------------[ cut here ]------------
kernel BUG at fs/ext4/ext4.h:3246!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 25586 Comm: syz-executor.3 Tainted: G        W         5.10.84-syzkaller-00439-ge2aed161fc26 #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:3246 [inline]
RIP: 0010:ext4_mb_load_buddy_gfp+0xe1b/0xe90 fs/ext4/mballoc.c:1174
Code: ff e8 49 1e c2 ff e9 21 f4 ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 67 f4 ff ff e8 4f 1e c2 ff e9 5d f4 ff ff e8 35 49 88 ff <0f> 0b e8 2e 49 88 ff 4c 89 ff e8 f6 52 c7 ff e9 81 fc ff ff e8 1c
RSP: 0018:ffffc9000217f6d8 EFLAGS: 00010293
RAX: ffffffff81e4953b RBX: 0000000000000008 RCX: ffff88815893e2c0
RDX: 0000000000000000 RSI: 00000000fffe5983 RDI: 0000000000000008
RBP: ffffc9000217f770 R08: ffffffff81e4880f R09: ffffed1021bf42c7
R10: ffffed1021bf42c7 R11: 0000000000000000 R12: 1ffff1102170d079
R13: ffff88810b869000 R14: ffff88810b869040 R15: 00000000fffe5983
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ff22000 CR3: 0000000107b9a000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_discard_preallocations+0x813/0xf40 fs/ext4/mballoc.c:4431
 ext4_release_file+0x17a/0x320 fs/ext4/file.c:152
 __fput+0x348/0x7d0 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x147/0x1b0 kernel/task_work.c:154
 exit_task_work include/linux/task_work.h:30 [inline]
 do_exit+0x70e/0x23a0 kernel/exit.c:813
 do_group_exit+0x16a/0x2d0 kernel/exit.c:910
 get_signal+0x131f/0x1f70 kernel/signal.c:2780
 arch_do_signal+0x8d/0x620 arch/x86/kernel/signal.c:805
 exit_to_user_mode_loop kernel/entry/common.c:161 [inline]
 exit_to_user_mode_prepare+0xaa/0xe0 kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266
 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f548dd80e99
Code: Unable to access opcode bytes at RIP 0x7f548dd80e6f.
RSP: 002b:00007f548ce73218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f548de942a8 RCX: 00007f548dd80e99
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f548de942a8
RBP: 00007f548de942a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f548de942ac
R13: 00007ffd525544ef R14: 00007f548ce73300 R15: 0000000000022000
Modules linked in:
---[ end trace a8dc318bb9ecb6f9 ]---
RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3246 [inline]
RIP: 0010:ext4_mb_load_buddy_gfp+0xe1b/0xe90 fs/ext4/mballoc.c:1174
Code: ff e8 49 1e c2 ff e9 21 f4 ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 67 f4 ff ff e8 4f 1e c2 ff e9 5d f4 ff ff e8 35 49 88 ff <0f> 0b e8 2e 49 88 ff 4c 89 ff e8 f6 52 c7 ff e9 81 fc ff ff e8 1c
RSP: 0018:ffffc9000217f6d8 EFLAGS: 00010293