainted 5.15.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x41/0x5e lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x6c/0x309 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:451 xfs_inode_item_push+0x2b3/0x2c0 fs/xfs/xfs_inode_item.c:582 xfsaild_push_item fs/xfs/xfs_trans_ail.c:414 [inline] xfsaild_push fs/xfs/xfs_trans_ail.c:472 [inline] xfsaild+0x807/0x1d90 fs/xfs/xfs_trans_ail.c:657 kthread+0x2f8/0x3b0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Allocated by task 12007: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x61/0x80 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x211/0x310 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:725 [inline] xfs_inode_item_init+0x1b/0xb0 fs/xfs/xfs_inode_item.c:675 xfs_trans_ijoin+0x9b/0xf0 fs/xfs/libxfs/xfs_trans_inode.c:36 xfs_init_new_inode+0x748/0x1960 fs/xfs/xfs_inode.c:918 xfs_qm_qino_alloc+0x362/0x9e0 fs/xfs/xfs_qm.c:790 xfs_qm_init_quotainos+0x19d/0x550 fs/xfs/xfs_qm.c:1559 xfs_qm_init_quotainfo+0xb0/0x880 fs/xfs/xfs_qm.c:644 xfs_qm_mount_quotas+0x3d/0x490 fs/xfs/xfs_qm.c:1435 xfs_mountfs+0x1678/0x16d0 fs/xfs/xfs_mount.c:904 xfs_fs_fill_super+0xc2c/0x1780 fs/xfs/xfs_super.c:1675 get_tree_bdev+0x38f/0x670 fs/super.c:1325 vfs_get_tree+0x83/0x1b0 fs/super.c:1530 do_new_mount fs/namespace.c:3013 [inline] path_mount+0x44f/0x1a60 fs/namespace.c:3343 do_mount fs/namespace.c:3356 [inline] __do_sys_mount fs/namespace.c:3564 [inline] __se_sys_mount fs/namespace.c:3541 [inline] __x64_sys_mount+0x1f5/0x260 fs/namespace.c:3541 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Freed by task 12011: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:360 ____kasan_slab_free mm/kasan/common.c:366 [inline] ____kasan_slab_free mm/kasan/common.c:328 [inline] __kasan_slab_free+0xe0/0x110 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook mm/slub.c:1731 [inline] slab_free mm/slub.c:3499 [inline] kmem_cache_free+0x7e/0x450 mm/slub.c:3515 xfs_inode_free_callback+0x195/0x2a0 fs/xfs/xfs_icache.c:142 rcu_do_batch kernel/rcu/tree.c:2523 [inline] rcu_core+0x58c/0x1270 kernel/rcu/tree.c:2763 handle_softirqs+0x14f/0x4f0 kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu kernel/softirq.c:641 [inline] irq_exit_rcu+0xd0/0x110 kernel/softirq.c:653 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0x6a/0x90 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 The buggy address belongs to the object at ffff88811f3db8c0 which belongs to the cache xfs_ili of size 256 The buggy address is located 48 bytes inside of 256-byte region [ffff88811f3db8c0, ffff88811f3db9c0) The buggy address belongs to the page: page:ffffea00047cf6c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11f3db flags: 0x200000000000200(slab|node=0|zone=2) raw: 0200000000000200 ffffea00048f4dc0 0000000200000002 ffff8881015a9780 raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x112c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 2829, ts 161325644823, free_ts 146708404158 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x12ff/0x3170 mm/page_alloc.c:4192 __alloc_pages+0x1b2/0x420 mm/page_alloc.c:5466 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab+0x2eb/0x430 mm/slub.c:1912 new_slab mm/slub.c:1975 [inline] ___slab_alloc+0xb1c/0xf80 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x2d7/0x310 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:725 [inline] xfs_inode_item_init+0x1b/0xb0 fs/xfs/xfs_inode_item.c:675 xfs_trans_ijoin+0x9b/0xf0 fs/xfs/libxfs/xfs_trans_inode.c:36 xfs_trans_alloc_dir+0x188/0x3f0 fs/xfs/xfs_trans.c:1246 xfs_remove+0x367/0x9a0 fs/xfs/xfs_inode.c:2792 xfs_vn_unlink+0xf3/0x200 fs/xfs/xfs_iops.c:387 vfs_unlink+0x291/0x800 fs/namei.c:4280 do_unlinkat+0x30f/0x550 fs/namei.c:4348 __do_sys_unlink fs/namei.c:4396 [inline] __se_sys_unlink fs/namei.c:4394 [inline] __x64_sys_unlink+0xa0/0xe0 fs/namei.c:4394 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare+0x34e/0x730 mm/page_alloc.c:1391 free_unref_page_prepare mm/page_alloc.c:3317 [inline] free_unref_page+0x19/0x4b0 mm/page_alloc.c:3396 __unfreeze_partials+0x27d/0x2a0 mm/slub.c:2507 qlink_free mm/kasan/quarantine.c:157 [inline] qlist_free_all+0x68/0x110 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x180/0x1f0 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x73/0x80 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] __kmalloc+0x228/0x2f0 mm/slub.c:4403 kmalloc include/linux/slab.h:609 [inline] tomoyo_realpath_from_path+0xb0/0x6d0 security/tomoyo/realpath.c:254 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x1ed/0x320 security/tomoyo/file.c:822 security_inode_getattr+0xab/0x100 security/security.c:1348 vfs_getattr fs/stat.c:157 [inline] vfs_statx+0xe8/0x2e0 fs/stat.c:225 vfs_fstatat fs/stat.c:243 [inline] __do_sys_newfstatat+0x7d/0xd0 fs/stat.c:411 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Memory state around the buggy address: ffff88811f3db780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88811f3db800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88811f3db880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ^ ffff88811f3db900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88811f3db980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================