loop0: detected capacity change from 0 to 32768 ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= XFS (loop0): Mounting V5 Filesystem bfdc47fc-10d8-4eed-a562-11a831b3f791 ================================================================== BUG: KASAN: slab-out-of-bounds in crc32c_arch lib/crc/x86/crc32.h:90 [inline] BUG: KASAN: slab-out-of-bounds in crc32c+0xd0/0x460 lib/crc/crc32-main.c:86 Read of size 8 at addr ffff8880401d8e00 by task syz.0.0/5367 CPU: 0 UID: 0 PID: 5367 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x240 mm/kasan/report.c:482 kasan_report+0x118/0x150 mm/kasan/report.c:595 crc32c_arch lib/crc/x86/crc32.h:90 [inline] crc32c+0xd0/0x460 lib/crc/crc32-main.c:86 xlog_cksum+0x92/0xf0 fs/xfs/xfs_log.c:1589 xlog_recover_process+0x7a/0x1f0 fs/xfs/xfs_log_recover.c:2900 xlog_do_recovery_pass+0x9cd/0xc30 fs/xfs/xfs_log_recover.c:3235 xlog_verify_head+0x136/0x440 fs/xfs/xfs_log_recover.c:1058 xlog_find_tail+0x5ca/0x840 fs/xfs/xfs_log_recover.c:1315 xlog_recover+0x4b/0x3e0 fs/xfs/xfs_log_recover.c:3419 xfs_log_mount+0x253/0x3e0 fs/xfs/xfs_log.c:667 xfs_mountfs+0xe5e/0x2330 fs/xfs/xfs_mount.c:1031 xfs_fs_fill_super+0x11b3/0x1600 fs/xfs/xfs_super.c:1965 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1692 vfs_get_tree+0x8f/0x2b0 fs/super.c:1815 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808 do_mount fs/namespace.c:4136 [inline] __do_sys_mount fs/namespace.c:4347 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4324 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efcd2d9034a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007efcd3cc8e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007efcd3cc8ef0 RCX: 00007efcd2d9034a RDX: 0000200000000500 RSI: 0000200000000200 RDI: 00007efcd3cc8eb0 RBP: 0000200000000500 R08: 00007efcd3cc8ef0 R09: 0000000002218a5d R10: 0000000002218a5d R11: 0000000000000246 R12: 0000200000000200 R13: 00007efcd3cc8eb0 R14: 00000000000096bf R15: 0000200000000380 Allocated by task 5367: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:388 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:405 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4376 [inline] __kvmalloc_node_noprof+0x30d/0x5f0 mm/slub.c:5067 xlog_do_recovery_pass+0x106/0xc30 fs/xfs/xfs_log_recover.c:3016 xlog_verify_head+0x136/0x440 fs/xfs/xfs_log_recover.c:1058 xlog_find_tail+0x5ca/0x840 fs/xfs/xfs_log_recover.c:1315 xlog_recover+0x4b/0x3e0 fs/xfs/xfs_log_recover.c:3419 xfs_log_mount+0x253/0x3e0 fs/xfs/xfs_log.c:667 xfs_mountfs+0xe5e/0x2330 fs/xfs/xfs_mount.c:1031 xfs_fs_fill_super+0x11b3/0x1600 fs/xfs/xfs_super.c:1965 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1692 vfs_get_tree+0x8f/0x2b0 fs/super.c:1815 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808 do_mount fs/namespace.c:4136 [inline] __do_sys_mount fs/namespace.c:4347 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4324 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff8880401d8c00 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 0 bytes to the right of allocated 512-byte region [ffff8880401d8c00, ffff8880401d8e00) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x401d8 head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000040 ffff88801a441c80 ffffea0001007e00 0000000000000002 raw: 0000000000000000 0000000080080008 00000000f5000000 0000000000000000 head: 04fff00000000040 ffff88801a441c80 ffffea0001007e00 0000000000000002 head: 0000000000000000 0000000080080008 00000000f5000000 0000000000000000 head: 04fff00000000001 ffffea0001007601 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1366, tgid 1366 (kworker/0:3), ts 80457438697, free_ts 63756268325 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1851 prep_new_page mm/page_alloc.c:1859 [inline] get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3858 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5148 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416 alloc_slab_page mm/slub.c:2492 [inline] allocate_slab+0x8a/0x370 mm/slub.c:2660 new_slab mm/slub.c:2714 [inline] ___slab_alloc+0xbeb/0x1420 mm/slub.c:3901 __slab_alloc mm/slub.c:3992 [inline] __slab_alloc_node mm/slub.c:4067 [inline] slab_alloc_node mm/slub.c:4228 [inline] __kmalloc_cache_noprof+0x296/0x3d0 mm/slub.c:4402 kmalloc_noprof include/linux/slab.h:905 [inline] drm_atomic_helper_crtc_duplicate_state+0x72/0xb0 drivers/gpu/drm/drm_atomic_state_helper.c:178 drm_atomic_get_crtc_state+0x19a/0x460 drivers/gpu/drm/drm_atomic.c:360 drm_atomic_get_plane_state+0x4c8/0x5a0 drivers/gpu/drm/drm_atomic.c:561 drm_atomic_helper_dirtyfb+0xce5/0xee0 drivers/gpu/drm/drm_damage_helper.c:173 drm_fbdev_shmem_helper_fb_dirty+0x160/0x2f0 drivers/gpu/drm/drm_fbdev_shmem.c:118 drm_fb_helper_fb_dirty drivers/gpu/drm/drm_fb_helper.c:380 [inline] drm_fb_helper_damage_work+0x224/0x710 drivers/gpu/drm/drm_fb_helper.c:403 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:463 page last free pid 5259 tgid 5259 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1395 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2895 discard_slab mm/slub.c:2758 [inline] __put_partials+0x156/0x1a0 mm/slub.c:3223 put_cpu_partial+0x17c/0x250 mm/slub.c:3298 __slab_free+0x2d5/0x3c0 mm/slub.c:4565 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:340 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4191 [inline] slab_alloc_node mm/slub.c:4240 [inline] __do_kmalloc_node mm/slub.c:4375 [inline] __kmalloc_noprof+0x224/0x4f0 mm/slub.c:4388 kmalloc_noprof include/linux/slab.h:909 [inline] tomoyo_realpath_from_path+0xe3/0x5d0 security/tomoyo/realpath.c:251 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x213/0x4b0 security/tomoyo/file.c:822 security_inode_getattr+0x12f/0x330 security/security.c:2377 vfs_getattr fs/stat.c:259 [inline] vfs_fstat fs/stat.c:281 [inline] __do_sys_newfstat fs/stat.c:555 [inline] __se_sys_newfstat fs/stat.c:550 [inline] __x64_sys_newfstat+0xfc/0x200 fs/stat.c:550 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff8880401d8d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880401d8d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880401d8e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8880401d8e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880401d8f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================