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EXT4-fs error (device loop0): ext4_discard_preallocations:4463: comm syz-executor228: Error -117 reading block bitmap for 0
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kernel BUG at fs/ext4/ext4.h:3247!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 301 Comm: syz-executor228 Not tainted 5.10.177-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3247 [inline]
RIP: 0010:ext4_mb_load_buddy_gfp+0xf5d/0x1020 fs/ext4/mballoc.c:1174
Code: ff e8 47 3c c8 ff e9 f0 f2 ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 52 f3 ff ff e8 4d 3c c8 ff e9 48 f3 ff ff e8 83 2e 8b ff <0f> 0b e9 62 00 00 00 e8 77 2e 8b ff e9 ef fb ff ff e9 65 00 00 00
RSP: 0018:ffffc90000c36590 EFLAGS: 00010293
RAX: ffffffff81df3e6d RBX: 00000000fffff01a RCX: ffff88810b2ecf00
RDX: 0000000000000000 RSI: 00000000fffff01a RDI: 0000000000000001
RBP: ffffc90000c36610 R08: ffffffff81df2ffc R09: fffff94000852c07
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: ffff88810ac67000 R14: 1ffff1102158c079 R15: ffff88810ac603c8
FS:  00005555571db300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562ed30d0278 CR3: 000000010ac35000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_discard_preallocations+0x79c/0xef0 fs/ext4/mballoc.c:4451
 ext4_truncate+0xa95/0x1220 fs/ext4/inode.c:4362
 ext4_truncate_failed_write fs/ext4/truncate.h:20 [inline]
 ext4_write_begin+0xce0/0x1730 fs/ext4/inode.c:1262
 ext4_da_write_begin+0x49d/0xf60 fs/ext4/inode.c:3031
 generic_perform_write+0x2cd/0x570 mm/filemap.c:3501
 ext4_buffered_write_iter+0x47d/0x610 fs/ext4/file.c:272
 ext4_file_write_iter+0x193/0x1ca0 fs/ext4/file.c:689
 __kernel_write+0x5ab/0x9d0 fs/read_write.c:550
 dump_emit+0x261/0x3a0 fs/coredump.c:849
 dump_user_range+0x71/0x1a0 fs/coredump.c:902
 elf_core_dump+0x33bd/0x3c10 fs/binfmt_elf.c:2287
 do_coredump+0x1eb8/0x2d60 fs/coredump.c:811
 get_signal+0x102c/0x1410 kernel/signal.c:2768
 arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 irqentry_exit_to_user_mode+0x55/0x80 kernel/entry/common.c:287
 irqentry_exit+0x12/0x60 kernel/entry/common.c:375
 exc_page_fault+0x33d/0x5b0 arch/x86/mm/fault.c:1521
 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: 00007fa2915b84e8 RCX: 00007fa291540609
RDX: 00007fa2914fdaa3 RSI: 0000000000000058 RDI: 00007fffcf40ee00
RBP: 0000000000000000 R08: 0000000000000755 R09: 00007fffcf40edb0
R10: 00007fffcf40ec50 R11: 0000000000000206 R12: 00007fffcf40eda8
R13: 00007fffcf40ee00 R14: 00007fffcf40edc0 R15: 0000000000000000
Modules linked in:
---[ end trace a3baf27b5dc9ec7e ]---
RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3247 [inline]
RIP: 0010:ext4_mb_load_buddy_gfp+0xf5d/0x1020 fs/ext4/mballoc.c:1174
Code: ff e8 47 3c c8 ff e9 f0 f2 ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 52 f3 ff ff e8 4d 3c c8 ff e9 48 f3 ff ff e8 83 2e 8b ff <0f> 0b e9 62 00 00 00 e8 77 2e 8b ff e9 ef fb ff ff e9 65 00 00 00
RSP: 0018:ffffc90000c36590 EFLAGS: 00010293
RAX: ffffffff81df3e6d RBX: 00000000fffff01a RCX: ffff88810b2ecf00
RDX: 0000000000000000 RSI: 00000000fffff01a RDI: 0000000000000001
RBP: ffffc90000c36610 R08: ffffffff81df2ffc R09: fffff94000852c07
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: ffff88810ac67000 R14: 1ffff1102158c079 R15: ffff88810ac603c8
FS:  00005555571db300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555571e4628 CR3: 000000010ac35000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400