------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3331! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 26894 Comm: syz-executor.5 Tainted: G W 6.1.25-syzkaller-00268-gae6e8fb652a7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/16/2023 RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3331 [inline] RIP: 0010:ext4_mb_load_buddy_gfp+0xef8/0xf10 fs/ext4/mballoc.c:1448 Code: 0e 6f c6 ff e9 de f3 ff ff e8 44 05 81 ff 48 c7 c7 a0 84 8b 86 4c 89 ee 48 89 da e8 b2 31 a7 00 e9 50 f2 ff ff e8 28 05 81 ff <0f> 0b e8 21 05 81 ff 0f 0b e8 1a 05 81 ff 0f 0b 0f 1f 84 00 00 00 RSP: 0018:ffffc900027b7b08 EFLAGS: 00010293 RAX: ffffffff81f2a658 RBX: 0000000000000001 RCX: ffff88815e6eb900 RDX: 0000000000000000 RSI: 00000000ffffdc65 RDI: 0000000000000001 RBP: ffffc900027b7b90 R08: ffffffff81f2984c R09: ffffed10291ac322 R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000ffffdc65 R13: ffff88813f454000 R14: ffff8881108163a8 R15: ffff888110816018 FS: 000055555672b400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555571cd728 CR3: 0000000140734000 CR4: 00000000003506b0 Call Trace: ext4_discard_preallocations+0x79c/0xef0 fs/ext4/mballoc.c:5021 ext4_release_file+0x16e/0x310 fs/ext4/file.c:166 __fput+0x3ab/0x870 fs/file_table.c:320 ____fput+0x15/0x20 fs/file_table.c:348 task_work_run+0x24d/0x2e0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x8b/0xa0 kernel/entry/common.c:171 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:297 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5b54c3e01b Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007fffdd9ec920 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00007f5b54c3e01b RDX: 0000000000000000 RSI: 00007f5b546dca00 RDI: 0000000000000005 RBP: 00007f5b54dad980 R08: 0000000000000000 R09: 00000000285c31dc R10: 0000000000000000 R11: 0000000000000293 R12: 00000000002f3319 R13: 00007fffdd9eca20 R14: 00007fffdd9eca40 R15: 0000000000000032 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3331 [inline] RIP: 0010:ext4_mb_load_buddy_gfp+0xef8/0xf10 fs/ext4/mballoc.c:1448 Code: 0e 6f c6 ff e9 de f3 ff ff e8 44 05 81 ff 48 c7 c7 a0 84 8b 86 4c 89 ee 48 89 da e8 b2 31 a7 00 e9 50 f2 ff ff e8 28 05 81 ff <0f> 0b e8 21 05 81 ff 0f 0b e8 1a 05 81 ff 0f 0b 0f 1f 84 00 00 00 RSP: 0018:ffffc900027b7b08 EFLAGS: 00010293 RAX: ffffffff81f2a658 RBX: 0000000000000001 RCX: ffff88815e6eb900 RDX: 0000000000000000 RSI: 00000000ffffdc65 RDI: 0000000000000001 RBP: ffffc900027b7b90 R08: ffffffff81f2984c R09: ffffed10291ac322 R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000ffffdc65 R13: ffff88813f454000 R14: ffff8881108163a8 R15: ffff888110816018 FS: 000055555672b400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002055f000 CR3: 0000000140734000 CR4: 00000000003506a0