program: syz_mount_image$ext4(&(0x7f0000000000)='ext4\x00', &(0x7f0000000480)='./file0\x00', 0x0, &(0x7f0000000140)={[{@nouid32}]}, 0x1, 0x461, &(0x7f0000000540)="$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") 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$LOOP_SET_STATUS64(r1, 0x4c04, &(0x7f0000000540)={0x0, 0x0, 0x0, 0x0, 0x8005, 0x0, 0x0, 0x15, 0x0, "ef359f413bb93852f7d6a4ae6dddfbd1ce5d29c2ee5e5ca9000ff8ee09e737ff0edf110ff4117639c2eb4b78c660e677df701905b9aafab4afaaf755a3f6a004", "036c47c6780820d1cbf7966d61fdcf335263bd9bffbcc2542ded71038259ca171ce1a311ef54ec32d71e14ef3dc177e9b48b00", "f28359738e229a4c66810000000000d300e6d602000000000000000000000001", [0x200]}) bpf$MAP_CREATE(0x0, 0x0, 0x48) writev(r0, &(0x7f0000000140)=[{&(0x7f0000001200)="10", 0x60000}], 0x1) [ 75.272621][ T5321] Bluetooth: hci0: command tx timeout [ 75.319584][ T5341] loop0: detected capacity change from 0 to 512 [ 75.369003][ T5341] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 75.394522][ T25] audit: type=1800 audit(1753186719.070:2): pid=5341 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 [ 75.423456][ T5341] loop0: detected capacity change from 512 to 64 [ 75.446111][ T5341] syz.0.0: attempt to access beyond end of device [ 75.446111][ T5341] loop0: rw=2049, sector=88, nr_sectors = 24 limit=64 [ 75.452297][ T5341] EXT4-fs warning (device loop0): ext4_end_bio:372: I/O error 10 writing to inode 15 starting block 44) [ 75.461271][ T5341] Buffer I/O error on device loop0, logical block 44 [ 75.464686][ T5341] Buffer I/O error on device loop0, logical block 45 [ 75.467866][ T5341] Buffer I/O error on device loop0, logical block 46 [ 75.470928][ T5341] Buffer I/O error on device loop0, logical block 47 [ 75.477306][ T5341] Buffer I/O error on device loop0, logical block 48 [ 75.480547][ T5341] Buffer I/O error on device loop0, logical block 49 [ 75.483508][ T5341] Buffer I/O error on device loop0, logical block 50 [ 75.486568][ T5341] Buffer I/O error on device loop0, logical block 51 [ 75.490439][ T5341] Buffer I/O error on device loop0, logical block 52 [ 75.493404][ T5341] Buffer I/O error on device loop0, logical block 53 [ 75.604419][ T5341] ------------[ cut here ]------------ [ 75.607067][ T5341] kernel BUG at fs/ext4/mballoc.c:4685! [ 75.609561][ T5341] Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI [ 75.612424][ T5341] CPU: 0 UID: 0 PID: 5341 Comm: syz.0.0 Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT(full) [ 75.616688][ T5341] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 75.621410][ T5341] RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 [ 75.624231][ T5341] 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 [ 75.631805][ T5341] RSP: 0018:ffffc9000ff0e8c8 EFLAGS: 00010287 [ 75.634622][ T5341] RAX: ffffffff827873a0 RBX: 00000000ffffffcc RCX: 0000000000100000 [ 75.638094][ T5341] RDX: ffffc9000de12000 RSI: 0000000000012d35 RDI: 0000000000012d36 [ 75.641781][ T5341] RBP: 1ffff110087f7622 R08: ffff888043fbc503 R09: 1ffff110087f78a0 [ 75.645498][ T5341] R10: dffffc0000000000 R11: ffffed10087f78a1 R12: 0000000000000000 [ 75.648848][ T5341] R13: 0000000000000054 R14: 1ffff110087f78a3 R15: ffff888043fbc518 [ 75.652429][ T5341] FS: 00007f2d0b4a96c0(0000) GS:ffff88808d218000(0000) knlGS:0000000000000000 [ 75.656225][ T5341] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.659021][ T5341] CR2: 0000200000019000 CR3: 000000004331d000 CR4: 0000000000352ef0 [ 75.662633][ T5341] Call Trace: [ 75.664054][ T5341] [ 75.665232][ T5341] ext4_mb_use_preallocated+0x660/0x13f0 [ 75.667433][ T5341] ext4_mb_new_blocks+0x5b4/0x46a0 [ 75.669354][ T5341] ? ext4_new_meta_blocks+0x2b3/0x3c0 [ 75.671374][ T5341] ? __pfx_ext4_new_meta_blocks+0x10/0x10 [ 75.673495][ T5341] ? __pfx_ext4_mb_new_blocks+0x10/0x10 [ 75.675665][ T5341] ? ext4_block_to_path+0x297/0x6f0 [ 75.677647][ T5341] ext4_ind_map_blocks+0xe21/0x21b0 [ 75.679832][ T5341] ? __pfx_ext4_ind_map_blocks+0x10/0x10 [ 75.682303][ T5341] ? __pfx_down_write+0x10/0x10 [ 75.684405][ T5341] ? ext4_es_lookup_extent+0x622/0xa70 [ 75.686636][ T5341] ext4_map_blocks+0x8d8/0x18d0 [ 75.688788][ T5341] ? __pfx_ext4_map_blocks+0x10/0x10 [ 75.691113][ T5341] ? rcu_is_watching+0x15/0xb0 [ 75.693343][ T5341] ext4_do_writepages+0x1703/0x3f30 [ 75.695709][ T5341] ? lockdep_hardirqs_on+0x9c/0x150 [ 75.698091][ T5341] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 75.700788][ T5341] ? __pfx_ext4_do_writepages+0x10/0x10 [ 75.703278][ T5341] ? __lock_acquire+0xab9/0xd20 [ 75.705510][ T5341] ? __lock_acquire+0xab9/0xd20 [ 75.707680][ T5341] ? rcu_read_lock_any_held+0xb3/0x120 [ 75.710127][ T5341] ext4_writepages+0x205/0x350 [ 75.712312][ T5341] ? __pfx_ext4_writepages+0x10/0x10 [ 75.714583][ T5341] ? __lock_acquire+0xab9/0xd20 [ 75.716726][ T5341] ? __pfx_ext4_writepages+0x10/0x10 [ 75.718987][ T5341] do_writepages+0x32e/0x550 [ 75.720991][ T5341] ? do_raw_spin_unlock+0x4d/0x240 [ 75.723213][ T5341] file_write_and_wait_range+0x22c/0x330 [ 75.725634][ T5341] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 75.728252][ T5341] generic_buffers_fsync_noflush+0x6c/0x180 [ 75.730792][ T5341] ext4_sync_file+0x332/0xb20 [ 75.732931][ T5341] ext4_buffered_write_iter+0x2ca/0x3a0 [ 75.735406][ T5341] ext4_file_write_iter+0x298/0x1bc0 [ 75.737779][ T5341] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 75.740381][ T5341] do_iter_readv_writev+0x56b/0x7f0 [ 75.742733][ T5341] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 75.745273][ T5341] ? rcu_read_lock_any_held+0xb3/0x120 [ 75.747724][ T5341] vfs_writev+0x31a/0x960 [ 75.749687][ T5341] ? __lock_acquire+0xab9/0xd20 [ 75.751918][ T5341] ? __pfx_vfs_writev+0x10/0x10 [ 75.754062][ T5341] ? __fget_files+0x2a/0x420 [ 75.756160][ T5341] ? __fget_files+0x3a0/0x420 [ 75.758276][ T5341] ? __fget_files+0x2a/0x420 [ 75.760355][ T5341] do_writev+0x14d/0x2d0 [ 75.762218][ T5341] ? __pfx_do_writev+0x10/0x10 [ 75.764321][ T5341] ? rcu_is_watching+0x15/0xb0 [ 75.766449][ T5341] ? do_syscall_64+0xbe/0x3b0 [ 75.768678][ T5341] do_syscall_64+0xfa/0x3b0 [ 75.770780][ T5341] ? lockdep_hardirqs_on+0x9c/0x150 [ 75.773028][ T5341] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.775796][ T5341] ? clear_bhb_loop+0x60/0xb0 [ 75.777833][ T5341] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.780493][ T5341] RIP: 0033:0x7f2d0a58e9a9 [ 75.782474][ T5341] 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 [ 75.790800][ T5341] RSP: 002b:00007f2d0b4a9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 75.794420][ T5341] RAX: ffffffffffffffda RBX: 00007f2d0a7b5fa0 RCX: 00007f2d0a58e9a9 [ 75.798142][ T5341] RDX: 0000000000000001 RSI: 0000200000000140 RDI: 0000000000000004 [ 75.802114][ T5341] RBP: 00007f2d0a610d69 R08: 0000000000000000 R09: 0000000000000000 [ 75.805670][ T5341] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 75.809259][ T5341] R13: 0000000000000000 R14: 00007f2d0a7b5fa0 R15: 00007ffc59e5f5c8 [ 75.812807][ T5341] [ 75.814269][ T5341] Modules linked in: [ 75.816586][ T5341] ---[ end trace 0000000000000000 ]--- [ 75.819029][ T5341] RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 [ 75.821726][ T5341] 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 [ 75.830398][ T5341] RSP: 0018:ffffc9000ff0e8c8 EFLAGS: 00010287 [ 75.833239][ T5341] RAX: ffffffff827873a0 RBX: 00000000ffffffcc RCX: 0000000000100000 [ 75.836737][ T5341] RDX: ffffc9000de12000 RSI: 0000000000012d35 RDI: 0000000000012d36 [ 75.840203][ T5341] RBP: 1ffff110087f7622 R08: ffff888043fbc503 R09: 1ffff110087f78a0 [ 75.843456][ T5341] R10: dffffc0000000000 R11: ffffed10087f78a1 R12: 0000000000000000 [ 75.846748][ T5341] R13: 0000000000000054 R14: 1ffff110087f78a3 R15: ffff888043fbc518 [ 75.850278][ T5341] FS: 00007f2d0b4a96c0(0000) GS:ffff88808d218000(0000) knlGS:0000000000000000 [ 75.854127][ T5341] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.856962][ T5341] CR2: 0000200000019000 CR3: 000000004331d000 CR4: 0000000000352ef0 [ 75.860424][ T5341] Kernel panic - not syncing: Fatal exception [ 75.863450][ T5341] Kernel Offset: disabled [ 75.865396][ T5341] Rebooting in 86400 seconds..