EXT4-fs error (device sda1) in ext4_reserve_inode_write:5947: Out of memory EXT4-fs error (device sda1) in ext4_reserve_inode_write:5947: Out of memory ------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:2870! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8120 Comm: syz-fuzzer Not tainted 4.19.194-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2870 [inline] RIP: 0010:ext4_mb_load_buddy_gfp+0x1460/0x1a90 fs/ext4/mballoc.c:1116 Code: 26 fe 9e ff e9 b9 f6 ff ff e8 dc e3 7f ff e9 b4 f4 ff ff e8 d2 e3 7f ff 48 89 ef e8 0a fe 9e ff e9 51 fa ff ff e8 c0 e3 7f ff <0f> 0b e8 b9 e3 7f ff 8b 54 24 1c 44 89 e6 48 89 ef e8 da d4 ff ff RSP: 0018:ffff8880a7447830 EFLAGS: 00010293 RAX: ffff8880927e0000 RBX: ffff8880a7447970 RCX: ffffffff81e282d3 RDX: 0000000000000000 RSI: ffffffff81e29620 RDI: 0000000000000004 RBP: ffff8882350684c0 R08: 0000000000000000 R09: 00000000fffec50d R10: 0000000000000004 R11: 0000000000000000 R12: 00000000fffec50d R13: ffff88823506a500 R14: ffff888235068b40 R15: 0000000000000010 FS: 000000c0005a3490(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c02a222085 CR3: 000000009424a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_discard_preallocations+0xaf4/0xfb0 fs/ext4/mballoc.c:4089 ext4_release_file+0x2b8/0x340 fs/ext4/file.c:98 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbf3/0x2be0 kernel/exit.c:870 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode+0x277/0x2d0 arch/x86/entry/common.c:198 retint_user+0x8/0x18 RIP: 0033:0x420d75 Code: Bad RIP value. RSP: 002b:000000c00064dea8 EFLAGS: 00000247 ORIG_RAX: ffffffffffffff02 RAX: 0000000000203000 RBX: 00007f3c167fe49c RCX: 0000000000000001 RDX: 0000000000000020 RSI: 0000000000000001 RDI: 000000c003094100 RBP: 000000c00064df28 R08: 00007f3c1687efff R09: 000000c002fe9380 R10: 000000c00001fe98 R11: 0000000000000008 R12: 0000000000000012 R13: 000000c000001e00 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 7757e53ca8747bdb ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2870 [inline] RIP: 0010:ext4_mb_load_buddy_gfp+0x1460/0x1a90 fs/ext4/mballoc.c:1116 Code: 26 fe 9e ff e9 b9 f6 ff ff e8 dc e3 7f ff e9 b4 f4 ff ff e8 d2 e3 7f ff 48 89 ef e8 0a fe 9e ff e9 51 fa ff ff e8 c0 e3 7f ff <0f> 0b e8 b9 e3 7f ff 8b 54 24 1c 44 89 e6 48 89 ef e8 da d4 ff ff RSP: 0018:ffff8880a7447830 EFLAGS: 00010293 RAX: ffff8880927e0000 RBX: ffff8880a7447970 RCX: ffffffff81e282d3 RDX: 0000000000000000 RSI: ffffffff81e29620 RDI: 0000000000000004 RBP: ffff8882350684c0 R08: 0000000000000000 R09: 00000000fffec50d R10: 0000000000000004 R11: 0000000000000000 R12: 00000000fffec50d R13: ffff88823506a500 R14: ffff888235068b40 R15: 0000000000000010 FS: 000000c0005a3490(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000420d4b CR3: 000000009424a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400