------------[ cut here ]------------
kernel BUG at fs/ext4/mballoc.c:4332!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 11610 Comm: syz-executor.0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:ext4_mb_release_inode_pa+0x9d0/0x9e0 fs/ext4/mballoc.c:4332
Code: 80 c2 03 38 c2 0f 8c 4e fe ff ff 48 89 df 41 89 ce e8 44 5a cc ff 44 89 f1 e9 3b fe ff ff e8 b7 6a 92 ff 0f 0b e8 b0 6a 92 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41 57
RSP: 0018:ffffc900025bdb80 EFLAGS: 00010293
RAX: ffffffff81d13b60 RBX: 0000000000000016 RCX: ffff88810d180000
RDX: 0000000000000000 RSI: 0000000000000016 RDI: 0000000000000000
RBP: ffffc900025bdcd0 R08: 0000000000000004 R09: 0000000000000003
R10: fffff520004b7b8c R11: 1ffff920004b7b8c R12: dffffc0000000000
R13: 000000000003b3a0 R14: 0000000000003b3a R15: ffff8881229027e0
FS:  00007f923714f6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000001ffffec0 CR3: 0000000111beb000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_mb_discard_group_preallocations+0xba1/0xdd0 fs/ext4/mballoc.c:4478
 ext4_mb_discard_preallocations fs/ext4/mballoc.c:5044 [inline]
 ext4_mb_discard_preallocations_should_retry+0x156/0x600 fs/ext4/mballoc.c:5065
 ext4_mb_new_blocks+0x3142/0x42f0 fs/ext4/mballoc.c:5268
 ext4_new_meta_blocks+0x14f/0x340 fs/ext4/balloc.c:732
 ext4_ext_grow_indepth fs/ext4/extents.c:1322 [inline]
 ext4_ext_create_new_leaf fs/ext4/extents.c:1426 [inline]
 ext4_ext_insert_extent+0xfea/0x4530 fs/ext4/extents.c:2098
 ext4_ext_map_blocks+0x148f/0x5d40 fs/ext4/extents.c:4356
 ext4_map_blocks+0x978/0x1bc0 fs/ext4/inode.c:674
 _ext4_get_block+0x1bb/0x4b0 fs/ext4/inode.c:817
 ext4_get_block+0x39/0x50 fs/ext4/inode.c:834
 ext4_block_write_begin+0x567/0x1330 fs/ext4/inode.c:1101
 ext4_write_begin+0x651/0x15a0 fs/ext4/ext4_jbd2.h:-1
 ext4_da_write_begin+0x455/0xe80 fs/ext4/inode.c:3033
 generic_perform_write+0x2be/0x510 mm/filemap.c:3509
 ext4_buffered_write_iter+0x4b8/0x640 fs/ext4/file.c:271
 ext4_file_write_iter+0x536/0x1980 fs/ext4/file.c:-1
 __kernel_write+0x55a/0x910 fs/read_write.c:550
 dump_emit+0x240/0x360 fs/coredump.c:855
 dump_user_range+0x6a/0x1a0 fs/coredump.c:908
 elf_core_dump+0x278a/0x2bc0 fs/binfmt_elf.c:2290
 do_coredump+0x1ac9/0x27f0 fs/coredump.c:817
 get_signal+0xf23/0x12e0 kernel/signal.c:2779
 arch_do_signal_or_restart+0xbf/0x10f0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0xa2/0xe0 kernel/entry/common.c:169
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:199
 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:287
 irqentry_exit+0x12/0x60 kernel/entry/common.c:375
 exc_page_fault+0x67/0xc0 arch/x86/mm/fault.c:1487
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:571
RIP: 0033:0x0
Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
RSP: 002b:0000000020000473 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 0000000000000058 RCX: 00007f92375cc959
RDX: 00007f923714efb0 RSI: 0000000000000058 RDI: 00007f923714efb0
RBP: 00007f9237628c88 R08: 0000000000000000 R09: 0000000000000058
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f92376ebf80 R15: 00007ffe55fd9278
Modules linked in:
---[ end trace 0e5d6cec37634e5b ]---
RIP: 0010:ext4_mb_release_inode_pa+0x9d0/0x9e0 fs/ext4/mballoc.c:4332
Code: 80 c2 03 38 c2 0f 8c 4e fe ff ff 48 89 df 41 89 ce e8 44 5a cc ff 44 89 f1 e9 3b fe ff ff e8 b7 6a 92 ff 0f 0b e8 b0 6a 92 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41 57
RSP: 0018:ffffc900025bdb80 EFLAGS: 00010293
RAX: ffffffff81d13b60 RBX: 0000000000000016 RCX: ffff88810d180000
RDX: 0000000000000000 RSI: 0000000000000016 RDI: 0000000000000000
RBP: ffffc900025bdcd0 R08: 0000000000000004 R09: 0000000000000003
R10: fffff520004b7b8c R11: 1ffff920004b7b8c R12: dffffc0000000000
R13: 000000000003b3a0 R14: 0000000000003b3a R15: ffff8881229027e0
FS:  00007f923714f6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000001ffffec0 CR3: 0000000111beb000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400