program: syz_mount_image$ext4(&(0x7f0000000000)='ext4\x00', &(0x7f0000000480)='./file0\x00', 0x0, &(0x7f0000000140)={[{@nouid32}]}, 0x1, 0x461, &(0x7f0000000540)="$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") open(0x0, 0x145142, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./file1\x00', 0x105042, 0x1db) open(&(0x7f0000000180)='./bus\x00', 0x14937e, 0x111) mount(&(0x7f0000000280)=@loop={'/dev/loop', 0x0}, &(0x7f0000000140)='./bus\x00', 0x0, 0x5000, 0x0) r1 = open(&(0x7f0000000000)='./bus\x00', 0x0, 0x0) ioctl$LOOP_SET_STATUS64(r1, 0x4c04, &(0x7f0000000540)={0x0, 0x0, 0x0, 0x0, 0x8005, 0x0, 0x0, 0x15, 0x0, "ef359f413bb93852f7d6a4ae6dddfbd1ce5d29c2ee5e5ca9000ff8ee09e737ff0edf110ff4117639c2eb4b78c660e677df701905b9aafab4afaaf755a3f6a004", "036c47c6780820d1cbf7966d61fdcf335263bd9bffbcc2542ded71038259ca171ce1a311ef54ec32d71e14ef3dc177e9b48b00", "f28359738e229a4c66810000000000d300e6d602000000000000000000000001", [0x200]}) bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xc, &(0x7f0000000440)=ANY=[@ANYBLOB], &(0x7f0000000240)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) ioctl$TIOCL_GETMOUSEREPORTING(0xffffffffffffffff, 0x5412, &(0x7f00000000c0)=0x13) ioctl$TIOCL_GETMOUSEREPORTING(0xffffffffffffffff, 0x5412, &(0x7f0000000280)=0x11) writev(r0, &(0x7f0000000140)=[{&(0x7f0000001200)="10", 0x60000}], 0x1) [ 92.719148][ T4685] Bluetooth: hci0: command tx timeout [ 92.729546][ T10] cfg80211: failed to load regulatory.db [ 92.819665][ T5343] loop0: detected capacity change from 0 to 512 [ 92.903398][ T5343] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 92.962145][ T25] audit: type=1800 audit(1753160325.840:2): pid=5343 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.0" name="file1" dev="loop0" ino=15 res=0 errno=0 [ 93.020015][ T5343] loop0: detected capacity change from 512 to 64 [ 93.038018][ T5343] syz.0.0: attempt to access beyond end of device [ 93.038018][ T5343] loop0: rw=2049, sector=88, nr_sectors = 24 limit=64 [ 93.055099][ T5343] EXT4-fs warning (device loop0): ext4_end_bio:372: I/O error 10 writing to inode 15 starting block 44) [ 93.062119][ T5343] Buffer I/O error on device loop0, logical block 44 [ 93.065185][ T5343] Buffer I/O error on device loop0, logical block 45 [ 93.068278][ T5343] Buffer I/O error on device loop0, logical block 46 [ 93.071094][ T5343] Buffer I/O error on device loop0, logical block 47 [ 93.074888][ T5343] Buffer I/O error on device loop0, logical block 48 [ 93.077959][ T5343] Buffer I/O error on device loop0, logical block 49 [ 93.080859][ T5343] Buffer I/O error on device loop0, logical block 50 [ 93.083671][ T5343] Buffer I/O error on device loop0, logical block 51 [ 93.087971][ T5343] Buffer I/O error on device loop0, logical block 52 [ 93.090935][ T5343] Buffer I/O error on device loop0, logical block 53 [ 93.199263][ T5343] ------------[ cut here ]------------ [ 93.201897][ T5343] kernel BUG at fs/ext4/mballoc.c:4685! [ 93.204310][ T5343] Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI [ 93.207377][ T5343] CPU: 0 UID: 0 PID: 5343 Comm: syz.0.0 Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT(full) [ 93.211653][ T5343] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 93.215919][ T5343] RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 [ 93.218625][ T5343] Code: e8 f4 3d ab ff 48 ba 00 00 00 00 00 fc ff df e9 da fa ff ff e8 70 bd 47 ff 90 0f 0b e8 68 bd 47 ff 90 0f 0b e8 60 bd 47 ff 90 <0f> 0b e8 58 bd 47 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 [ 93.226786][ T5343] RSP: 0018:ffffc9000d6968c8 EFLAGS: 00010287 [ 93.229539][ T5343] RAX: ffffffff827873a0 RBX: 00000000ffffffcc RCX: 0000000000100000 [ 93.232900][ T5343] RDX: ffffc9000e34a000 RSI: 000000000001205e RDI: 000000000001205f [ 93.236282][ T5343] RBP: 1ffff1100888ae22 R08: ffff888044458503 R09: 1ffff1100888b0a0 [ 93.239861][ T5343] R10: dffffc0000000000 R11: ffffed100888b0a1 R12: 0000000000000000 [ 93.243238][ T5343] R13: 0000000000000054 R14: 1ffff1100888b0a3 R15: ffff888044458518 [ 93.246738][ T5343] FS: 00007fb4cbcdb6c0(0000) GS:ffff88808d218000(0000) knlGS:0000000000000000 [ 93.250627][ T5343] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 93.253522][ T5343] CR2: 00007ff39f02e000 CR3: 0000000043aff000 CR4: 0000000000352ef0 [ 93.257064][ T5343] Call Trace: [ 93.258674][ T5343] [ 93.259998][ T5343] ext4_mb_use_preallocated+0x660/0x13f0 [ 93.262497][ T5343] ext4_mb_new_blocks+0x5b4/0x46a0 [ 93.264784][ T5343] ? ext4_new_meta_blocks+0x2b3/0x3c0 [ 93.267097][ T5343] ? __pfx_ext4_new_meta_blocks+0x10/0x10 [ 93.269403][ T5343] ? __pfx_ext4_mb_new_blocks+0x10/0x10 [ 93.271865][ T5343] ? ext4_block_to_path+0x297/0x6f0 [ 93.274109][ T5343] ext4_ind_map_blocks+0xe21/0x21b0 [ 93.276506][ T5343] ? __pfx_ext4_ind_map_blocks+0x10/0x10 [ 93.279056][ T5343] ? __pfx_down_write+0x10/0x10 [ 93.281479][ T5343] ? ext4_es_lookup_extent+0x622/0xa70 [ 93.284098][ T5343] ext4_map_blocks+0x8d8/0x18d0 [ 93.286428][ T5343] ? __pfx_ext4_map_blocks+0x10/0x10 [ 93.289009][ T5343] ? rcu_is_watching+0x15/0xb0 [ 93.291215][ T5343] ext4_do_writepages+0x1703/0x3f30 [ 93.293532][ T5343] ? lockdep_hardirqs_on+0x9c/0x150 [ 93.295892][ T5343] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 93.298468][ T5343] ? __pfx_ext4_do_writepages+0x10/0x10 [ 93.301018][ T5343] ? __lock_acquire+0xab9/0xd20 [ 93.303338][ T5343] ? __lock_acquire+0xab9/0xd20 [ 93.305685][ T5343] ? rcu_read_lock_any_held+0xb3/0x120 [ 93.308199][ T5343] ext4_writepages+0x205/0x350 [ 93.310432][ T5343] ? __pfx_ext4_writepages+0x10/0x10 [ 93.313023][ T5343] ? __lock_acquire+0xab9/0xd20 [ 93.315323][ T5343] ? __pfx_ext4_writepages+0x10/0x10 [ 93.317885][ T5343] do_writepages+0x32e/0x550 [ 93.320183][ T5343] ? do_raw_spin_unlock+0x4d/0x240 [ 93.322715][ T5343] file_write_and_wait_range+0x22c/0x330 [ 93.325339][ T5343] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 93.328285][ T5343] generic_buffers_fsync_noflush+0x6c/0x180 [ 93.331073][ T5343] ext4_sync_file+0x332/0xb20 [ 93.333293][ T5343] ext4_buffered_write_iter+0x2ca/0x3a0 [ 93.335983][ T5343] ext4_file_write_iter+0x298/0x1bc0 [ 93.338368][ T5343] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 93.340948][ T5343] do_iter_readv_writev+0x56b/0x7f0 [ 93.342967][ T5343] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 93.345241][ T5343] ? rcu_read_lock_any_held+0xb3/0x120 [ 93.347525][ T5343] vfs_writev+0x31a/0x960 [ 93.349286][ T5343] ? __lock_acquire+0xab9/0xd20 [ 93.351213][ T5343] ? __pfx_vfs_writev+0x10/0x10 [ 93.353279][ T5343] ? __fget_files+0x2a/0x420 [ 93.355227][ T5343] ? __fget_files+0x3a0/0x420 [ 93.357337][ T5343] ? __fget_files+0x2a/0x420 [ 93.359355][ T5343] do_writev+0x14d/0x2d0 [ 93.361101][ T5343] ? __pfx_do_writev+0x10/0x10 [ 93.363080][ T5343] ? rcu_is_watching+0x15/0xb0 [ 93.365070][ T5343] ? do_syscall_64+0xbe/0x3b0 [ 93.367043][ T5343] do_syscall_64+0xfa/0x3b0 [ 93.368915][ T5343] ? lockdep_hardirqs_on+0x9c/0x150 [ 93.371020][ T5343] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 93.373691][ T5343] ? clear_bhb_loop+0x60/0xb0 [ 93.375836][ T5343] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 93.378348][ T5343] RIP: 0033:0x7fb4cad8e9a9 [ 93.380413][ T5343] 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 [ 93.389000][ T5343] RSP: 002b:00007fb4cbcdb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 93.392244][ T5343] RAX: ffffffffffffffda RBX: 00007fb4cafb5fa0 RCX: 00007fb4cad8e9a9 [ 93.395799][ T5343] RDX: 0000000000000001 RSI: 0000200000000140 RDI: 0000000000000004 [ 93.399409][ T5343] RBP: 00007fb4cae10d69 R08: 0000000000000000 R09: 0000000000000000 [ 93.402763][ T5343] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 93.406579][ T5343] R13: 0000000000000000 R14: 00007fb4cafb5fa0 R15: 00007fff3c2cc818 [ 93.410136][ T5343] [ 93.411527][ T5343] Modules linked in: [ 93.413845][ T5343] ---[ end trace 0000000000000000 ]--- [ 93.416329][ T5343] RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 [ 93.419221][ T5343] Code: e8 f4 3d ab ff 48 ba 00 00 00 00 00 fc ff df e9 da fa ff ff e8 70 bd 47 ff 90 0f 0b e8 68 bd 47 ff 90 0f 0b e8 60 bd 47 ff 90 <0f> 0b e8 58 bd 47 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 [ 93.427600][ T5343] RSP: 0018:ffffc9000d6968c8 EFLAGS: 00010287 [ 93.430445][ T5343] RAX: ffffffff827873a0 RBX: 00000000ffffffcc RCX: 0000000000100000 [ 93.433823][ T5343] RDX: ffffc9000e34a000 RSI: 000000000001205e RDI: 000000000001205f [ 93.437297][ T5343] RBP: 1ffff1100888ae22 R08: ffff888044458503 R09: 1ffff1100888b0a0 [ 93.441694][ T5343] R10: dffffc0000000000 R11: ffffed100888b0a1 R12: 0000000000000000 [ 93.446065][ T5343] R13: 0000000000000054 R14: 1ffff1100888b0a3 R15: ffff888044458518 [ 93.450615][ T5343] FS: 00007fb4cbcdb6c0(0000) GS:ffff88808d218000(0000) knlGS:0000000000000000 [ 93.455097][ T5343] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 93.457876][ T5343] CR2: 00007ff39f02e000 CR3: 0000000043aff000 CR4: 0000000000352ef0 [ 93.461480][ T5343] Kernel panic - not syncing: Fatal exception [ 93.464286][ T5343] Kernel Offset: disabled [ 93.466201][ T5343] Rebooting in 86400 seconds..