F2FS-fs (loop4): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop4): invalid crc value F2FS-fs (loop4): Mismatch valid blocks 5 vs. 6 F2FS-fs (loop4): Failed to initialize F2FS segment manager (-117) ================================================================== BUG: KASAN: slab-use-after-free in destroy_device_list fs/f2fs/super.c:1606 [inline] BUG: KASAN: slab-use-after-free in kill_f2fs_super+0x618/0x690 fs/f2fs/super.c:4932 Read of size 4 at addr ffff888098b4577c by task syz-executor.4/7875 CPU: 1 PID: 7875 Comm: syz-executor.4 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0x163/0x540 mm/kasan/report.c:488 kasan_report+0x142/0x170 mm/kasan/report.c:601 destroy_device_list fs/f2fs/super.c:1606 [inline] kill_f2fs_super+0x618/0x690 fs/f2fs/super.c:4932 deactivate_locked_super+0xc1/0x130 fs/super.c:477 mount_bdev+0x222/0x2d0 fs/super.c:1665 legacy_get_tree+0xef/0x190 fs/fs_context.c:662 vfs_get_tree+0x8c/0x2a0 fs/super.c:1784 do_new_mount+0x2be/0xb40 fs/namespace.c:3352 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f9dc3c7e4aa Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9dc4927ef8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f9dc4927f80 RCX: 00007f9dc3c7e4aa RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007f9dc4927f40 RBP: 0000000020000040 R08: 00007f9dc4927f80 R09: 0000000002000000 R10: 0000000002000000 R11: 0000000000000202 R12: 0000000020000080 R13: 00007f9dc4927f40 R14: 0000000000005522 R15: 0000000020000540 Allocated by task 7875: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x70 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:372 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389 kasan_kmalloc include/linux/kasan.h:211 [inline] kmalloc_trace+0x1d6/0x360 mm/slub.c:4012 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:711 [inline] f2fs_fill_super+0xce/0x8170 fs/f2fs/super.c:4397 mount_bdev+0x206/0x2d0 fs/super.c:1663 legacy_get_tree+0xef/0x190 fs/fs_context.c:662 vfs_get_tree+0x8c/0x2a0 fs/super.c:1784 do_new_mount+0x2be/0xb40 fs/namespace.c:3352 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Freed by task 7875: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x70 mm/kasan/common.c:68 kasan_save_free_info+0x4e/0x60 mm/kasan/generic.c:634 poison_slab_object+0xa6/0xe0 mm/kasan/common.c:241 __kasan_slab_free+0x34/0x60 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kfree+0x14a/0x380 mm/slub.c:4409 f2fs_fill_super+0x6b04/0x8170 fs/f2fs/super.c:4882 mount_bdev+0x206/0x2d0 fs/super.c:1663 legacy_get_tree+0xef/0x190 fs/fs_context.c:662 vfs_get_tree+0x8c/0x2a0 fs/super.c:1784 do_new_mount+0x2be/0xb40 fs/namespace.c:3352 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b The buggy address belongs to the object at ffff888098b44000 which belongs to the cache kmalloc-8k of size 8192 The buggy address is located 6012 bytes inside of freed 8192-byte region [ffff888098b44000, ffff888098b46000) The buggy address belongs to the physical page: page:ffffea000262d000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x98b40 head:ffffea000262d000 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000840 ffff888012c42280 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000020002 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5086, tgid 5086 (syz-executor.1), ts 223320122052, free_ts 0 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1533 prep_new_page mm/page_alloc.c:1540 [inline] get_page_from_freelist+0x33ea/0x3570 mm/page_alloc.c:3311 __alloc_pages+0x255/0x680 mm/page_alloc.c:4567 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] alloc_slab_page+0x5f/0x160 mm/slub.c:2190 allocate_slab mm/slub.c:2354 [inline] new_slab+0x84/0x2f0 mm/slub.c:2407 ___slab_alloc+0xd17/0x13d0 mm/slub.c:3540 __slab_alloc mm/slub.c:3625 [inline] __slab_alloc_node mm/slub.c:3678 [inline] slab_alloc_node mm/slub.c:3850 [inline] __do_kmalloc_node mm/slub.c:3980 [inline] __kmalloc_node+0x2d2/0x4e0 mm/slub.c:3988 kmalloc_node include/linux/slab.h:610 [inline] kvmalloc_node+0x72/0x180 mm/util.c:617 kvmalloc include/linux/slab.h:728 [inline] kvmalloc_array include/linux/slab.h:746 [inline] __ptr_ring_init_queue_alloc include/linux/ptr_ring.h:471 [inline] ptr_ring_init include/linux/ptr_ring.h:489 [inline] skb_array_init include/linux/skb_array.h:182 [inline] pfifo_fast_init+0x389/0x6d0 net/sched/sch_generic.c:859 qdisc_create_dflt+0x135/0x480 net/sched/sch_generic.c:1005 attach_one_default_qdisc net/sched/sch_generic.c:1163 [inline] netdev_for_each_tx_queue include/linux/netdevice.h:2578 [inline] attach_default_qdiscs net/sched/sch_generic.c:1181 [inline] dev_activate+0x3ba/0x1230 net/sched/sch_generic.c:1240 __dev_open+0x34c/0x440 net/core/dev.c:1455 __dev_change_flags+0x1dc/0x6f0 net/core/dev.c:8648 dev_change_flags+0x8b/0x1a0 net/core/dev.c:8720 do_setlink+0xfbf/0x43a0 net/core/rtnetlink.c:2910 __rtnl_newlink net/core/rtnetlink.c:3701 [inline] rtnl_newlink+0x17fc/0x2080 net/core/rtnetlink.c:3748 page_owner free stack trace missing Memory state around the buggy address: ffff888098b45600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888098b45680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888098b45700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888098b45780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888098b45800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================