WARNING in __page_cache

ID	Workflow	Result	Correct	Bug	Created	Started	Finished	Revision	Error
6aab5410-7cd6-4440-9942-d810d3c6c11e	assessment-security	DenialOfService: ❌ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌	❓	WARNING in __page_cache_release	2026/05/30 17:14	2026/05/30 17:14	2026/05/30 18:37	6b4a844333e83556da95d61d7f207e7ef5cd4bc6
15664fcc-9e07-4bbd-beec-b7e1eb6a63eb	assessment-security		💥	WARNING in __page_cache_release	2026/05/14 11:14	2026/05/14 11:14	2026/05/14 11:16	6ccb967e465e832a7bfd7a116ad00d52a0923a5d	failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/138ebfc48a519a8e87... truncated to first 200 bytes; open job for full error

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[syzbot] [mm?] WARNING in __page_cache_release	0 (1)	2026/04/30 06:59

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[syzbot] [mm?] WARNING in __page_cache_release

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2026/04/30 06:59

------------[ cut here ]------------ debug_locks && !(rcu_read_lock_held() || lock_is_held(&(&cgroup_mutex)->dep_map)) WARNING: ./include/linux/memcontrol.h:380 at obj_cgroup_memcg include/linux/memcontrol.h:380 [inline], CPU#1: dhcpcd-run-hook/5685 WARNING: ./include/linux/memcontrol.h:380 at folio_memcg include/linux/memcontrol.h:434 [inline], CPU#1: dhcpcd-run-hook/5685 WARNING: ./include/linux/memcontrol.h:380 at folio_matches_lruvec include/linux/memcontrol.h:1501 [inline], CPU#1: dhcpcd-run-hook/5685 WARNING: ./include/linux/memcontrol.h:380 at folio_lruvec_relock_irqsave include/linux/memcontrol.h:1523 [inline], CPU#1: dhcpcd-run-hook/5685 WARNING: ./include/linux/memcontrol.h:380 at __page_cache_release.part.0+0x1149/0x1440 mm/swap.c:77, CPU#1: dhcpcd-run-hook/5685 Modules linked in: CPU: 1 UID: 0 PID: 5685 Comm: dhcpcd-run-hook Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:obj_cgroup_memcg include/linux/memcontrol.h:380 [inline] RIP: 0010:folio_memcg include/linux/memcontrol.h:434 [inline] RIP: 0010:folio_matches_lruvec include/linux/memcontrol.h:1501 [inline] RIP: 0010:folio_lruvec_relock_irqsave include/linux/memcontrol.h:1523 [inline] RIP: 0010:__page_cache_release.part.0+0x1149/0x1440 mm/swap.c:77 Code: 00 0f 85 b2 02 00 00 89 c6 31 ff 89 44 24 08 49 8b 2c 24 e8 29 a8 c0 ff 8b 44 24 08 85 c0 0f 85 34 fa ff ff e8 68 ad c0 ff 90 <0f> 0b 90 e9 26 fa ff ff e8 5a ad c0 ff 48 c7 c6 c0 a0 bd 8b 48 89 RSP: 0018:ffffc900045af6f8 EFLAGS: 00010093 RAX: 0000000000000000 RBX: ffffea00014fe100 RCX: ffffffff82472de7 RDX: ffff888027be4a00 RSI: ffffffff82472df8 RDI: ffff888027be4a00 RBP: ffff8880404a0048 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffc900045af7a8 R13: ffffc900045af7c8 R14: ffff88801b8ffe00 R15: 00000000000000ff FS: 0000000000000000(0000) GS:ffff888097280000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1d72d36368 CR3: 0000000052fd2000 CR4: 0000000000352ef0 Call Trace: <TASK> __page_cache_release mm/swap.c:1009 [inline] folios_put_refs+0x780/0xa90 mm/swap.c:993 free_pages_and_swap_cache+0x22d/0x3b0 mm/swap_state.c:401 __tlb_batch_free_encoded_pages+0xe9/0x280 mm/mmu_gather.c:138 tlb_batch_pages_flush mm/mmu_gather.c:151 [inline] tlb_flush_mmu_free mm/mmu_gather.c:417 [inline] tlb_flush_mmu mm/mmu_gather.c:424 [inline] tlb_finish_mmu+0x1b0/0x810 mm/mmu_gather.c:549 exit_mmap+0x454/0xa10 mm/mmap.c:1313 __mmput+0x12a/0x410 kernel/fork.c:1178 mmput+0x67/0x80 kernel/fork.c:1201 exit_mm kernel/exit.c:581 [inline] do_exit+0x833/0x2a60 kernel/exit.c:963 do_group_exit+0xd5/0x2a0 kernel/exit.c:1117 __do_sys_exit_group kernel/exit.c:1128 [inline] __se_sys_exit_group kernel/exit.c:1126 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1126 x64_sys_call+0x102c/0x1530 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1d72b666c5 Code: Unable to access opcode bytes at 0x7f1d72b6669b. RSP: 002b:00007ffd91878108 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007ffd91878404 RCX: 00007f1d72b666c5 RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000 RBP: 0000000000000003 R08: 00007ffd91878200 R09: 0000000000000002 R10: 00007f1d72c0cfe0 R11: 0000000000000202 R12: 0000000000000000 R13: 00007ffd91878440 R14: 00007f1d72d76000 R15: 000056441d2c7d98 </TASK>

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2026/04/26 06:42	upstream	897d54018cc9	9c2d0995	.config	console log	report			info	[disk image (non-bootable)] [vmlinux] [kernel image]	ci-qemu-upstream-386	WARNING in __page_cache_release

Crashes (1):

Assets (help?)