EXT4-fs (loop5): mounted filesystem without journal. Opts: discard,sysvgroups,dioread_lock,grpquota,auto_da_alloc,resgid=0x0000000000000000,barrier,init_itable=0x000000000000c202,usrquota,,errors=continue ext4 filesystem being mounted at /root/syzkaller-testdir4017179921/syzkaller.nvV9tG/70/file1 supports timestamps until 2038 (0x7fffffff) EXT4-fs error (device loop5) in ext4_reserve_inode_write:5877: Corrupt filesystem EXT4-fs error (device loop5): ext4_dirty_inode:6087: inode #16: comm syz-executor.5: mark_inode_dirty error ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3247! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3429 Comm: syz-executor.5 Not tainted 5.10.179-syzkaller-00312-g571f442f6752 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3247 [inline] RIP: 0010:ext4_mb_find_by_goal+0xe18/0xe50 fs/ext4/mballoc.c:1885 Code: 24 30 e9 be fb ff ff e8 66 c0 89 ff 48 bb 00 00 00 00 00 fc ff df e9 23 f7 ff ff e8 52 c0 89 ff e9 05 f7 ff ff e8 48 c0 89 ff <0f> 0b e8 21 cf c8 02 e8 3c c0 89 ff 0f 0b e8 35 c0 89 ff 0f 0b e8 RSP: 0018:ffffc90001307220 EFLAGS: 00010287 RAX: ffffffff81e0b9e8 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90003875000 RSI: 0000000000000d8c RDI: 0000000000000d8d RBP: ffffc90001307330 R08: ffffffff81e0acff R09: ffffed102fa8a185 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88810aa103c8 R13: 0000000000000001 R14: 1ffff11021542079 R15: 1ffff92000260e54 FS: 00007f57b6838700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f35c2e4dfb8 CR3: 0000000120238000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_regular_allocator+0x249/0x2030 fs/ext4/mballoc.c:2321 ext4_mb_new_blocks+0xfb1/0x4430 fs/ext4/mballoc.c:5038 ext4_ext_map_blocks+0x190e/0x6be0 fs/ext4/extents.c:4281 ext4_map_blocks+0xaa7/0x1f00 fs/ext4/inode.c:646 ext4_alloc_file_blocks+0x3f4/0xcd0 fs/ext4/extents.c:4469 ext4_fallocate+0x853/0x1cb0 fs/ext4/extents.c:4755 vfs_fallocate+0x492/0x570 fs/open.c:310 ksys_fallocate fs/open.c:333 [inline] __do_sys_fallocate fs/open.c:341 [inline] __se_sys_fallocate fs/open.c:339 [inline] __x64_sys_fallocate+0xc0/0x110 fs/open.c:339 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f57b7ac5389 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f57b6838168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f57b7be4f80 RCX: 00007f57b7ac5389 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f57b7b10493 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000044de R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff0c97a49f R14: 00007f57b6838300 R15: 0000000000022000 Modules linked in: ---[ end trace 68cae23320e0a391 ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3247 [inline] RIP: 0010:ext4_mb_find_by_goal+0xe18/0xe50 fs/ext4/mballoc.c:1885 Code: 24 30 e9 be fb ff ff e8 66 c0 89 ff 48 bb 00 00 00 00 00 fc ff df e9 23 f7 ff ff e8 52 c0 89 ff e9 05 f7 ff ff e8 48 c0 89 ff <0f> 0b e8 21 cf c8 02 e8 3c c0 89 ff 0f 0b e8 35 c0 89 ff 0f 0b e8 RSP: 0018:ffffc90001307220 EFLAGS: 00010287 RAX: ffffffff81e0b9e8 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc90003875000 RSI: 0000000000000d8c RDI: 0000000000000d8d RBP: ffffc90001307330 R08: ffffffff81e0acff R09: ffffed102fa8a185 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88810aa103c8 R13: 0000000000000001 R14: 1ffff11021542079 R15: 1ffff92000260e54 FS: 00007f57b6838700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb67b198718 CR3: 0000000120238000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400