------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3331! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 312 Comm: syz-executor160 Not tainted 6.1.25-syzkaller-00226-g7d346b229c78 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 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 54 0b 81 ff 48 c7 c7 20 84 8b 86 4c 89 ee 48 89 da e8 52 32 a7 00 e9 50 f2 ff ff e8 38 0b 81 ff <0f> 0b e8 31 0b 81 ff 0f 0b e8 2a 0b 81 ff 0f 0b 0f 1f 84 00 00 00 RSP: 0018:ffffc90000ec7988 EFLAGS: 00010293 RAX: ffffffff81f29378 RBX: 0000000000000001 RCX: ffff88810f9fb900 RDX: 0000000000000000 RSI: 00000000ffff821c RDI: 0000000000000001 RBP: ffffc90000ec7a10 R08: ffffffff81f2856c R09: ffffed1024298a79 R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000ffff821c R13: ffff8881106d4000 R14: ffff8881098673a8 R15: ffff888109867018 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f02b644a000 CR3: 0000000120595000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xbb0/0x2910 kernel/exit.c:870 do_group_exit+0x21a/0x2d0 kernel/exit.c:1020 __do_sys_exit_group kernel/exit.c:1031 [inline] __se_sys_exit_group kernel/exit.c:1029 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1029 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f02be83e229 Code: Unable to access opcode bytes at 0x7f02be83e1ff. RSP: 002b:00007fff71ba0f68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f02be8c4470 RCX: 00007f02be83e229 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffb8 R09: 0000000000f0b5ff R10: 0000000000000000 R11: 0000000000000246 R12: 00007f02be8c4470 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 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 54 0b 81 ff 48 c7 c7 20 84 8b 86 4c 89 ee 48 89 da e8 52 32 a7 00 e9 50 f2 ff ff e8 38 0b 81 ff <0f> 0b e8 31 0b 81 ff 0f 0b e8 2a 0b 81 ff 0f 0b 0f 1f 84 00 00 00 RSP: 0018:ffffc90000ec7988 EFLAGS: 00010293 RAX: ffffffff81f29378 RBX: 0000000000000001 RCX: ffff88810f9fb900 RDX: 0000000000000000 RSI: 00000000ffff821c RDI: 0000000000000001 RBP: ffffc90000ec7a10 R08: ffffffff81f2856c R09: ffffed1024298a79 R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000ffff821c R13: ffff8881106d4000 R14: ffff8881098673a8 R15: ffff888109867018 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f02be840b20 CR3: 00000001204a3000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400