program:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file1\x00', 0x446, &(0x7f0000000080)={[{@stripe={'stripe', 0x3d, 0x2}}, {@journal_dev={'journal_dev', 0x3d, 0x1045}}, {@oldalloc}, {@noquota}, {@minixdf}, {@barrier_val={'barrier', 0x3d, 0x2}}, {@delalloc}, {@nojournal_checksum}, {@orlov}, {@user_xattr}, {@quota}, {@delalloc}]}, 0x1, 0x553, &(0x7f0000001080)="$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")
r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
syz_mount_image$ext4(&(0x7f0000000b80)='ext4\x00', &(0x7f0000000bc0)='./file0\x00', 0x0, &(0x7f0000000c00), 0x1, 0xb80, &(0x7f0000000c40)="$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")
r1 = open(&(0x7f0000000180)='./bus\x00', 0x14927e, 0x0)
quotactl_fd$Q_GETFMT(r1, 0xffffffff80000400, 0x0, &(0x7f00000000c0))
pwrite64(r0, &(0x7f0000000140)='2', 0x1, 0x8000c61)
r2 = openat(r0, &(0x7f0000000080)='./file1\x00', 0x42, 0x11)
r3 = creat(&(0x7f0000000640)='./bus\x00', 0x1a8)
r4 = openat$vicodec0(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$VIDIOC_S_FMT(r4, 0xc0d05605, &(0x7f0000000100)={0xa, @pix={0x7, 0x3, 0x31364d4e, 0x1, 0x800000c0, 0x4, 0x2, 0x3, 0x0, 0x8, 0x3, 0x3}})
r5 = openat$vicodec0(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
ioctl$VIDIOC_REQBUFS(r5, 0xc0145608, &(0x7f0000000040)={0x201, 0xa, 0x2})
close_range(r3, 0xffffffffffffffff, 0x0)
mmap(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x27ffff7, 0x4012011, r2, 0x0)
bpf$BPF_PROG_WITH_BTFID_LOAD(0x5, &(0x7f0000000300)=@bpf_lsm={0xd, 0x5, &(0x7f0000000040)=@framed={{0x15, 0xa, 0x0, 0x0, 0x0, 0x61, 0x11, 0x78}, [@initr0]}, &(0x7f0000000000)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x5}, 0x90)
r6 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x35)
pwrite64(r6, &(0x7f0000000140)='2', 0xfdef, 0xfecc)
setxattr$trusted_overlay_upper(&(0x7f0000000000)='./file1\x00', &(0x7f0000000500), &(0x7f0000001040)=ANY=[], 0x841, 0x0)
r7 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file1\x00', 0x42, 0x0)
write$FUSE_WRITE(r7, &(0x7f00000000c0)={0x18}, 0xfffffdef)
[ 76.091847][ T5309] Bluetooth: hci0: command tx timeout
[ 76.161060][ T5332] loop0: detected capacity change from 0 to 1024
[ 76.196690][ T5332] =======================================================
[ 76.196690][ T5332] WARNING: The mand mount option has been deprecated and
[ 76.196690][ T5332] and is ignored by this kernel. Remove the mand
[ 76.196690][ T5332] option from the mount to silence this warning.
