program: syz_mount_image$ext4(&(0x7f0000000000)='ext4\x00', &(0x7f0000000480)='./file0\x00', 0x0, &(0x7f0000000140)={[{@nouid32}]}, 0x1, 0x461, &(0x7f0000000540)="$eJzs3U9sFGUfB/DvbrslAd638OZVEf9VUCmi1LYmSIKJRDnJxWDiuaGFEAs1tCZCiNHEgzcvJp49KDePHDwZD3jUBC/e1JMxEkMkntSa2e7Qbdkt3dB2q/v5JLP7zM6wz2/m4ffM7MOTIUDPGipeKsn2JN8mGVxYXbrD0MLbzRuXTv5+49LJSubnT/xaqe/3241LJ8tdyz+3rXipJsPVpPpeJQ+0qHf2wsXXJ6anp8431kfmzr4xMnvh4tNnzk6cnjo9dW700OHnxkcPjY2Pr9mxvnz57RPbXnnh2AeT136ZufzD50W82xvbmo9jrQxlaOm5bPLEWlfWZfc0lSv9XQyEjvQlKZqrVs//wfRlsfEG89X3XQ0OWFfzhS1tN78zD/yLVdLtCIDuKC/0xe/fcll6C3BsXe8/6K7rRxd+ABbtfrOxLGzpT7WxT23Z7/u1NJTkyJVjnxVL1mkcBgAAAKCXfXE0yVOtxv+qubdpv6J8X5JdSe5Psjupz+t5MMlDSR5O8kg5n6gDy/dfPv5TaTeBhjVx/WhypDG3a+n4Xzn6lx19jbX/FCupVU6dmZ56Jsl/kwyntqVYH12hjqtf//VNu23N43/FUtRfjgU24vi5f9m/T09OzE3czTGz6Pq7ye7+Vu1fuTUTqEjBR5Ps6eSLa4vFH/fsP91utzu3P+tp/uNkX8v8b3S81w7X31aYnzlS7w9Gyl7hdu+Pjr3Urv4W7V9UrP03SJH/W1dq/2RHpXm+7mzndVzddeX5dts67/+/+6To/wcqr9YDHGh8+tbE3Nz50WSgcvz2z8c6j/mfrf1NU3k+yvNVtP/w3tbX//81fdveJI8lebwxd3lf/dqf7E/yZJIDK0Tz54uHXkvzHUUT/X93Fe0/2TL/b00NWJb/nReO7PzoeLv6V5f/z9b/Qg83PnH/d2erbaBuxwkAAAAAAADA2qjWn4FXqR68Va5WDx5ceIbf/7O1Oj0zO3fg1Myb5yYXnpW3I7VqOdNrsGk+6Gi9vLg+tmx9PMnOJB/2/dF48sDM9GS3Dx563LY2+V/4qa/b0QHrzvNaoXetIv9rGxEHsPFc/6F3yX/oXfIfepf8h94l/6F3yX/oXavP/4F1jQPYeK7/0JPu5rl+m63Qn00RRstCOX+qS2GU/yX/Jjkbm7Pw6ZfJBtTVl2SzHPIKhW72SgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACbx98BAAD//5IX2eo=") 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]}) writev(r0, &(0x7f0000000140)=[{&(0x7f0000001200)="10", 0x60000}], 0x1) [ 74.901438][ T5316] Bluetooth: hci0: command tx timeout [ 74.944246][ T5337] loop0: detected capacity change from 0 to 512 [ 75.010030][ T5337] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 75.045533][ T25] audit: type=1800 audit(1753186719.175:2): pid=5337 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 [ 75.076307][ T5337] loop0: detected capacity change from 512 to 64 [ 75.091355][ T5337] syz.0.0: attempt to access beyond end of device [ 75.091355][ T5337] loop0: rw=2049, sector=88, nr_sectors = 24 limit=64 [ 75.111290][ T5337] EXT4-fs warning (device loop0): ext4_end_bio:372: I/O error 10 writing to inode 15 starting block 44) [ 75.118043][ T5337] Buffer I/O error on device loop0, logical block 44 [ 75.120963][ T5337] Buffer I/O error on device loop0, logical block 45 [ 75.123565][ T5337] Buffer I/O error on device loop0, logical block 46 [ 75.126587][ T5337] Buffer I/O error on device loop0, logical block 47 [ 75.132362][ T5337] Buffer I/O error on device loop0, logical block 48 [ 75.135348][ T5337] Buffer I/O error on device loop0, logical block 49 [ 75.138056][ T5337] Buffer I/O error on device loop0, logical block 50 [ 75.140905][ T5337] Buffer I/O error on device loop0, logical block 51 [ 75.145349][ T5337] Buffer I/O error on device loop0, logical block 52 [ 75.148230][ T5337] Buffer I/O error on device loop0, logical block 53 [ 75.256347][ T5337] ------------[ cut here ]------------ [ 75.258975][ T5337] kernel BUG at fs/ext4/mballoc.c:4685! [ 75.261417][ T5337] Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI [ 75.263853][ T5337] CPU: 0 UID: 0 PID: 5337 Comm: syz.0.0 Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT(full) [ 75.267897][ T5337] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 75.272603][ T5337] RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 [ 75.275303][ T5337] 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 [ 75.283416][ T5337] RSP: 0018:ffffc9000d4468c8 EFLAGS: 00010287 [ 75.285990][ T5337] RAX: ffffffff827873a0 RBX: 00000000ffffffcc RCX: 0000000000100000 [ 75.289666][ T5337] RDX: ffffc9000ddda000 RSI: 0000000000011a2a RDI: 0000000000011a2b [ 75.293308][ T5337] RBP: 1ffff11008863a8e R08: ffff88804431e6d3 R09: 1ffff11008863cda [ 75.296873][ T5337] R10: dffffc0000000000 R11: ffffed1008863cdb R12: 0000000000000000 [ 75.300564][ T5337] R13: 0000000000000054 R14: 1ffff11008863cdd R15: ffff88804431e6e8 [ 75.304216][ T5337] FS: 00007f175dfaa6c0(0000) GS:ffff88808d218000(0000) knlGS:0000000000000000 [ 75.308485][ T5337] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.311309][ T5337] CR2: 00007fa91f5ad000 CR3: 0000000044484000 CR4: 0000000000352ef0 [ 75.314513][ T5337] Call Trace: [ 75.315976][ T5337] [ 75.317265][ T5337] ext4_mb_use_preallocated+0x660/0x13f0 [ 75.319806][ T5337] ext4_mb_new_blocks+0x5b4/0x46a0 [ 75.322245][ T5337] ? ext4_new_meta_blocks+0x2b3/0x3c0 [ 75.324822][ T5337] ? __pfx_ext4_new_meta_blocks+0x10/0x10 [ 75.327533][ T5337] ? __pfx_ext4_mb_new_blocks+0x10/0x10 [ 75.329836][ T5337] ? ext4_block_to_path+0x297/0x6f0 [ 75.331879][ T5337] ext4_ind_map_blocks+0xe21/0x21b0 [ 75.334037][ T5337] ? __pfx_ext4_ind_map_blocks+0x10/0x10 [ 75.336325][ T5337] ? __pfx_down_write+0x10/0x10 [ 75.338278][ T5337] ? ext4_es_lookup_extent+0x622/0xa70 [ 75.340584][ T5337] ext4_map_blocks+0x8d8/0x18d0 [ 75.342826][ T5337] ? __pfx_ext4_map_blocks+0x10/0x10 [ 75.345653][ T5337] ? rcu_is_watching+0x15/0xb0 [ 75.348072][ T5337] ext4_do_writepages+0x1703/0x3f30 [ 75.350619][ T5337] ? lockdep_hardirqs_on+0x9c/0x150 [ 75.353050][ T5337] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 75.355733][ T5337] ? __pfx_ext4_do_writepages+0x10/0x10 [ 75.358290][ T5337] ? __lock_acquire+0xab9/0xd20 [ 75.360706][ T5337] ? __lock_acquire+0xab9/0xd20 [ 75.362958][ T5337] ? rcu_read_lock_any_held+0xb3/0x120 [ 75.365497][ T5337] ext4_writepages+0x205/0x350 [ 75.367774][ T5337] ? __pfx_ext4_writepages+0x10/0x10 [ 75.370425][ T5337] ? __lock_acquire+0xab9/0xd20 [ 75.372908][ T5337] ? __pfx_ext4_writepages+0x10/0x10 [ 75.375412][ T5337] do_writepages+0x32e/0x550 [ 75.377554][ T5337] ? do_raw_spin_unlock+0x4d/0x240 [ 75.379890][ T5337] file_write_and_wait_range+0x22c/0x330 [ 75.382596][ T5337] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 75.385467][ T5337] generic_buffers_fsync_noflush+0x6c/0x180 [ 75.388639][ T5337] ext4_sync_file+0x332/0xb20 [ 75.390867][ T5337] ext4_buffered_write_iter+0x2ca/0x3a0 [ 75.393296][ T5337] ext4_file_write_iter+0x298/0x1bc0 [ 75.395771][ T5337] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 75.398662][ T5337] do_iter_readv_writev+0x56b/0x7f0 [ 75.401216][ T5337] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 75.403617][ T5337] ? rcu_read_lock_any_held+0xb3/0x120 [ 75.405864][ T5337] vfs_writev+0x31a/0x960 [ 75.407643][ T5337] ? __lock_acquire+0xab9/0xd20 [ 75.409667][ T5337] ? __pfx_vfs_writev+0x10/0x10 [ 75.411895][ T5337] ? __fget_files+0x2a/0x420 [ 75.414131][ T5337] ? __fget_files+0x3a0/0x420 [ 75.416436][ T5337] ? __fget_files+0x2a/0x420 [ 75.418438][ T5337] do_writev+0x14d/0x2d0 [ 75.420416][ T5337] ? __pfx_do_writev+0x10/0x10 [ 75.422672][ T5337] ? rcu_is_watching+0x15/0xb0 [ 75.424788][ T5337] ? do_syscall_64+0xbe/0x3b0 [ 75.426848][ T5337] do_syscall_64+0xfa/0x3b0 [ 75.428859][ T5337] ? lockdep_hardirqs_on+0x9c/0x150 [ 75.431257][ T5337] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.433936][ T5337] ? clear_bhb_loop+0x60/0xb0 [ 75.436038][ T5337] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.438564][ T5337] RIP: 0033:0x7f175d18e9a9 [ 75.440427][ T5337] 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 [ 75.448363][ T5337] RSP: 002b:00007f175dfaa038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 75.451783][ T5337] RAX: ffffffffffffffda RBX: 00007f175d3b5fa0 RCX: 00007f175d18e9a9 [ 75.455136][ T5337] RDX: 0000000000000001 RSI: 0000200000000140 RDI: 0000000000000004 [ 75.458537][ T5337] RBP: 00007f175d210d69 R08: 0000000000000000 R09: 0000000000000000 [ 75.461847][ T5337] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 75.465353][ T5337] R13: 0000000000000000 R14: 00007f175d3b5fa0 R15: 00007ffd6f317fa8 [ 75.469081][ T5337] [ 75.470509][ T5337] Modules linked in: [ 75.472739][ T5337] ---[ end trace 0000000000000000 ]--- [ 75.475345][ T5337] RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 [ 75.477882][ T5337] 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 [ 75.487482][ T5337] RSP: 0018:ffffc9000d4468c8 EFLAGS: 00010287 [ 75.490167][ T5337] RAX: ffffffff827873a0 RBX: 00000000ffffffcc RCX: 0000000000100000 [ 75.493709][ T5337] RDX: ffffc9000ddda000 RSI: 0000000000011a2a RDI: 0000000000011a2b [ 75.497469][ T5337] RBP: 1ffff11008863a8e R08: ffff88804431e6d3 R09: 1ffff11008863cda [ 75.500754][ T5337] R10: dffffc0000000000 R11: ffffed1008863cdb R12: 0000000000000000 [ 75.504199][ T5337] R13: 0000000000000054 R14: 1ffff11008863cdd R15: ffff88804431e6e8 [ 75.508000][ T5337] FS: 00007f175dfaa6c0(0000) GS:ffff88808d218000(0000) knlGS:0000000000000000 [ 75.511848][ T5337] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.514561][ T5337] CR2: 00007fa91f5ad000 CR3: 0000000044484000 CR4: 0000000000352ef0 [ 75.517921][ T5337] Kernel panic - not syncing: Fatal exception [ 75.520856][ T5337] Kernel Offset: disabled [ 75.522627][ T5337] Rebooting in 86400 seconds..