EXT4-fs (loop0): ext4_check_descriptors: Block bitmap for group 0 overlaps block group descriptors
EXT4-fs (loop0): ext4_check_descriptors: Checksum for group 0 failed (14919!=20869)
==================================================================
BUG: KASAN: use-after-free in check_igot_inode fs/ext4/inode.c:-1 [inline]
BUG: KASAN: use-after-free in __ext4_iget+0x3a0/0x41f0 fs/ext4/inode.c:4766
Read of size 8 at addr ffff888128de9ee8 by task syz.0.380/1219

CPU: 0 PID: 1219 Comm: syz.0.380 Not tainted 5.10.236-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118
 print_address_description+0x81/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0x179/0x1c0 mm/kasan/report.c:452
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
 check_igot_inode fs/ext4/inode.c:-1 [inline]
 __ext4_iget+0x3a0/0x41f0 fs/ext4/inode.c:4766
 ext4_get_journal_inode+0x33/0x1d0 fs/ext4/super.c:5243
 ext4_calculate_overhead+0xde2/0x1100 fs/ext4/super.c:3967
 ext4_fill_super+0x7248/0x9150 fs/ext4/super.c:4933
 mount_bdev+0x262/0x370 fs/super.c:1442
 ext4_mount+0x34/0x40 fs/ext4/super.c:6645
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593
 vfs_get_tree+0x88/0x290 fs/super.c:1572
 do_new_mount+0x2ba/0xb30 fs/namespace.c:2917
 path_mount+0x56f/0xcb0 fs/namespace.c:3247
 do_mount fs/namespace.c:3260 [inline]
 __do_sys_mount fs/namespace.c:3468 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3445
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3445
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f9d2786f10a
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:00007f9d25ed5e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9d25ed5ef0 RCX: 00007f9d2786f10a
RDX: 00002000000000c0 RSI: 0000200000000040 RDI: 00007f9d25ed5eb0
RBP: 00002000000000c0 R08: 00007f9d25ed5ef0 R09: 0000000000000011
R10: 0000000000000011 R11: 0000000000000246 R12: 0000200000000040
R13: 00007f9d25ed5eb0 R14: 00000000000005fb R15: 0000200000000100

Allocated by task 1047:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:430 [inline]
 __kasan_slab_alloc+0xb1/0xe0 mm/kasan/common.c:463
 kasan_slab_alloc include/linux/kasan.h:244 [inline]
 slab_post_alloc_hook+0x61/0x2f0 mm/slab.h:583
 slab_alloc_node mm/slub.c:2947 [inline]
 slab_alloc mm/slub.c:2955 [inline]
 kmem_cache_alloc+0x168/0x2e0 mm/slub.c:2960
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2779 [inline]
 f2fs_alloc_inode+0x26/0x420 fs/f2fs/super.c:1373
 alloc_inode fs/inode.c:233 [inline]
 iget_locked+0x14f/0x870 fs/inode.c:1275
 f2fs_iget+0x55/0x50a0 fs/f2fs/inode.c:498
 f2fs_fill_super+0x6459/0x7d90 fs/f2fs/super.c:4309
 mount_bdev+0x262/0x370 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4548
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593
 vfs_get_tree+0x88/0x290 fs/super.c:1572
 do_new_mount+0x2ba/0xb30 fs/namespace.c:2917
 path_mount+0x56f/0xcb0 fs/namespace.c:3247
 do_mount fs/namespace.c:3260 [inline]
 __do_sys_mount fs/namespace.c:3468 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3445
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3445
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Freed by task 19:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x121/0x160 mm/kasan/common.c:362
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:370
 kasan_slab_free include/linux/kasan.h:220 [inline]
 slab_free_hook mm/slub.c:1595 [inline]
 slab_free_freelist_hook+0xc0/0x190 mm/slub.c:1621
 slab_free mm/slub.c:3203 [inline]
 kmem_cache_free+0xa9/0x1e0 mm/slub.c:3219
 f2fs_free_inode+0x24/0x30 fs/f2fs/super.c:1528
 i_callback+0x4b/0x70 fs/inode.c:222
 rcu_do_batch+0x597/0xc40 kernel/rcu/tree.c:2494
 rcu_core+0x5ad/0xe40 kernel/rcu/tree.c:2735
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2748
 __do_softirq+0x268/0x5bb kernel/softirq.c:309

Last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd3/0x100 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 __call_rcu kernel/rcu/tree.c:2976 [inline]
 call_rcu+0x135/0x11f0 kernel/rcu/tree.c:3050
 destroy_inode fs/inode.c:288 [inline]
 evict+0x8e8/0x9c0 fs/inode.c:629
 dispose_list fs/inode.c:647 [inline]
 evict_inodes+0x638/0x6c0 fs/inode.c:701
 generic_shutdown_super+0x97/0x320 fs/super.c:454
 kill_block_super+0x7e/0xe0 fs/super.c:1469
 kill_f2fs_super+0x2f9/0x3c0 fs/f2fs/super.c:4580
 deactivate_locked_super+0xad/0x110 fs/super.c:335
 deactivate_super+0xbe/0xf0 fs/super.c:366
 cleanup_mnt+0x45c/0x510 fs/namespace.c:1118
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125
 task_work_run+0x129/0x190 kernel/task_work.c:189
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xbf/0xd0 kernel/entry/common.c:172
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 syscall_exit_to_user_mode+0xa2/0x1a0 kernel/entry/common.c:274
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