[ 76.196690][ T5332] =======================================================
[ 76.252293][ T5332] EXT4-fs: Ignoring removed oldalloc option
[ 76.254615][ T5332] EXT4-fs: Ignoring removed orlov option
[ 76.283825][ T5332] EXT4-fs (loop0): stripe (2) is not aligned with cluster size (16), stripe is disabled
[ 76.320665][ T5332] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 76.395244][ T5332] ==================================================================
[ 76.398843][ T5332] BUG: KASAN: use-after-free in ext4_find_extent+0xae6/0xcc0
[ 76.402130][ T5332] Read of size 4 at addr ffff8880559f0130 by task syz.0.0/5332
[ 76.405397][ T5332]
[ 76.406467][ T5332] CPU: 0 UID: 0 PID: 5332 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 76.406480][ T5332] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
[ 76.406487][ T5332] Call Trace:
[ 76.406494][ T5332]
[ 76.406499][ T5332] dump_stack_lvl+0xe8/0x150
[ 76.406517][ T5332] print_report+0xca/0x240
[ 76.406528][ T5332] ? ext4_find_extent+0xae6/0xcc0
[ 76.406542][ T5332] kasan_report+0x118/0x150
[ 76.406554][ T5332] ? ext4_find_extent+0xae6/0xcc0
[ 76.406567][ T5332] ext4_find_extent+0xae6/0xcc0
[ 76.406582][ T5332] ext4_ext_map_blocks+0x278/0x69c0
[ 76.406606][ T5332] ? ext4_map_blocks+0x73f/0x16f0
[ 76.406615][ T5332] ? __pfx_ext4_ext_map_blocks+0x10/0x10
[ 76.406632][ T5332] ? ext4_es_lookup_extent+0x6cd/0xb00
[ 76.406644][ T5332] ext4_map_blocks+0x82c/0x16f0
[ 76.406657][ T5332] ? __pfx_ext4_map_blocks+0x10/0x10
[ 76.406666][ T5332] ? __lock_acquire+0x6b6/0x2cf0
[ 76.406678][ T5332] ? trace_contention_end+0x39/0x100
[ 76.406689][ T5332] ? __bfs+0x154/0x290
[ 76.406697][ T5332] ? __pfx_hlock_conflict+0x10/0x10
[ 76.406709][ T5332] _ext4_get_block+0x1fa/0x4c0
[ 76.406718][ T5332] ? __pfx__ext4_get_block+0x10/0x10
[ 76.406728][ T5332] ? filemap_get_entry+0xad/0x2f0
[ 76.406742][ T5332] ext4_get_block_unwritten+0x2e/0x100
[ 76.406752][ T5332] ext4_block_write_begin+0xb03/0x1940
[ 76.406765][ T5332] ? __pfx_ext4_get_block_unwritten+0x10/0x10
[ 76.406774][ T5332] ? __pfx_ext4_block_write_begin+0x10/0x10
[ 76.406784][ T5332] ? folio_mapping+0x16f/0x1f0
[ 76.406793][ T5332] ? ext4_inode_journal_mode+0x193/0x470
[ 76.406806][ T5332] ext4_write_begin+0xb3a/0x1860
[ 76.406827][ T5332] ? __pfx_ext4_write_begin+0x10/0x10
[ 76.406840][ T5332] ? __ext4_handle_dirty_metadata+0x2fd/0x810
[ 76.406854][ T5332] ext4_da_write_begin+0x352/0xd30
[ 76.406873][ T5332] ? __pfx_ext4_da_write_begin+0x10/0x10
[ 76.406888][ T5332] generic_perform_write+0x2c5/0x900
[ 76.406901][ T5332] ? __pfx_generic_perform_write+0x10/0x10
[ 76.406910][ T5332] ? file_update_time_flags+0x448/0x4e0
[ 76.406925][ T5332] ? ext4_write_checks+0x24b/0x2c0
[ 76.406938][ T5332] ext4_buffered_write_iter+0xce/0x3a0
[ 76.406950][ T5332] ext4_file_write_iter+0x292/0x1bc0
[ 76.406965][ T5332] ? vfs_write+0x211/0xb30
[ 76.406979][ T5332] ? vfs_write+0x211/0xb30
[ 76.406990][ T5332] ? __pfx_ext4_file_write_iter+0x10/0x10
[ 76.407006][ T5332] vfs_write+0x5c9/0xb30
[ 76.407020][ T5332] ? __pfx_ext4_file_write_iter+0x10/0x10
[ 76.407030][ T5332] ? __pfx_vfs_write+0x10/0x10
