program: syz_mount_image$ext4(&(0x7f00000003c0)='ext4\x00', &(0x7f0000000480)='./file1\x00', 0x10, &(0x7f0000000140)={[{@norecovery}]}, 0xed, 0x474, &(0x7f0000000b80)="$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") fsopen(&(0x7f0000000000)='cgroup2\x00', 0x0) r0 = epoll_create1(0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./dev\x00', &(0x7f0000000100)='devtmpfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./mnt\x00', 0x1ff) mount(&(0x7f0000000300)=@filename='./dev/mtdblock0\x00', &(0x7f0000000200)='./mnt\x00', &(0x7f0000000400)='jffs2\x00', 0x0, &(0x7f0000000800)='rp_size=0\x00') ioctl$FS_IOC_SETFLAGS(r0, 0x40088a01, &(0x7f0000000000)=0x100) open(&(0x7f0000000180)='./bus\x00', 0x14927e, 0x0) mount(&(0x7f0000000280)=@loop={'/dev/loop', 0x0}, &(0x7f00000003c0)='./bus\x00', 0x0, 0x5000, 0x0) r1 = socket$inet_udp(0x2, 0x2, 0x0) setsockopt$SO_TIMESTAMPING(r1, 0x1, 0x25, &(0x7f0000000080)=0x21ee, 0x4) r2 = socket$key(0xf, 0x3, 0x2) sendmsg$key(r2, &(0x7f0000000040)={0xa, 0x0, &(0x7f0000000340)={&(0x7f0000000080)={0x2, 0x2, 0x0, 0x2, 0xc, 0x0, 0x1, 0x0, [@sadb_address={0x3, 0x6, 0x0, 0x0, 0x0, @in={0x2, 0x4e21, @rand_addr=0x64010101}}, @sadb_sa={0x2, 0x1, 0x0, 0x0, 0x0, 0xfb}, @sadb_address={0x3, 0x5, 0x0, 0x0, 0x0, @in={0x2, 0x4e22, @empty}}, @sadb_x_nat_t_type={0x1}, @sadb_key={0x1, 0x8}]}, 0x60}, 0x1, 0x7}, 0x40880) r3 = open(&(0x7f0000000000)='./bus\x00', 0x8000, 0xa0) ioctl$LOOP_SET_STATUS64(r3, 0x4c04, &(0x7f0000000540)={0x0, 0x0, 0x0, 0x0, 0x8005, 0x0, 0x0, 0x14, 0xd, "ef359f413bb9386ff7d6a4ae6dddfbd1ce5d29c2ee5e5ca9000ff8ee09e7376b7a5ff537ed73ac58818d78c660e677df8dc905b90242b7c528a076d2f6a00400", "036c5bc6780820d1cbf7966d61fdcf335263bd9b0abdc2542ded71038259ca171ce1a311ef545032d71e14ef3dc177e9b48b001d00", "f28359738e229a4c66810000000000d300e6d602000000000000000000000001", [0x8]}) r4 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x141442, 0x2b) pwritev2(r4, &(0x7f00000001c0)=[{&(0x7f0000000080)="ff", 0xfdef}], 0x1, 0xe7b, 0x0, 0x86) [ 94.386277][ T4637] Bluetooth: hci0: command tx timeout [ 94.404688][ T5310] loop0: detected capacity change from 0 to 512 [ 94.515706][ T5310] EXT4-fs (loop0): invalid journal inode [ 94.518197][ T5310] EXT4-fs (loop0): can't get journal size [ 94.582343][ T5310] EXT4-fs (loop0): 1 truncate cleaned up [ 94.614334][ T5310] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 94.674424][ T5310] jffs2: notice: (5310) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found. [ 94.744211][ T5310] loop0: detected capacity change from 512 to 64 [ 94.769566][ T5310] syz.0.0: attempt to access beyond end of device [ 94.769566][ T5310] loop0: rw=2049, sector=130, nr_sectors = 24 limit=64 [ 94.776054][ T5310] EXT4-fs warning (device loop0): ext4_end_bio:364: I/O error 10 writing to inode 15 starting block 65) [ 94.782279][ T5310] Buffer I/O error on device loop0, logical block 65 [ 94.785379][ T5310] Buffer I/O error on device loop0, logical block 66 [ 94.788436][ T5310] Buffer I/O error on device loop0, logical block 67 [ 94.791310][ T5310] Buffer I/O error on device loop0, logical block 68 [ 94.794729][ T5310] Buffer I/O error on device loop0, logical block 69 [ 94.797678][ T5310] Buffer I/O error on device loop0, logical block 70 [ 94.800315][ T5310] Buffer I/O error on