WARNING in __getblk

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	WARNING in __getblk_gfp	-1				9	2d05h	11d	0/3	upstream: reported on 2026/07/26 15:32
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WARNING: CPU: 0 PID: 5100 at mm/page_alloc.c:3392 __alloc_pages_may_oom mm/page_alloc.c:3392 [inline]
WARNING: CPU: 0 PID: 5100 at mm/page_alloc.c:3392 __alloc_pages_slowpath+0x1bbb/0x22b0 mm/page_alloc.c:4176
Modules linked in:
CPU: 0 PID: 5100 Comm: jbd2/sda1-8 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__alloc_pages_may_oom mm/page_alloc.c:3392 [inline]
RIP: 0010:__alloc_pages_slowpath+0x1bbb/0x22b0 mm/page_alloc.c:4176
Code: 07 80 c1 03 38 c1 0f 8c e7 ee ff ff 4c 89 f7 e8 8b c7 0b 00 49 b8 00 00 00 00 00 fc ff df e9 d0 ee ff ff c6 05 c1 d2 a2 0c 01 <0f> 0b 66 83 3c 24 00 0f 89 b6 fb ff ff 44 89 74 24 10 44 89 64 24
RSP: 0018:ffffc9000fe773a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888031fd9e00 RCX: fd2ef9bf9baec400
RDX: 0000000000000000 RSI: 0000000000000200 RDI: ffffc9000fe77500
RBP: ffffc9000fe775d0 R08: ffff88823fff8497 R09: 1ffff11047fff092
R10: dffffc0000000000 R11: ffffed1047fff093 R12: 0000000000000000
R13: 0000000000000002 R14: 0000000000000015 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ab9ea16646 CR3: 000000002e6ae000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 __alloc_pages+0x32c/0x460 mm/page_alloc.c:4514
 folio_alloc+0x1e/0x30 mm/mempolicy.c:2289
 filemap_alloc_folio+0xdf/0x490 mm/filemap.c:1004
 __filemap_get_folio+0x3fb/0xbe0 mm/filemap.c:1962
 grow_dev_page fs/buffer.c:1058 [inline]
 grow_buffers fs/buffer.c:1118 [inline]
 __getblk_slow fs/buffer.c:1145 [inline]
 __getblk_gfp+0x212/0x620 fs/buffer.c:1439
 __getblk include/linux/buffer_head.h:399 [inline]
 jbd2_journal_get_descriptor_buffer+0xd1/0x380 fs/jbd2/journal.c:1011
 jbd2_journal_commit_transaction+0x1364/0x5ad0 fs/jbd2/commit.c:611
 kjournald2+0x40f/0x810 fs/jbd2/journal.c:201
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>