======================================================= 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 ffff88804036be00 by task syz.0.16/5942 CPU: 0 UID: 0 PID: 5942 Comm: syz.0.16 Not tainted 6.16.0-syzkaller-g260f6f4fda93 #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:1012 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:3805 do_mount fs/namespace.c:4133 [inline] __do_sys_mount fs/namespace.c:4344 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4321 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: 0033:0x7f960778e90a 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:00007f9608543e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f9608543ef0 RCX: 00007f960778e90a RDX: 0000400000000500 RSI: 0000400000000200 RDI: 00007f9608543eb0 RBP: 0000400000000500 R08: 00007f9608543ef0 R09: 0000000002218a5d R10: 0000000002218a5d R11: 0000000000000246 R12: 0000400000000200 R13: 00007f9608543eb0 R14: 0000000000009706 R15: 0000400000000100 Allocated by task 5942: 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:4364 [inline] __kvmalloc_node_noprof+0x30d/0x5f0 mm/slub.c:5051 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:1012 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:3805 do_mount fs/namespace.c:4133 [inline] __do_sys_mount fs/namespace.c:4344 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4321 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 ffff88804036bc00 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 [ffff88804036bc00, ffff88804036be00) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4036a head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000040 ffff88801a441c80 0000000000000000 dead000000000001 raw: 0000000000000000 0000000080080008 00000000f5000000 0000000000000000 head: 04fff00000000040 ffff88801a441c80 0000000000000000 dead000000000001 head: 0000000000000000 0000000080080008 00000000f5000000 0000000000000000 head: 04fff00000000001 ffffea000100da81 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 5787, tgid 5787 (syz-executor), ts 147896329212, free_ts 144777864184 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704 prep_new_page mm/page_alloc.c:1712 [inline] get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419 alloc_slab_page mm/slub.c:2486 [inline] allocate_slab+0x8a/0x370 mm/slub.c:2654 new_slab mm/slub.c:2708 [inline] ___slab_alloc+0xbeb/0x1410 mm/slub.c:3890 __slab_alloc mm/slub.c:3980 [inline] __slab_alloc_node mm/slub.c:4055 [inline] slab_alloc_node mm/slub.c:4216 [inline] __kmalloc_cache_noprof+0x296/0x3d0 mm/slub.c:4390 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] mca_alloc net/ipv6/mcast.c:876 [inline] __ipv6_dev_mc_inc+0x44f/0xa50 net/ipv6/mcast.c:966 ipv6_add_dev+0xe63/0x1370 net/ipv6/addrconf.c:475 addrconf_notify+0x794/0x1010 net/ipv6/addrconf.c:3650 notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2267 [inline] call_netdevice_notifiers net/core/dev.c:2281 [inline] register_netdevice+0x1608/0x1ae0 net/core/dev.c:11235 veth_newlink+0x42f/0xa50 drivers/net/veth.c:1855 rtnl_newlink_create+0x310/0xb00 net/core/rtnetlink.c:3825 __rtnl_newlink net/core/rtnetlink.c:3942 [inline] rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4057 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6946 page last free pid 5742 tgid 5742 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1248 [inline] __free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706 vfree+0x25a/0x400 mm/vmalloc.c:3434 kcov_put kernel/kcov.c:439 [inline] kcov_close+0x28/0x50 kernel/kcov.c:535 __fput+0x44c/0xa70 fs/file_table.c:468 task_work_run+0x1d1/0x260 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x6b5/0x2300 kernel/exit.c:964 do_group_exit+0x21c/0x2d0 kernel/exit.c:1105 get_signal+0x1286/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:40 exit_to_user_mode_prepare include/linux/irq-entry-common.h:224 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff88804036bd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88804036bd80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88804036be00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88804036be80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88804036bf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================