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kernel BUG at fs/ext4/ext4.h:3241!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 10387 Comm: syz-executor.2 Not tainted 6.3.0-syzkaller-13390-g2e1e1337881b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:ext4_get_group_info+0x3c9/0x430 fs/ext4/ext4.h:3241
Code: ff 48 c7 c2 00 21 63 8a be 06 03 00 00 48 c7 c7 60 21 63 8a c6 05 6b 40 35 0c 01 e8 11 b7 35 ff e9 7e fd ff ff e8 27 ea 54 ff <0f> 0b e8 40 b2 a7 ff e9 8f fc ff ff e8 36 b2 a7 ff e9 c9 fc ff ff
RSP: 0018:ffffc9000315eca8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000fffff01a RCX: 0000000000000000
RDX: ffff8880787c5940 RSI: ffffffff822f5ab9 RDI: 0000000000000004
RBP: ffff888091264000 R08: 0000000000000004 R09: 0000000000000001
R10: 00000000fffff01a R11: 0000000000000000 R12: ffff88803f104000
R13: ffff88803f104678 R14: 0000000000000001 R15: ffff8880754fd2b8
FS:  00007f8bb1270700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558a482d6a78 CR3: 000000002b0ff000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ext4_mb_load_buddy_gfp+0xc9/0x13c0 fs/ext4/mballoc.c:1446
 ext4_discard_preallocations+0x521/0xf60 fs/ext4/mballoc.c:5226
 ext4_truncate+0xd5a/0x1340 fs/ext4/inode.c:4148
 ext4_truncate_failed_write fs/ext4/truncate.h:22 [inline]
 ext4_write_begin+0x8b0/0x1030 fs/ext4/inode.c:1231
 ext4_da_write_begin+0x223/0x8c0 fs/ext4/inode.c:2891
 generic_perform_write+0x256/0x570 mm/filemap.c:3923
 ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:289
 ext4_file_write_iter+0xbe0/0x1740 fs/ext4/file.c:710
 __kernel_write_iter+0x262/0x7a0 fs/read_write.c:517
 dump_emit_page fs/coredump.c:886 [inline]
 dump_user_range+0x23c/0x710 fs/coredump.c:913
 elf_core_dump+0x277e/0x36e0 fs/binfmt_elf.c:2142
 do_coredump+0x2ed0/0x3fb0 fs/coredump.c:762
 get_signal+0x1bff/0x25b0 kernel/signal.c:2860
 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:310
 exc_page_fault+0xc0/0x170 arch/x86/mm/fault.c:1593
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 002b:0000000020000473 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f8bb05abf80 RCX: 00007f8bb048c169
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007f8bb1270050
RBP: 00007f8bb04e7ca1 R08: 0000000000000000 R09: 0000000000000058
R10: 00007f8bb1270050 R11: 0000000000000246 R12: 0000000000000058
R13: 00007ffd2bfbc64f R14: 00007f8bb1270300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_get_group_info+0x3c9/0x430 fs/ext4/ext4.h:3241
Code: ff 48 c7 c2 00 21 63 8a be 06 03 00 00 48 c7 c7 60 21 63 8a c6 05 6b 40 35 0c 01 e8 11 b7 35 ff e9 7e fd ff ff e8 27 ea 54 ff <0f> 0b e8 40 b2 a7 ff e9 8f fc ff ff e8 36 b2 a7 ff e9 c9 fc ff ff
RSP: 0018:ffffc9000315eca8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000fffff01a RCX: 0000000000000000
RDX: ffff8880787c5940 RSI: ffffffff822f5ab9 RDI: 0000000000000004
RBP: ffff888091264000 R08: 0000000000000004 R09: 0000000000000001
R10: 00000000fffff01a R11: 0000000000000000 R12: ffff88803f104000
R13: ffff88803f104678 R14: 0000000000000001 R15: ffff8880754fd2b8
FS:  00007f8bb1270700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2dd25000 CR3: 000000002b0ff000 CR4: 0000000000350ef0