======================================================= XFS (loop0): Mounting V5 Filesystem bfdc47fc-10d8-4eed-a562-11a831b3f791 ================================================================== BUG: KASAN: slab-out-of-bounds in crc32c_arch+0xc3/0x240 arch/x86/lib/crc32-glue.c:58 Read of size 8 at addr ffff888011e29e00 by task syz.0.16/5937 CPU: 0 UID: 0 PID: 5937 Comm: syz.0.16 Not tainted 6.15.0-rc7-syzkaller-00014-gd608703fcdd9 #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:408 [inline] print_report+0xb4/0x290 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 crc32c_arch+0xc3/0x240 arch/x86/lib/crc32-glue.c:58 crc32c include/linux/crc32.h:35 [inline] 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/0x22f0 fs/xfs/xfs_mount.c:884 xfs_fs_fill_super+0x1286/0x16d0 fs/xfs/xfs_super.c:1915 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1636 vfs_get_tree+0x8f/0x2b0 fs/super.c:1759 do_new_mount+0x24a/0xa40 fs/namespace.c:3881 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f88f5f8e90a 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:00007f88f6dabe68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f88f6dabef0 RCX: 00007f88f5f8e90a RDX: 0000400000000500 RSI: 0000400000000200 RDI: 00007f88f6dabeb0 RBP: 0000400000000500 R08: 00007f88f6dabef0 R09: 0000000002218a5d R10: 0000000002218a5d R11: 0000000000000246 R12: 0000400000000200 R13: 00007f88f6dabeb0 R14: 0000000000009706 R15: 0000400000000100 Allocated by task 5937: 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:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4327 [inline] __kvmalloc_node_noprof+0x314/0x5e0 mm/slub.c:5012 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/0x22f0 fs/xfs/xfs_mount.c:884 xfs_fs_fill_super+0x1286/0x16d0 fs/xfs/xfs_super.c:1915 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1636 vfs_get_tree+0x8f/0x2b0 fs/super.c:1759 do_new_mount+0x24a/0xa40 fs/namespace.c:3881 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff888011e29c00 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 [ffff888011e29c00, ffff888011e29e00) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11e28 head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff88801a041c80 dead000000000100 dead000000000122 raw: 0000000000000000 0000000080080008 00000000f5000000 0000000000000000 head: 00fff00000000040 ffff88801a041c80 dead000000000100 dead000000000122 head: 0000000000000000 0000000080080008 00000000f5000000 0000000000000000 head: 00fff00000000001 ffffea0000478a01 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 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5345, tgid 5345 (syz-executor), ts 95274120880, free_ts 87525805664 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1d8/0x230 mm/page_alloc.c:1714 prep_new_page mm/page_alloc.c:1722 [inline] get_page_from_freelist+0x21ce/0x22b0 mm/page_alloc.c:3684 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4966 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2301 alloc_slab_page mm/slub.c:2450 [inline] allocate_slab+0x8a/0x3b0 mm/slub.c:2618 new_slab mm/slub.c:2672 [inline] ___slab_alloc+0xbfc/0x1480 mm/slub.c:3858 __slab_alloc mm/slub.c:3948 [inline] __slab_alloc_node mm/slub.c:4023 [inline] slab_alloc_node mm/slub.c:4184 [inline] __do_kmalloc_node mm/slub.c:4326 [inline] __kmalloc_noprof+0x305/0x4f0 mm/slub.c:4339 kmalloc_noprof include/linux/slab.h:909 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] fib6_info_alloc+0x30/0xf0 net/ipv6/ip6_fib.c:155 ip6_route_info_create+0x4b3/0x1360 net/ipv6/route.c:3802 ip6_route_add+0x28/0x160 net/ipv6/route.c:3896 addrconf_prefix_route net/ipv6/addrconf.c:2487 [inline] fixup_permanent_addr net/ipv6/addrconf.c:3602 [inline] addrconf_permanent_addr+0x67f/0x9d0 net/ipv6/addrconf.c:3626 addrconf_notify+0x887/0x1010 net/ipv6/addrconf.c:3698 notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2214 [inline] call_netdevice_notifiers net/core/dev.c:2228 [inline] __dev_notify_flags+0x18d/0x2e0 net/core/dev.c:-1 netif_change_flags+0xe8/0x1a0 net/core/dev.c:9422 do_setlink+0xcb9/0x40d0 net/core/rtnetlink.c:3152 page last free pid 4723 tgid 4723 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1258 [inline] __free_frozen_pages+0xb0e/0xcd0 mm/page_alloc.c:2721 __slab_free+0x326/0x400 mm/slub.c:4553 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/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:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4147 [inline] slab_alloc_node mm/slub.c:4196 [inline] __do_kmalloc_node mm/slub.c:4326 [inline] __kmalloc_noprof+0x224/0x4f0 mm/slub.c:4339 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:256 [inline] vfs_statx_path fs/stat.c:296 [inline] vfs_statx+0x153/0x550 fs/stat.c:353 vfs_fstatat+0xe4/0x160 fs/stat.c:372 __do_sys_newfstatat fs/stat.c:536 [inline] __se_sys_newfstatat fs/stat.c:530 [inline] __x64_sys_newfstatat+0x11c/0x1a0 fs/stat.c:530 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff888011e29d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888011e29d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888011e29e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888011e29e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888011e29f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================