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_le_arch+0xc7/0x1b0 arch/x86/lib/crc32-glue.c:81 Read of size 8 at addr ffff8880400aaa00 by task syz.0.0/5327 CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted 6.14.0-rc5-syzkaller-00013-g99fa936e8e4f #0 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 lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0x16e/0x5b0 mm/kasan/report.c:521 kasan_report+0x143/0x180 mm/kasan/report.c:634 crc32c_le_arch+0xc7/0x1b0 arch/x86/lib/crc32-glue.c:81 __crc32c_le include/linux/crc32.h:36 [inline] crc32c include/linux/crc32c.h:9 [inline] xlog_cksum+0x91/0xf0 fs/xfs/xfs_log.c:1588 xlog_recover_process+0x78/0x1e0 fs/xfs/xfs_log_recover.c:2900 xlog_do_recovery_pass+0xa01/0xdc0 fs/xfs/xfs_log_recover.c:3235 xlog_verify_head+0x21f/0x5a0 fs/xfs/xfs_log_recover.c:1058 xlog_find_tail+0xa04/0xdf0 fs/xfs/xfs_log_recover.c:1315 xlog_recover+0xe1/0x540 fs/xfs/xfs_log_recover.c:3419 xfs_log_mount+0x252/0x3e0 fs/xfs/xfs_log.c:666 xfs_mountfs+0xfbb/0x2500 fs/xfs/xfs_mount.c:878 xfs_fs_fill_super+0x1223/0x1550 fs/xfs/xfs_super.c:1817 get_tree_bdev_flags+0x48c/0x5c0 fs/super.c:1636 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3560 do_mount fs/namespace.c:3900 [inline] __do_sys_mount fs/namespace.c:4111 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdf0c58e90a 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:00007fdf0d36ce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fdf0d36cef0 RCX: 00007fdf0c58e90a RDX: 0000400000000500 RSI: 0000400000000200 RDI: 00007fdf0d36ceb0 RBP: 0000400000000500 R08: 00007fdf0d36cef0 R09: 0000000002218a5d R10: 0000000002218a5d R11: 0000000000000246 R12: 0000400000000200 R13: 00007fdf0d36ceb0 R14: 0000000000009706 R15: 0000400000000100 Allocated by task 5327: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4294 [inline] __kmalloc_node_noprof+0x290/0x4d0 mm/slub.c:4300 __kvmalloc_node_noprof+0x72/0x190 mm/util.c:662 xlog_do_recovery_pass+0x143/0xdc0 fs/xfs/xfs_log_recover.c:3016 xlog_verify_head+0x21f/0x5a0 fs/xfs/xfs_log_recover.c:1058 xlog_find_tail+0xa04/0xdf0 fs/xfs/xfs_log_recover.c:1315 xlog_recover+0xe1/0x540 fs/xfs/xfs_log_recover.c:3419 xfs_log_mount+0x252/0x3e0 fs/xfs/xfs_log.c:666 xfs_mountfs+0xfbb/0x2500 fs/xfs/xfs_mount.c:878 xfs_fs_fill_super+0x1223/0x1550 fs/xfs/xfs_super.c:1817 get_tree_bdev_flags+0x48c/0x5c0 fs/super.c:1636 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3560 do_mount fs/namespace.c:3900 [inline] __do_sys_mount fs/namespace.c:4111 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff8880400aa800 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 [ffff8880400aa800, ffff8880400aaa00) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x400aa head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 ksm flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000040 ffff88801b041c80 ffffea0000e84a00 dead000000000003 raw: 0000000000000000 0000000080080008 00000000f5000000 0000000000000000 head: 04fff00000000040 ffff88801b041c80 ffffea0000e84a00 dead000000000003 head: 0000000000000000 0000000080080008 00000000f5000000 0000000000000000 head: 04fff00000000001 ffffea0001002a81 ffffffffffffffff 0000000000000000 head: 0000000000000002 0000000000000000 00000000ffffffff 0000000000000000 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 1, tgid 1 (swapper/0), ts 22260198341, free_ts 22247679658 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551 prep_new_page mm/page_alloc.c:1559 [inline] get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3477 __alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4739 alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270 alloc_slab_page mm/slub.c:2423 [inline] allocate_slab+0x8f/0x3a0 mm/slub.c:2587 new_slab mm/slub.c:2640 [inline] ___slab_alloc+0xc27/0x14a0 mm/slub.c:3826 __slab_alloc+0x58/0xa0 mm/slub.c:3916 __slab_alloc_node mm/slub.c:3991 [inline] slab_alloc_node mm/slub.c:4152 [inline] __do_kmalloc_node mm/slub.c:4293 [inline] __kmalloc_node_track_caller_noprof+0x2e9/0x4c0 mm/slub.c:4313 __do_krealloc mm/slub.c:4820 [inline] krealloc_noprof+0x10f/0x300 mm/slub.c:4873 add_sysfs_param+0xca/0x820 kernel/params.c:654 kernel_add_sysfs_param+0xb4/0x130 kernel/params.c:817 param_sysfs_builtin+0x1d7/0x290 kernel/params.c:856 param_sysfs_builtin_init+0x31/0x40 kernel/params.c:990 do_one_initcall+0x248/0x930 init/main.c:1257 do_initcall_level+0x157/0x210 init/main.c:1319 do_initcalls+0x71/0xd0 init/main.c:1335 page last free pid 9 tgid 9 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_frozen_pages+0xe0d/0x10e0 mm/page_alloc.c:2660 vfree+0x1c3/0x360 mm/vmalloc.c:3383 delayed_vfree_work+0x56/0x80 mm/vmalloc.c:3303 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3319 worker_thread+0x870/0xd30 kernel/workqueue.c:3400 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Memory state around the buggy address: ffff8880400aa900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880400aa980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880400aaa00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8880400aaa80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880400aab00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================