F2FS-fs (loop2): Mismatch start address, segment0(512) cp_blkaddr(605) F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop2): invalid crc value F2FS-fs (loop2): Failed to initialize F2FS segment manager (-4) ================================================================== BUG: KASAN: slab-use-after-free in destroy_device_list+0x195/0x200 fs/f2fs/super.c:1606 Read of size 4 at addr ffff88808054977c by task syz-executor.2/10720 CPU: 0 PID: 10720 Comm: syz-executor.2 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+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 destroy_device_list+0x195/0x200 fs/f2fs/super.c:1606 kill_f2fs_super+0x2c6/0x430 fs/f2fs/super.c:4932 deactivate_locked_super+0xbc/0x1a0 fs/super.c:477 mount_bdev+0x277/0x2d0 fs/super.c:1665 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8c/0x370 fs/super.c:1784 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x14e6/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3875 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f162c07e4aa 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:00007f162cddeef8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f162cddef80 RCX: 00007f162c07e4aa RDX: 00000000200000c0 RSI: 0000000020008300 RDI: 00007f162cddef40 RBP: 00000000200000c0 R08: 00007f162cddef80 R09: 0000000000000010 R10: 0000000000000010 R11: 0000000000000202 R12: 0000000020008300 R13: 00007f162cddef40 R14: 0000000000007e64 R15: 0000000020007f80 Allocated by task 10720: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:372 [inline] __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:389 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:711 [inline] f2fs_fill_super+0xfe/0x8e50 fs/f2fs/super.c:4397 mount_bdev+0x1df/0x2d0 fs/super.c:1663 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8c/0x370 fs/super.c:1784 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x14e6/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3875 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Freed by task 10720: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:634 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x121/0x1b0 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+0x124/0x360 mm/slub.c:4409 f2fs_fill_super+0x270c/0x8e50 fs/f2fs/super.c:4882 mount_bdev+0x1df/0x2d0 fs/super.c:1663 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8c/0x370 fs/super.c:1784 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x14e6/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3875 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b The buggy address belongs to the object at ffff888080548000 which belongs to the cache kmalloc-8k of size 8192 The buggy address is located 6012 bytes inside of freed 8192-byte region [ffff888080548000, ffff88808054a000) The buggy address belongs to the physical page: page:ffffea0002015200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x80548 head:ffffea0002015200 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000840 ffff888013042280 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080020002 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 10449, tgid 10448 (syz-executor.4), ts 1511976050477, free_ts 1511673176356 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1533 prep_new_page mm/page_alloc.c:1540 [inline] get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3311 __alloc_pages+0x22f/0x2440 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 mm/slub.c:2190 [inline] allocate_slab mm/slub.c:2354 [inline] new_slab+0xcc/0x3a0 mm/slub.c:2407 ___slab_alloc+0x4af/0x19a0 mm/slub.c:3540 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3625 __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+0x35d/0x460 mm/slub.c:3988 kmalloc_node include/linux/slab.h:610 [inline] kvmalloc_node+0x6f/0x1a0 mm/util.c:617 kvmalloc include/linux/slab.h:728 [inline] kvzalloc include/linux/slab.h:736 [inline] snd_pcm_plugin_alloc+0x5dd/0x7d0 sound/core/oss/pcm_plugin.c:74 snd_pcm_plug_alloc+0x143/0x320 sound/core/oss/pcm_plugin.c:133 snd_pcm_oss_change_params_locked+0x1961/0x3ac0 sound/core/oss/pcm_oss.c:1052 snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1116 [inline] snd_pcm_oss_make_ready+0xe2/0x1a0 sound/core/oss/pcm_oss.c:1175 snd_pcm_oss_sync+0x1d7/0x7f0 sound/core/oss/pcm_oss.c:1742 snd_pcm_oss_ioctl+0x114c/0x3790 sound/core/oss/pcm_oss.c:2634 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 page last free pid 5090 tgid 5090 stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1140 [inline] free_unref_page_prepare+0x51f/0xb10 mm/page_alloc.c:2346 free_unref_page+0x33/0x3c0 mm/page_alloc.c:2486 __put_partials+0x14c/0x160 mm/slub.c:2922 qlink_free mm/kasan/quarantine.c:160 [inline] qlist_free_all+0x58/0x150 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:324 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3813 [inline] slab_alloc_node mm/slub.c:3860 [inline] __do_kmalloc_node mm/slub.c:3980 [inline] __kmalloc+0x1bd/0x440 mm/slub.c:3994 kmalloc_array include/linux/slab.h:627 [inline] kcalloc include/linux/slab.h:658 [inline] ext4_ext_remove_space+0x1a82/0x43a0 fs/ext4/extents.c:2938 ext4_ext_truncate+0x243/0x2e0 fs/ext4/extents.c:4408 ext4_truncate+0xd81/0x1310 fs/ext4/inode.c:4176 ext4_evict_inode+0x7a3/0x1a40 fs/ext4/inode.c:258 evict+0x2ed/0x6b0 fs/inode.c:665 iput_final fs/inode.c:1739 [inline] iput.part.0+0x560/0x7b0 fs/inode.c:1765 iput+0x5c/0x80 fs/inode.c:1755 d_delete_notify include/linux/fsnotify.h:282 [inline] vfs_rmdir fs/namei.c:4218 [inline] vfs_rmdir+0x454/0x650 fs/namei.c:4182 do_rmdir+0x39e/0x410 fs/namei.c:4264 Memory state around the buggy address: ffff888080549600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888080549680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888080549700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888080549780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888080549800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================