syzbot

gfs2: fsid=syz:syz.0: Failed to zero data buffers
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WARNING: CPU: 0 PID: 5312 at fs/iomap/buffered-io.c:1365 iomap_zero_iter+0x645/0x7f0 fs/iomap/buffered-io.c:1365
Modules linked in:
CPU: 0 UID: 0 PID: 5312 Comm: syz.0.0 Not tainted 6.15.0-rc5-syzkaller-00022-g01f95500a162 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:iomap_zero_iter+0x645/0x7f0 fs/iomap/buffered-io.c:1365
Code: 6e 6d ff 85 db 0f 85 b0 00 00 00 48 83 bc 24 a0 00 00 00 00 0f 84 b5 00 00 00 e8 e6 69 6d ff e9 a7 fb ff ff e8 dc 69 6d ff 90 <0f> 0b 90 e9 8c fc ff ff 48 8b 4c 24 28 80 e1 07 fe c1 38 c1 0f 8c
RSP: 0018:ffffc9000fdcf880 EFLAGS: 00010283
RAX: ffffffff82526674 RBX: ffffea0000493700 RCX: 0000000000100000
RDX: ffffc9000e513000 RSI: 00000000000003ad RDI: 00000000000003ae
RBP: ffffc9000fdcf990 R08: ffffffff8f7ed977 R09: 1ffffffff1efdb2e
R10: dffffc0000000000 R11: fffffbfff1efdb2f R12: dffffc0000000000
R13: ffffc9000fdcfa20 R14: 0000000000010000 R15: 0000000000000000
FS:  00007f686ca906c0(0000) GS:ffff88808d6cb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000440 CR3: 000000003588c000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 iomap_zero_range+0x524/0x680 fs/iomap/buffered-io.c:1451
 gfs2_block_zero_range fs/gfs2/bmap.c:1303 [inline]
 __gfs2_punch_hole+0x302/0xa40 fs/gfs2/bmap.c:2421
 gfs2_fallocate+0x38d/0x470 fs/gfs2/file.c:1400
 vfs_fallocate+0x6a0/0x830 fs/open.c:338
 ksys_fallocate fs/open.c:362 [inline]
 __do_sys_fallocate fs/open.c:367 [inline]
 __se_sys_fallocate fs/open.c:365 [inline]
 __x64_sys_fallocate+0xc0/0x110 fs/open.c:365
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f686bb8e969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f686ca90038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f686bdb6080 RCX: 00007f686bb8e969
RDX: 0000000000000005 RSI: 0000000000000003 RDI: 000000000000000c
RBP: 00007f686bc10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f686bdb6080 R15: 00007fff1d70c6f8
 </TASK>