[ 76.407044][ T5332] ? __fget_files+0x2a/0x420
[ 76.407056][ T5332] ksys_write+0x145/0x250
[ 76.407070][ T5332] ? __pfx_ksys_write+0x10/0x10
[ 76.407086][ T5332] do_syscall_64+0xec/0xf80
[ 76.407143][ T5332] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 76.407154][ T5332] ? trace_irq_disable+0x37/0x100
[ 76.407168][ T5332] ? clear_bhb_loop+0x60/0xb0
[ 76.407181][ T5332] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 76.407192][ T5332] RIP: 0033:0x7efc6b58f7c9
[ 76.407205][ T5332] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 76.407214][ T5332] RSP: 002b:00007efc6c43f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 76.407228][ T5332] RAX: ffffffffffffffda RBX: 00007efc6b7e5fa0 RCX: 00007efc6b58f7c9
[ 76.407236][ T5332] RDX: 00000000fffffdef RSI: 00002000000000c0 RDI: 0000000000000008
[ 76.407244][ T5332] RBP: 00007efc6b613f91 R08: 0000000000000000 R09: 0000000000000000
[ 76.407251][ T5332] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 76.407258][ T5332] R13: 00007efc6b7e6038 R14: 00007efc6b7e5fa0 R15: 00007ffe6e7aab48
[ 76.407271][ T5332]
[ 76.407275][ T5332]
[ 76.566308][ T5332] The buggy address belongs to the physical page:
[ 76.568928][ T5332] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x559f0
[ 76.572733][ T5332] flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff)
[ 76.575684][ T5332] raw: 04fff00000000000 ffffea0001567c48 ffffea0001567bc8 0000000000000000
[ 76.579144][ T5332] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 76.582776][ T5332] page dumped because: kasan: bad access detected
[ 76.585863][ T5332] page_owner info is not present (never set?)
[ 76.588282][ T5332]
[ 76.589188][ T5332] Memory state around the buggy address:
[ 76.591553][ T5332] ffff8880559f0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 76.594979][ T5332] ffff8880559f0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 76.598543][ T5332] >ffff8880559f0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 76.602120][ T5332] ^
[ 76.604623][ T5332] ffff8880559f0180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 76.608128][ T5332] ffff8880559f0200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 76.611685][ T5332] ==================================================================
[ 76.625889][ T5332] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 76.629695][ T5332] CPU: 0 UID: 0 PID: 5332 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
[ 76.633519][ T5332] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
[ 76.638226][ T5332] Call Trace:
[ 76.639744][ T5332]
[ 76.641139][ T5332] vpanic+0x1e0/0x670
[ 76.642940][ T5332] panic+0xb9/0xc0
[ 76.644569][ T5332] ? __pfx_panic+0x10/0x10
[ 76.646521][ T5332] ? preempt_schedule_common+0x83/0xd0
[ 76.648806][ T5332] ? ext4_find_extent+0xae6/0xcc0
[ 76.650740][ T5332] check_panic_on_warn+0x89/0xb0
[ 76.652959][ T5332] ? ext4_find_extent+0xae6/0xcc0
[ 76.655118][ T5332] end_report+0x6f/0x140
[ 76.656893][ T5332] kasan_report+0x129/0x150
[ 76.658783][ T5332] ? ext4_find_extent+0xae6/0xcc0
[ 76.661084][ T5332] ext4_find_extent+0xae6/0xcc0
