program: syz_mount_image$ext4(&(0x7f0000000000)='ext4\x00', &(0x7f0000000480)='./file0\x00', 0x0, &(0x7f0000000140)={[{@nouid32}]}, 0x1, 0x461, &(0x7f0000000540)="$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") r0 = open(&(0x7f0000000240)='./file1\x00', 0x145142, 0x0) r1 = 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) r2 = open(&(0x7f0000000000)='./bus\x00', 0x0, 0x0) ioctl$LOOP_SET_STATUS64(r2, 0x4c04, &(0x7f0000000540)={0x0, 0x0, 0x0, 0x0, 0x8005, 0x0, 0x0, 0x15, 0x0, "ef359f413bb93852f7d6a4ae6dddfbd1ce5d29c2ee5e5ca9000ff8ee09e737ff0edf110ff4117639c2eb4b78c660e677df701905b9aafab4afaaf755a3f6a004", "036c47c6780820d1cbf7966d61fdcf335263bd9bffbcc2542ded71038259ca171ce1a311ef54ec32d71e14ef3dc177e9b48b00", "f28359738e229a4c66810000000000d300e6d602000000000000000000000001", [0x200]}) writev(r1, &(0x7f0000000140)=[{&(0x7f0000001200)="10", 0x60000}], 0x1) sendfile(r0, r0, 0x0, 0x800000009) [ 84.855409][ T5324] Bluetooth: hci0: command tx timeout [ 84.954872][ T5348] loop0: detected capacity change from 0 to 512 [ 85.041302][ T5348] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 85.068150][ T25] audit: type=1800 audit(1752258214.120:2): pid=5348 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 [ 85.088344][ T25] audit: type=1800 audit(1752258214.140:3): pid=5348 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 [ 85.110475][ T5348] loop0: detected capacity change from 512 to 64 [ 85.128952][ T5348] syz.0.0: attempt to access beyond end of device [ 85.128952][ T5348] loop0: rw=2049, sector=88, nr_sectors = 24 limit=64 [ 85.147152][ T5348] EXT4-fs warning (device loop0): ext4_end_bio:372: I/O error 10 writing to inode 15 starting block 44) [ 85.153494][ T5348] Buffer I/O error on device loop0, logical block 44 [ 85.156651][ T5348] Buffer I/O error on device loop0, logical block 45 [ 85.159685][ T5348] Buffer I/O error on device loop0, logical block 46 [ 85.162607][ T5348] Buffer I/O error on device loop0, logical block 47 [ 85.168746][ T5348] Buffer I/O error on device loop0, logical block 48 [ 85.171785][ T5348] Buffer I/O error on device loop0, logical block 49 [ 85.175063][ T5348] Buffer I/O error on device loop0, logical block 50 [ 85.178320][ T5348] Buffer I/O error on device loop0, logical block 51 [ 85.182621][ T5348] Buffer I/O error on device loop0, logical block 52 [ 85.185605][ T5348] Buffer I/O error on device loop0, logical block 53 [ 85.301722][ T5348] ------------[ cut here ]------------ [ 85.304196][ T5348] kernel BUG at fs/ext4/mballoc.c:4685! [ 85.306456][ T5348] Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI [ 85.309056][ T5348] CPU: 0 UID: 0 PID: 5348 Comm: syz.0.0 Not tainted 6.16.0-rc5-syzkaller-00193-g40f92e79b0aa #0 PREEMPT(full) [ 85.313688][ T5348] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 85.318591][ T5348] RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 [ 85.321402][ T5348] Code: e8 04 5e ab ff 48 ba 00 00 00 00 00 fc ff df e9 da fa ff ff e8 70 db 47 ff 90 0f 0b e8 68 db 47 ff 90 0f 0b e8 60 db 47 ff 90 <0f> 0b e8 58 db 47 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 [ 85.329745][ T5348] RSP: 0018:ffffc9000d2c68c8 EFLAGS: 00010283 [ 85.332527][ T5348] RAX: ffffffff82785b10 RBX: 00000000ffffffcc RCX: 0000000000100000 [ 85.336178][ T5348] RDX: ffffc9000dd32000 RSI: 0000000000011e3a RDI: 0000000000011e3b [ 85.340135][ T5348] RBP: 1ffff110085fd0c4 R08: ffff888042fe9503 R09: 1ffff110085fd2a0 [ 85.343732][ T5348] R10: dffffc0000000000 R11: ffffed10085fd2a1 R12: 0000000000000000 [ 85.347536][ T5348] R13: 0000000000000054 R14: 1ffff110085fd2a3 R15: ffff888042fe9518 [ 85.351233][ T5348] FS: 00007f538c0a96c0(0000) GS:ffff88808d21b000(0000) knlGS:0000000000000000 [ 85.354801][ T5348] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.357545][ T5348] CR2: 00007f538c087fc8 CR3: 0000000044182000 CR4: 0000000000352ef0 [ 85.360946][ T5348] Call Trace: [ 85.362496][ T5348] [ 85.363852][ T5348] ext4_mb_use_preallocated+0x660/0x13f0 [ 85.366286][ T5348] ext4_mb_new_blocks+0x5b4/0x46a0 [ 85.368533][ T5348] ? ext4_new_meta_blocks+0x2b3/0x3c0 [ 85.370984][ T5348] ? __pfx_ext4_new_meta_blocks+0x10/0x10 [ 85.373538][ T5348] ? __pfx_ext4_mb_new_blocks+0x10/0x10 [ 85.376843][ T5348] ? ext4_block_to_path+0x297/0x6f0 [ 85.379406][ T5348] ext4_ind_map_blocks+0xe21/0x21b0 [ 85.381836][ T5348] ? __pfx_ext4_ind_map_blocks+0x10/0x10 [ 85.384347][ T5348] ? __pfx_down_write+0x10/0x10 [ 85.386558][ T5348] ? ext4_es_lookup_extent+0x622/0xa70 [ 85.388981][ T5348] ext4_map_blocks+0x8d8/0x18d0 [ 85.391266][ T5348] ? __pfx_ext4_map_blocks+0x10/0x10 [ 85.393644][ T5348] ? rcu_is_watching+0x15/0xb0 [ 85.395846][ T5348] ext4_do_writepages+0x1703/0x3f30 [ 85.398415][ T5348] ? lockdep_hardirqs_on+0x9c/0x150 [ 85.400873][ T5348] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 85.403524][ T5348] ? __pfx_ext4_do_writepages+0x10/0x10 [ 85.405899][ T5348] ? __lock_acquire+0xab9/0xd20 [ 85.408065][ T5348] ? __lock_acquire+0xab9/0xd20 [ 85.410300][ T5348] ? rcu_read_lock_any_held+0xb3/0x120 [ 85.412773][ T5348] ext4_writepages+0x205/0x350 [ 85.414989][ T5348] ? __pfx_ext4_writepages+0x10/0x10 [ 85.417227][ T5348] ? __lock_acquire+0xab9/0xd20 [ 85.419359][ T5348] ? __pfx_ext4_writepages+0x10/0x10 [ 85.421721][ T5348] do_writepages+0x32e/0x550 [ 85.423766][ T5348] ? do_raw_spin_unlock+0x4d/0x240 [ 85.425750][ T5348] file_write_and_wait_range+0x22c/0x330 [ 85.428021][ T5348] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 85.430592][ T5348] generic_buffers_fsync_noflush+0x6c/0x180 [ 85.433088][ T5348] ext4_sync_file+0x332/0xb20 [ 85.435182][ T5348] ext4_buffered_write_iter+0x2ca/0x3a0 [ 85.437582][ T5348] ext4_file_write_iter+0x298/0x1bc0 [ 85.439995][ T5348] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 85.442678][ T5348] do_iter_readv_writev+0x56b/0x7f0 [ 85.445114][ T5348] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 85.447758][ T5348] ? rcu_read_lock_any_held+0xb3/0x120 [ 85.450192][ T5348] vfs_writev+0x31a/0x960 [ 85.452119][ T5348] ? __lock_acquire+0xab9/0xd20 [ 85.454394][ T5348] ? __pfx_vfs_writev+0x10/0x10 [ 85.456601][ T5348] ? __fget_files+0x2a/0x420 [ 85.458634][ T5348] ? __fget_files+0x3a0/0x420 [ 85.460714][ T5348] ? __fget_files+0x2a/0x420 [ 85.462844][ T5348] do_writev+0x14d/0x2d0 [ 85.464733][ T5348] ? __pfx_do_writev+0x10/0x10 [ 85.466844][ T5348] ? rcu_is_watching+0x15/0xb0 [ 85.468595][ T5348] ? do_syscall_64+0xbe/0x3b0 [ 85.470694][ T5348] do_syscall_64+0xfa/0x3b0 [ 85.472760][ T5348] ? lockdep_hardirqs_on+0x9c/0x150 [ 85.475112][ T5348] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.477832][ T5348] ? clear_bhb_loop+0x60/0xb0 [ 85.479723][ T5348] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.482079][ T5348] RIP: 0033:0x7f538b18e929 [ 85.484777][ T5348] 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 [ 85.492170][ T5348] RSP: 002b:00007f538c0a9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 85.495787][ T5348] RAX: ffffffffffffffda RBX: 00007f538b3b5fa0 RCX: 00007f538b18e929 [ 85.499203][ T5348] RDX: 0000000000000001 RSI: 0000200000000140 RDI: 0000000000000005 [ 85.502817][ T5348] RBP: 00007f538b210b39 R08: 0000000000000000 R09: 0000000000000000 [ 85.506386][ T5348] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.510076][ T5348] R13: 0000000000000000 R14: 00007f538b3b5fa0 R15: 00007ffc2b378f58 [ 85.513597][ T5348] [ 85.514976][ T5348] Modules linked in: [ 85.518214][ T5348] ---[ end trace 0000000000000000 ]--- [ 85.521195][ T5348] RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 [ 85.523347][ T5348] Code: e8 04 5e ab ff 48 ba 00 00 00 00 00 fc ff df e9 da fa ff ff e8 70 db 47 ff 90 0f 0b e8 68 db 47 ff 90 0f 0b e8 60 db 47 ff 90 <0f> 0b e8 58 db 47 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 [ 85.531439][ T5348] RSP: 0018:ffffc9000d2c68c8 EFLAGS: 00010283 [ 85.534107][ T5348] RAX: ffffffff82785b10 RBX: 00000000ffffffcc RCX: 0000000000100000 [ 85.537660][ T5348] RDX: ffffc9000dd32000 RSI: 0000000000011e3a RDI: 0000000000011e3b [ 85.541739][ T5348] RBP: 1ffff110085fd0c4 R08: ffff888042fe9503 R09: 1ffff110085fd2a0 [ 85.544913][ T5348] R10: dffffc0000000000 R11: ffffed10085fd2a1 R12: 0000000000000000 [ 85.548317][ T5348] R13: 0000000000000054 R14: 1ffff110085fd2a3 R15: ffff888042fe9518 [ 85.552026][ T5348] FS: 00007f538c0a96c0(0000) GS:ffff88808d21b000(0000) knlGS:0000000000000000 [ 85.556021][ T5348] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.559816][ T5348] CR2: 00007f538c087fc8 CR3: 0000000044182000 CR4: 0000000000352ef0 [ 85.563109][ T5348] Kernel panic - not syncing: Fatal exception [ 85.565782][ T5348] Kernel Offset: disabled [ 85.567468][ T5348] Rebooting in 86400 seconds..