device loop0, logical block 71 [ 94.803224][ T5310] Buffer I/O error on device loop0, logical block 72 [ 94.807303][ T5310] Buffer I/O error on device loop0, logical block 73 [ 94.810264][ T5310] Buffer I/O error on device loop0, logical block 74 [ 94.925656][ T5310] ------------[ cut here ]------------ [ 94.928658][ T5310] kernel BUG at fs/ext4/mballoc.c:4781! [ 94.931139][ T5310] Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI [ 94.933952][ T5310] CPU: 0 UID: 0 PID: 5310 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 94.937852][ T5310] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 94.942068][ T5310] RIP: 0010:ext4_mb_use_inode_pa+0x6bf/0x720 [ 94.944458][ T5310] Code: e8 e6 0f a2 ff 48 ba 00 00 00 00 00 fc ff df e9 d7 fa ff ff e8 a2 c7 30 ff 90 0f 0b e8 9a c7 30 ff 90 0f 0b e8 92 c7 30 ff 90 <0f> 0b e8 8a c7 30 ff 90 0f 0b 48 8b 0c 24 48 83 c1 54 80 e1 07 80 [ 94.951965][ T5310] RSP: 0018:ffffc9000e11e920 EFLAGS: 00010287 [ 94.954403][ T5310] RAX: ffffffff82966d2e RBX: 00000000fffffffc RCX: 0000000000100000 [ 94.957556][ T5310] RDX: ffffc9000ebb2000 RSI: 0000000000009a21 RDI: 0000000000009a22 [ 94.960636][ T5310] RBP: 1ffff1100879e6ef R08: ffff888043cf7d2b R09: 1ffff1100879efa5 [ 94.963719][ T5310] R10: dffffc0000000000 R11: ffffed100879efa6 R12: 0000000000000000 [ 94.966908][ T5310] R13: 0000000000000034 R14: 1ffff1100879efa8 R15: ffff888043cf7d40 [ 94.969893][ T5310] FS: 00007f9f0a2f16c0(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000 [ 94.973037][ T5310] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 94.975467][ T5310] CR2: 000020000000f000 CR3: 000000004369e000 CR4: 0000000000352ef0 [ 94.978457][ T5310] Call Trace: [ 94.979950][ T5310] [ 94.981256][ T5310] ext4_mb_use_preallocated+0x638/0x13e0 [ 94.983402][ T5310] ext4_mb_new_blocks+0x5a0/0x4530 [ 94.985557][ T5310] ? rcu_is_watching+0x16/0xb0 [ 94.987538][ T5310] ? __pfx_ext4_new_meta_blocks+0x10/0x10 [ 94.989817][ T5310] ? __pfx_ext4_mb_new_blocks+0x10/0x10 [ 94.992089][ T5310] ? ext4_block_to_path+0x382/0x700 [ 94.994308][ T5310] ext4_ind_map_blocks+0xe96/0x22a0 [ 94.996408][ T5310] ? __pfx_ext4_ind_map_blocks+0x10/0x10 [ 94.998675][ T5310] ? kasan_save_track+0x4f/0x80 [ 95.000740][ T5310] ? ext4_map_blocks+0x77d/0x12c0 [ 95.002915][ T5310] ? down_write+0x16b/0x200 [ 95.004769][ T5310] ext4_map_create_blocks+0xbb/0x530 [ 95.006801][ T5310] ? ext4_fc_track_inode+0xf3/0x3f0 [ 95.009081][ T5310] ext4_map_blocks+0x791/0x12c0 [ 95.010964][ T5310] ? __pfx_ext4_map_blocks+0x10/0x10 [ 95.012792][ T5310] ext4_do_writepages+0x1901/0x4770 [ 95.014798][ T5310] ? __lock_acquire+0x683/0x2cf0 [ 95.016928][ T5310] ? __pfx_ext4_do_writepages+0x10/0x10 [ 95.019257][ T5310] ? __lock_acquire+0x683/0x2cf0 [ 95.021319][ T5310] ? __free_object+0x432/0x5d0 [ 95.023347][ T5310] ? lockdep_hardirqs_on+0x7b/0x110 [ 95.025567][ T5310] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 95.027901][ T5310] ? debug_object_free+0x29c/0x340 [ 95.029659][ T5310] ? ext4_writepages+0x205/0x3b0 [ 95.031514][ T5310] ? ext4_writepages+0x205/0x3b0 [ 95.033733][ T5310] ext4_writepages+0x241/0x3b0 [ 95.035789][ T5310] ? __pfx_ext4_writepages+0x10/0x10 [ 95.037923][ T5310] ? __pfx_ext4_writepages+0x10/0x10 [ 95.040068][ T5310] do_writepages+0x338/0x560 [ 95.041961][ T5310] ? do_raw_spin_unlock+0x4d/0x200 [ 95.044136][ T5310] file_write_and_wait_range+0x36e/0x440 [ 95.046507][ T5310] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 95.049080][ T5310] ext4_sync_file+0x252/0xa40 [ 95.051098][ T5310] ext4_buffered_write_iter+0x2d0/0x380 [ 95.053339][ T5310] ext4_file_write_iter+0xae4/0x1cd0 [ 95.055583][ T5310] ? __lock_acquire+0x683/0x2cf0 [ 95.057609][ T5310] ? __pfx_aa_file_perm+0x10/0x10 [ 95.059645][ T5310] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 95.061974][ T5310] ? preempt_schedule_thunk+0x16/0x40 [ 95.064202][ T5310] do_iter_readv_writev+0x612/0x8c0 [ 95.066510][ T5310] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 95.068941][ T5310] vfs_writev+0x343/0x990 [ 95.070754][ T5310] ? __pfx_vfs_writev+0x10/0x10 [ 95.072794][ T5310] ? __fget_files+0x2a/0x420 [ 95.074716][ T5310] ? __fget_files+0x3a2/0x420 [ 95.076717][ T5310] ? __fget_files+0x2a/0x420 [ 95.078637][ T5310] __se_sys_pwritev2+0x177/0x2a0 [ 95.080813][ T5310] ? __pfx___se_sys_pwritev2+0x10/0x10 [ 95.083091][ T5310] ? __x64_sys_pwritev2+0x20/0xc0 [ 95.085282][ T5310] do_syscall_64+0x166/0x520 [ 95.087107][ T5310] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.089589][ T5310] ? clear_bhb_loop+0x70/0xc0 [ 95.091486][ T5310] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.093971][ T5310] RIP: 0033:0x7f9f0939e0d9 [ 95.095800][ T5310] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 95.104168][ T5310] RSP: 002b:00007f9f0a2f0fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 [ 95.108116][ T5310] RAX: ffffffffffffffda RBX: 00007f9f09625fa0 RCX: 00007f9f0939e0d9 [ 95.111454][ T5310] RDX: 0000000000000001 RSI: 00002000000001c0 RDI: 000000000000000a [ 95.114704][ T5310] RBP: 00007f9f09435024 R08: 0000000000000000 R09: 0000000000000086 [ 95.117849][ T5310] R10: 0000000000000e7b R11: 0000000000000246 R12: 0000000000000000 [ 95.121062][ T5310] R13: 00007f9f09626038 R14: 00007f9f09625fa0 R15: 00007fffbf2c66d8 [ 95.124312][ T5310] [ 95.125711][ T5310] Modules linked in: [ 95.128365][ T5310] ---[ end trace 0000000000000000 ]--- [ 95.130917][ T5310] RIP: 0010:ext4_mb_use_inode_pa+0x6bf/0x720 [ 95.133660][ T5310] Code: e8 e6 0f a2 ff 48 ba 00 00 00 00 00 fc ff df e9 d7 fa ff ff e8 a2 c7 30 ff 90 0f 0b e8 9a c7 30 ff 90 0f 0b e8 92 c7 30 ff 90 <0f> 0b e8 8a c7 30 ff 90 0f 0b 48 8b 0c 24 48 83 c1 54 80 e1 07 80 [ 95.142136][ T5310] RSP: 0018:ffffc9000e11e920 EFLAGS: 00010287 [ 95.144693][ T5310] RAX: ffffffff82966d2e RBX: 00000000fffffffc RCX: 0000000000100000 [ 95.148684][ T5310] RDX: ffffc9000ebb2000 RSI: 0000000000009a21 RDI: 0000000000009a22 [ 95.152970][ T5310] RBP: 1ffff1100879e6ef R08: ffff888043cf7d2b R09: 1ffff1100879efa5 [ 95.156732][ T5310] R10: dffffc0000000000 R11: ffffed100879efa6 R12: 0000000000000000 [ 95.160117][ T5310] R13: 0000000000000034 R14: 1ffff1100879efa8 R15: ffff888043cf7d40 [ 95.163497][ T5310] FS: 00007f9f0a2f16c0(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000 [ 95.167174][ T5310] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 95.169873][ T5310] CR2: 000020000000f000 CR3: 000000004369e000 CR4: 0000000000352ef0 [ 95.173261][ T5310] Kernel panic - not syncing: Fatal exception [ 95.175818][ T5310] Kernel Offset: disabled [ 95.177532][ T5310] Rebooting in 86400 seconds..