[ 76.663384][ T5332] ext4_ext_map_blocks+0x278/0x69c0
[ 76.665803][ T5332] ? ext4_map_blocks+0x73f/0x16f0
[ 76.668086][ T5332] ? __pfx_ext4_ext_map_blocks+0x10/0x10
[ 76.670437][ T5332] ? ext4_es_lookup_extent+0x6cd/0xb00
[ 76.672947][ T5332] ext4_map_blocks+0x82c/0x16f0
[ 76.674982][ T5332] ? __pfx_ext4_map_blocks+0x10/0x10
[ 76.677376][ T5332] ? __lock_acquire+0x6b6/0x2cf0
[ 76.679604][ T5332] ? trace_contention_end+0x39/0x100
[ 76.681981][ T5332] ? __bfs+0x154/0x290
[ 76.683883][ T5332] ? __pfx_hlock_conflict+0x10/0x10
[ 76.686255][ T5332] _ext4_get_block+0x1fa/0x4c0
[ 76.688427][ T5332] ? __pfx__ext4_get_block+0x10/0x10
[ 76.690798][ T5332] ? filemap_get_entry+0xad/0x2f0
[ 76.693131][ T5332] ext4_get_block_unwritten+0x2e/0x100
[ 76.695596][ T5332] ext4_block_write_begin+0xb03/0x1940
[ 76.698094][ T5332] ? __pfx_ext4_get_block_unwritten+0x10/0x10
[ 76.700753][ T5332] ? __pfx_ext4_block_write_begin+0x10/0x10
[ 76.703462][ T5332] ? folio_mapping+0x16f/0x1f0
[ 76.705591][ T5332] ? ext4_inode_journal_mode+0x193/0x470
[ 76.708005][ T5332] ext4_write_begin+0xb3a/0x1860
[ 76.709960][ T5332] ? __pfx_ext4_write_begin+0x10/0x10
[ 76.712413][ T5332] ? __ext4_handle_dirty_metadata+0x2fd/0x810
[ 76.714842][ T5332] ext4_da_write_begin+0x352/0xd30
[ 76.717056][ T5332] ? __pfx_ext4_da_write_begin+0x10/0x10
[ 76.719560][ T5332] generic_perform_write+0x2c5/0x900
[ 76.722170][ T5332] ? __pfx_generic_perform_write+0x10/0x10
[ 76.724854][ T5332] ? file_update_time_flags+0x448/0x4e0
[ 76.727333][ T5332] ? ext4_write_checks+0x24b/0x2c0
[ 76.729643][ T5332] ext4_buffered_write_iter+0xce/0x3a0
[ 76.731983][ T5332] ext4_file_write_iter+0x292/0x1bc0
[ 76.734382][ T5332] ? vfs_write+0x211/0xb30
[ 76.736467][ T5332] ? vfs_write+0x211/0xb30
[ 76.738522][ T5332] ? __pfx_ext4_file_write_iter+0x10/0x10
[ 76.741577][ T5332] vfs_write+0x5c9/0xb30
[ 76.743736][ T5332] ? __pfx_ext4_file_write_iter+0x10/0x10
[ 76.746291][ T5332] ? __pfx_vfs_write+0x10/0x10
[ 76.748612][ T5332] ? __fget_files+0x2a/0x420
[ 76.750870][ T5332] ksys_write+0x145/0x250
[ 76.752898][ T5332] ? __pfx_ksys_write+0x10/0x10
[ 76.755410][ T5332] do_syscall_64+0xec/0xf80
[ 76.757864][ T5332] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 76.760648][ T5332] ? trace_irq_disable+0x37/0x100
[ 76.762940][ T5332] ? clear_bhb_loop+0x60/0xb0
[ 76.765045][ T5332] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 76.767675][ T5332] RIP: 0033:0x7efc6b58f7c9
[ 76.769704][ T5332] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 76.778130][ T5332] RSP: 002b:00007efc6c43f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 76.781898][ T5332] RAX: ffffffffffffffda RBX: 00007efc6b7e5fa0 RCX: 00007efc6b58f7c9
[ 76.785109][ T5332] RDX: 00000000fffffdef RSI: 00002000000000c0 RDI: 0000000000000008
[ 76.788103][ T5332] RBP: 00007efc6b613f91 R08: 0000000000000000 R09: 0000000000000000
[ 76.791354][ T5332] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 76.794731][ T5332] R13: 00007efc6b7e6038 R14: 00007efc6b7e5fa0 R15: 00007ffe6e7aab48
[ 76.798090][ T5332]
[ 76.799678][ T5332] Kernel Offset: disabled
[ 76.801604][ T5332] Rebooting in 86400 seconds..