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kernel BUG at fs/ext4/ext4.h:2985!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4673 Comm: syz.4.1150 Not tainted 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2985 [inline]
RIP: 0010:ext4_mb_load_buddy_gfp+0xeb2/0xed0 fs/ext4/mballoc.c:1117
Code: ff e8 82 5e cd ff e9 82 f3 ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c c8 f3 ff ff e8 88 5e cd ff e9 be f3 ff ff e8 ce 63 9f ff <0f> 0b e8 c7 63 9f ff 0f 0b e8 c0 63 9f ff 0f 0b e8 b9 63 9f ff 0f
RSP: 0018:ffff8881d3b3f748 EFLAGS: 00010293
RAX: ffffffff81c01b12 RBX: 0000000000000001 RCX: ffff8881e2f24ec0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00000000ffffcd4b
RBP: ffff8881d3b3f7d0 R08: dffffc0000000000 R09: ffff8881d3b3f828
R10: ffffed103a767f0c R11: 1ffff1103a767f05 R12: 1ffff11039b6247e
R13: ffff8881cdb10000 R14: ffff8881cdb12018 R15: 00000000ffffcd4b
FS:  00007fe0753b46c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f551a444000 CR3: 00000001e0721000 CR4: 00000000003426a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_discard_preallocations+0x5b2/0xae0 fs/ext4/mballoc.c:4124
 ext4_release_file+0x171/0x320 fs/ext4/file.c:98
 __fput+0x2a3/0x730 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x146/0x170 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0xa43/0x2660 kernel/exit.c:861
 do_group_exit+0x13e/0x300 kernel/exit.c:984
 get_signal+0xdee/0x13d0 kernel/signal.c:2738
 do_signal+0xad/0xda0 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0xc4/0x1b0 arch/x86/entry/common.c:159
 prepare_exit_to_usermode+0x18e/0x1f0 arch/x86/entry/common.c:194
 syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
 do_syscall_64+0x13e/0x170 arch/x86/entry/common.c:300
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7fe076d4b969
Code: Bad RIP value.
RSP: 002b:00007fe0753b40e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fe076f72fa8 RCX: 00007fe076d4b969
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fe076f72fac
RBP: 00007fe076f72fa0 R08: 00007fff8afe50b0 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fe076f72fac
R13: 0000000000000000 R14: 00007fff8afdf3e0 R15: 00007fff8afdf4c8
Modules linked in:
---[ end trace 0c8d074231bdc844 ]---
RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2985 [inline]
RIP: 0010:ext4_mb_load_buddy_gfp+0xeb2/0xed0 fs/ext4/mballoc.c:1117
Code: ff e8 82 5e cd ff e9 82 f3 ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c c8 f3 ff ff e8 88 5e cd ff e9 be f3 ff ff e8 ce 63 9f ff <0f> 0b e8 c7 63 9f ff 0f 0b e8 c0 63 9f ff 0f 0b e8 b9 63 9f ff 0f
RSP: 0018:ffff8881d3b3f748 EFLAGS: 00010293
RAX: ffffffff81c01b12 RBX: 0000000000000001 RCX: ffff8881e2f24ec0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00000000ffffcd4b
RBP: ffff8881d3b3f7d0 R08: dffffc0000000000 R09: ffff8881d3b3f828
R10: ffffed103a767f0c R11: 1ffff1103a767f05 R12: 1ffff11039b6247e
R13: ffff8881cdb10000 R14: ffff8881cdb12018 R15: 00000000ffffcd4b
FS:  00007fe0753b46c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5bf9153da0 CR3: 00000001ecb3f000 CR4: 00000000003426a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400