EXT4-fs (loop0): 1 orphan inode deleted EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue ext4 filesystem being mounted at /root/syzkaller.9V7ej4/6/file1 supports timestamps until 2038 (0x7fffffff) EXT4-fs error (device loop0): ext4_map_blocks:617: inode #3: block 9: comm syz-executor300: lblock 0 mapped to illegal pblock 9 (length 1) EXT4-fs error (device loop0) in ext4_reserve_inode_write:6085: Out of memory ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:2981! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 396 Comm: syz-executor300 Not tainted 5.4.242-syzkaller-00010-g39a9b92e9828 #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:2981 [inline] RIP: 0010:ext4_mb_find_by_goal+0xc10/0xc50 fs/ext4/mballoc.c:1825 Code: fc ff ff 89 d1 80 e1 07 80 c1 03 38 c1 0f 8c 0d fc ff ff 48 89 d7 e8 6f 90 c8 ff 48 8b 54 24 30 e9 fb fb ff ff e8 40 d6 98 ff <0f> 0b e8 29 97 6f ff e8 34 d6 98 ff 0f 0b e8 2d d6 98 ff 0f 0b e8 RSP: 0018:ffff8881f4ff7400 EFLAGS: 00010293 RAX: ffffffff81cb53a0 RBX: 0000000000000001 RCX: ffff8881f31cbf00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff8881f4ff7510 R08: ffffffff81cb48c9 R09: ffffed103b80b9fa R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffff8881f3bd73f0 R14: 1ffff1103e9fee90 R15: 1ffff1103e77ae7e FS: 00007f82e1d1e700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f82e1db3dc0 CR3: 00000001db5fd000 CR4: 00000000003406a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_regular_allocator+0x229/0x10d0 fs/ext4/mballoc.c:2128 ext4_mb_new_blocks+0x59a/0x2d10 fs/ext4/mballoc.c:4577 ext4_ext_map_blocks+0x1e70/0x7450 fs/ext4/extents.c:4511 ext4_map_blocks+0xa83/0x1c40 fs/ext4/inode.c:661 ext4_alloc_file_blocks+0x3b1/0xc20 fs/ext4/extents.c:4700 ext4_fallocate+0x3b5/0x570 fs/ext4/extents.c:4987 vfs_fallocate+0x551/0x6b0 fs/open.c:309 ksys_fallocate fs/open.c:332 [inline] __do_sys_fallocate fs/open.c:340 [inline] __se_sys_fallocate fs/open.c:338 [inline] __x64_sys_fallocate+0xb9/0x100 fs/open.c:338 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 Modules linked in: ---[ end trace bf263aa9d18d23fc ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2981 [inline] RIP: 0010:ext4_mb_find_by_goal+0xc10/0xc50 fs/ext4/mballoc.c:1825 Code: fc ff ff 89 d1 80 e1 07 80 c1 03 38 c1 0f 8c 0d fc ff ff 48 89 d7 e8 6f 90 c8 ff 48 8b 54 24 30 e9 fb fb ff ff e8 40 d6 98 ff <0f> 0b e8 29 97 6f ff e8 34 d6 98 ff 0f 0b e8 2d d6 98 ff 0f 0b e8 RSP: 0018:ffff8881f4ff7400 EFLAGS: 00010293 RAX: ffffffff81cb53a0 RBX: 0000000000000001 RCX: ffff8881f31cbf00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff8881f4ff7510 R08: ffffffff81cb48c9 R09: ffffed103b80b9fa R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffff8881f3bd73f0 R14: 1ffff1103e9fee90 R15: 1ffff1103e77ae7e FS: 00007f82e1d1e700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f82e1db3dc0 CR3: 00000001db5fd000 CR4: 00000000003406a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400