EXT4-fs error (device loop0): ext4_ext_check_inode:500: inode #17: comm syz-executor233: pblk 0 bad header/extent: invalid magic - magic 0, entries 0, max 0(0), depth 0(0)
EXT4-fs error (device loop0): ext4_ext_check_inode:500: inode #17: comm syz-executor233: pblk 0 bad header/extent: invalid magic - magic 0, entries 0, max 0(0), depth 0(0)
==================================================================
BUG: KASAN: use-after-free in ext4_ext_rm_leaf fs/ext4/extents.c:2594 [inline]
BUG: KASAN: use-after-free in ext4_ext_remove_space+0x3da3/0x4e10 fs/ext4/extents.c:2932
Read of size 4 at addr ffff8881190014a8 by task syz-executor233/287

CPU: 1 PID: 287 Comm: syz-executor233 Not tainted 5.10.232-syzkaller-00746-g49e8ba0a684f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
 ext4_ext_rm_leaf fs/ext4/extents.c:2594 [inline]
 ext4_ext_remove_space+0x3da3/0x4e10 fs/ext4/extents.c:2932
 ext4_ext_truncate+0x17f/0x200 fs/ext4/extents.c:4465
 ext4_truncate+0xb19/0x1220 fs/ext4/inode.c:4366
 ext4_evict_inode+0xf07/0x1730 fs/ext4/inode.c:290
 evict+0x526/0x9c0 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x632/0x7e0 fs/inode.c:1762
 dentry_unlink_inode+0x2ea/0x3d0 fs/dcache.c:378
 __dentry_kill+0x447/0x650 fs/dcache.c:583
 shrink_dentry_list+0x38a/0x4e0 fs/dcache.c:1146
 shrink_dcache_parent+0xc9/0x340
 do_one_tree+0x28/0x4a0 fs/dcache.c:1627
 shrink_dcache_for_umount+0x7d/0x120 fs/dcache.c:1644
 generic_shutdown_super+0x66/0x320 fs/super.c:447
 kill_block_super+0x7e/0xe0 fs/super.c:1469
 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
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xc83/0x2a50 kernel/exit.c:863
 do_group_exit+0x141/0x310 kernel/exit.c:985
 __do_sys_exit_group kernel/exit.c:996 [inline]
 __se_sys_exit_group kernel/exit.c:994 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:994
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f9c46383b69
Code: Unable to access opcode bytes at RIP 0x7f9c46383b3f.
RSP: 002b:00007ffffe425be8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f9c46383b69
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 00007f9c46402150 R08: ffffffffffffffb8 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000246 R12: 00007f9c46402150
R13: 0000000000000000 R14: 00007f9c46404f80 R15: 00007f9c46348a60

Allocated by task 129:
 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
 vm_area_dup+0x26/0x270 kernel/fork.c:366
 __split_vma+0xbd/0x420 mm/mmap.c:2860
 split_vma+0x7c/0xd0 mm/mmap.c:2919
 mprotect_fixup+0x582/0x860 mm/mprotect.c:474
 do_mprotect_pkey+0x731/0x990 mm/mprotect.c:622
 __do_sys_mprotect mm/mprotect.c:647 [inline]
 __se_sys_mprotect mm/mprotect.c:644 [inline]
 __x64_sys_mprotect+0x80/0x90 mm/mprotect.c:644
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Freed by task 129:
 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
 vm_area_free+0x52/0xf0 kernel/fork.c:386
 __free_vma mm/mmap.c:179 [inline]
 put_vma mm/mmap.c:186 [inline]
 remove_vma mm/mmap.c:204 [inline]
 exit_mmap+0x431/0x560 mm/mmap.c:3381
 __mmput+0x95/0x2d0 kernel/fork.c:1153
 mmput+0x59/0x170 kernel/fork.c:1176
 exit_mm kernel/exit.c:539 [inline]
 do_exit+0xbda/0x2a50 kernel/exit.c:850
 do_group_exit+0x141/0x310 kernel/exit.c:985
 __do_sys_exit_group kernel/exit.c:996 [inline]
 __se_sys_exit_group kernel/exit.c:994 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:994
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

The buggy address belongs to the object at ffff8881190014a0
 which belongs to the cache vm_area_struct of size 232
The buggy address is located 8 bytes inside of
 232-byte region [ffff8881190014a0, ffff888119001588)
The buggy address belongs to the page:
page:ffffea0004640040 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x119001
flags: 0x4000000000000200(slab)
raw: 4000000000000200 dead000000000100 dead000000000122 ffff888100188600
raw: 0000000000000000 00000000000d000d 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 129, ts 4765381737, free_ts 4763796740
 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:5348
 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
 vm_area_dup+0x26/0x270 kernel/fork.c:366
 __split_vma+0xbd/0x420 mm/mmap.c:2860
 __do_munmap+0x412/0x8c0 mm/mmap.c:2986
 do_munmap mm/mmap.c:3040 [inline]
 munmap_vma_range mm/mmap.c:638 [inline]
 __mmap_region mm/mmap.c:1822 [inline]
 mmap_region+0xa31/0x1cd0 mm/mmap.c:3063
 do_mmap+0x800/0xeb0 mm/mmap.c:1649
 vm_mmap_pgoff+0x201/0x390 mm/util.c:543
 ksys_mmap_pgoff+0x16f/0x1f0 mm/mmap.c:1700
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:95 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline]
 __x64_sys_mmap+0x103/0x120 arch/x86/kernel/sys_x86_64.c:86
 do_syscall_64+0x34/0x70
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1349 [inline]
 free_pcp_prepare mm/page_alloc.c:1421 [inline]
 free_unref_page_prepare+0x2ae/0x2d0 mm/page_alloc.c:3336
 free_unref_page_list+0x122/0xb20 mm/page_alloc.c:3443
 release_pages+0xea0/0xef0 mm/swap.c:1103
 free_pages_and_swap_cache+0x8a/0xa0 mm/swap_state.c:356
 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:240 [inline]
 tlb_flush_mmu mm/mmu_gather.c:247 [inline]
 tlb_finish_mmu+0x177/0x320 mm/mmu_gather.c:326
 exit_mmap+0x306/0x560 mm/mmap.c:3375
 __mmput+0x95/0x2d0 kernel/fork.c:1153
 mmput+0x59/0x170 kernel/fork.c:1176
 exec_mmap fs/exec.c:1040 [inline]
 begin_new_exec+0xb8d/0x2380 fs/exec.c:1287
 load_elf_binary+0x945/0x2750 fs/binfmt_elf.c:1001
 search_binary_handler fs/exec.c:1726 [inline]
 exec_binprm fs/exec.c:1767 [inline]
 bprm_execve+0x81b/0x1600 fs/exec.c:1843
 do_execveat_common+0x959/0xac0 fs/exec.c:1954
 do_execve fs/exec.c:2024 [inline]
 __do_sys_execve fs/exec.c:2100 [inline]
 __se_sys_execve fs/exec.c:2095 [inline]
 __x64_sys_execve+0x92/0xb0 fs/exec.c:2095
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Memory state around the buggy address:
 ffff888119001380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888119001400: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff888119001480: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb
                                  ^
 ffff888119001500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888119001580: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb
==================================================================
EXT4-fs error (device loop0): ext4_free_blocks:5685: comm syz-executor233: Freeing blocks not in datazone - block = 269380761873296, count = 206
EXT4-fs error (device loop0):