The buggy address belongs to the object at ffff888128de99c0
 which belongs to the cache f2fs_inode_cache of size 1520
The buggy address is located 1320 bytes inside of
 1520-byte region [ffff888128de99c0, ffff888128de9fb0)
The buggy address belongs to the page:
page:ffffea0004a37a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x128de8
head:ffffea0004a37a00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff888102795680
raw: 0000000000000000 0000000080130013 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 921, ts 43203694051, free_ts 0
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x166/0x180 mm/page_alloc.c:2462
 get_page_from_freelist+0x2d8c/0x2f30 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x435/0xaf0 mm/page_alloc.c:5349
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1808 [inline]
 new_slab+0x80/0x400 mm/slub.c:1869
 new_slab_objects mm/slub.c:2627 [inline]
 ___slab_alloc+0x302/0x4b0 mm/slub.c:2791
 __slab_alloc+0x63/0xa0 mm/slub.c:2831
 slab_alloc_node mm/slub.c:2913 [inline]
 slab_alloc mm/slub.c:2955 [inline]
 kmem_cache_alloc+0x1b9/0x2e0 mm/slub.c:2960
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2779 [inline]
 f2fs_alloc_inode+0x26/0x420 fs/f2fs/super.c:1373
 alloc_inode fs/inode.c:233 [inline]
 iget_locked+0x14f/0x870 fs/inode.c:1275
 f2fs_iget+0x55/0x50a0 fs/f2fs/inode.c:498
 f2fs_fill_super+0x63b6/0x7d90 fs/f2fs/super.c:4301
 mount_bdev+0x262/0x370 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4548
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593
 vfs_get_tree+0x88/0x290 fs/super.c:1572
 do_new_mount+0x2ba/0xb30 fs/namespace.c:2917
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888128de9d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888128de9e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888128de9e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                          ^
 ffff888128de9f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888128de9f80: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
==================================================================
EXT4-fs (loop0): invalid journal inode
EXT4-fs (loop0): can't get journal size
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:585!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1219 Comm: syz.0.380 Tainted: G    B             5.10.236-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:ext4_map_blocks+0x1d04/0x1d10 fs/ext4/inode.c:585
Code: 4c 24 10 80 e1 07 80 c1 03 38 c1 0f 8c 6b f7 ff ff 48 8b 7c 24 10 e8 7b c9 cb ff e9 5c f7 ff ff e8 c1 46 d1 02 e8 7c 2a 8e ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 53 48 89 fb e8 63
RSP: 0018:ffffc90000da76c0 EFLAGS: 00010246
RAX: ffffffff81dc9574 RBX: ffffc90000da78c0 RCX: 0000000000080000
RDX: ffffc9000154b000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90000da7830 R08: ffffffff81dc7af3 R09: ffffed10251bd469
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888128dea030
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f9d25ed66c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ad187b178 CR3: 000000011b2bc000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_protect_reserved_inode fs/ext4/block_validity.c:168 [inline]
 ext4_setup_system_zone+0x7a6/0xb80 fs/ext4/block_validity.c:253
 ext4_fill_super+0x7a19/0x9150 fs/ext4/super.c:4985
 mount_bdev+0x262/0x370 fs/super.c:1442
 ext4_mount+0x34/0x40 fs/ext4/super.c:6645
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593
 vfs_get_tree+0x88/0x290 fs/super.c:1572
 do_new_mount+0x2ba/0xb30 fs/namespace.c:2917
 path_mount+0x56f/0xcb0 fs/namespace.c:3247
 do_mount fs/namespace.c:3260 [inline]
 __do_sys_mount fs/namespace.c:3468 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3445
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3445
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f9d2786f10a
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:00007f9d25ed5e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9d25ed5ef0 RCX: 00007f9d2786f10a
RDX: 00002000000000c0 RSI: 0000200000000040 RDI: 00007f9d25ed5eb0
RBP: 00002000000000c0 R08: 00007f9d25ed5ef0 R09: 0000000000000011
R10: 0000000000000011 R11: 0000000000000246 R12: 0000200000000040
R13: 00007f9d25ed5eb0 R14: 00000000000005fb R15: 0000200000000100
Modules linked in:
---[ end trace 0b8080411e323563 ]---
RIP: 0010:ext4_map_blocks+0x1d04/0x1d10 fs/ext4/inode.c:585
Code: 4c 24 10 80 e1 07 80 c1 03 38 c1 0f 8c 6b f7 ff ff 48 8b 7c 24 10 e8 7b c9 cb ff e9 5c f7 ff ff e8 c1 46 d1 02 e8 7c 2a 8e ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 53 48 89 fb e8 63
RSP: 0018:ffffc90000da76c0 EFLAGS: 00010246
RAX: ffffffff81dc9574 RBX: ffffc90000da78c0 RCX: 0000000000080000
RDX: ffffc9000154b000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90000da7830 R08: ffffffff81dc7af3 R09: ffffed10251bd469
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888128dea030
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f9d25ed66c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ad187b178 CR3: 000000011b2bc000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400