------------[ cut here ]------------ kernel BUG at fs/ext4/ext4.h:3355! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 7363 Comm: syz-executor.1 Not tainted 5.15.106-syzkaller-00249-g19c0ed55a470 #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:3355 [inline] RIP: 0010:ext4_mb_load_buddy_gfp+0xee5/0xf00 fs/ext4/mballoc.c:1498 Code: 11 0f c8 ff e9 0d f4 ff ff e8 87 c7 86 ff 48 c7 c7 80 81 a9 86 4c 89 fe 4c 89 f2 e8 05 93 9a 00 e9 87 f2 ff ff e8 6b c7 86 ff <0f> 0b e8 64 c7 86 ff 0f 0b e8 5d c7 86 ff 0f 0b 66 2e 0f 1f 84 00 RSP: 0018:ffffc90000f07b80 EFLAGS: 00010293 RAX: ffffffff81e92455 RBX: 00000000ffffffff RCX: ffff88810d0fbb40 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000001 RBP: ffffc90000f07c10 R08: ffffffff81e91684 R09: ffffed1027f35cf9 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff110226c4e79 R13: ffff8881136273c8 R14: 0000000000000001 R15: ffff888116852000 FS: 0000555556ab9400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c82f000 CR3: 000000010ed6a000 CR4: 00000000003506b0 DR0: 00000000ffff070c DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: ext4_discard_preallocations+0x79c/0xef0 fs/ext4/mballoc.c:5033 ext4_release_file+0x16e/0x310 fs/ext4/file.c:151 __fput+0x3fe/0x910 fs/file_table.c:280 ____fput+0x15/0x20 fs/file_table.c:308 task_work_run+0x129/0x190 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xc4/0xe0 kernel/entry/common.c:175 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:301 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f474a2bd01b 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:00007ffffcf5ab80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00007f474a2bd01b RDX: 00007f4749e80510 RSI: ffffffffffffffff RDI: 0000000000000005 RBP: 00007f474a42c980 R08: 0000000000000000 R09: 00007f4749e7f000 R10: 00007f4749e80518 R11: 0000000000000293 R12: 0000000000271351 R13: 00007ffffcf5ac80 R14: 00007f474a42b050 R15: 0000000000000032 Modules linked in: ---[ end trace 705ff4bba60c4c16 ]--- RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3355 [inline] RIP: 0010:ext4_mb_load_buddy_gfp+0xee5/0xf00 fs/ext4/mballoc.c:1498 Code: 11 0f c8 ff e9 0d f4 ff ff e8 87 c7 86 ff 48 c7 c7 80 81 a9 86 4c 89 fe 4c 89 f2 e8 05 93 9a 00 e9 87 f2 ff ff e8 6b c7 86 ff <0f> 0b e8 64 c7 86 ff 0f 0b e8 5d c7 86 ff 0f 0b 66 2e 0f 1f 84 00 RSP: 0018:ffffc90000f07b80 EFLAGS: 00010293 RAX: ffffffff81e92455 RBX: 00000000ffffffff RCX: ffff88810d0fbb40 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000001 RBP: ffffc90000f07c10 R08: ffffffff81e91684 R09: ffffed1027f35cf9 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff110226c4e79 R13: ffff8881136273c8 R14: 0000000000000001 R15: ffff888116852000 FS: 0000555556ab9400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f21490196b4 CR3: 000000010ed6a000 CR4: 00000000003506a0 DR0: 00000000ffff070c DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400