WARNING in page_counter

Title	Replies (including bot)	Last reply
[PATCH] mmap: Fix hugetlb accounting error in __split_vma()	1 (1)	2022/07/19 20:15
[syzbot] WARNING in page_counter_cancel (4)	1 (2)	2022/07/19 20:10

Title

Replies (including bot)

Last reply

[PATCH] mmap: Fix hugetlb accounting error in __split_vma()

1 (1)

2022/07/19 20:15

[syzbot] WARNING in page_counter_cancel (4)

1 (2)

2022/07/19 20:10

Kernel	Title	Repro	Cause bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in page_counter_cancel (2) mm			13	1484d	1489d	0/28	auto-closed as invalid on 2021/04/05 00:39
upstream	WARNING in page_counter_cancel mm			1	2399d	2399d	0/28	closed as invalid on 2018/07/05 16:25
upstream	WARNING in page_counter_cancel (3) mm	C	done	22	1114d	1164d	20/28	fixed on 2022/03/08 16:11
upstream	WARNING in page_counter_cancel (5) mm	C		5	15d	116d	0/28	upstream: reported C repro on 2024/10/04 15:31

Created	Duration	User	Patch	Repo	Result
2022/11/26 07:30	21m	retest repro		linux-next	OK log

Created

Duration

User

Patch

Repo

Result

2022/11/26 07:30

21m

retest repro

linux-next

OK log

------------[ cut here ]------------ page_counter underflow: -512 nr_pages=1536 WARNING: CPU: 0 PID: 3608 at mm/page_counter.c:56 page_counter_cancel+0xcf/0xe0 mm/page_counter.c:56 Modules linked in: CPU: 0 PID: 3608 Comm: syz-executor428 Not tainted 5.19.0-rc4-next-20220628-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 RIP: 0010:page_counter_cancel+0xcf/0xe0 mm/page_counter.c:56 Code: c7 04 24 00 00 00 00 45 31 f6 eb 97 e8 2a 36 ae ff 4c 89 ea 48 89 ee 48 c7 c7 a0 55 da 89 c6 05 26 90 db 0b 01 e8 bb bb 67 07 <0f> 0b eb a8 4c 89 e7 e8 65 3b fa ff eb c7 0f 1f 00 41 56 41 55 49 RSP: 0018:ffffc9000302fb28 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff888140159268 RCX: 0000000000000000 RDX: ffff88801ea81d40 RSI: ffffffff81610608 RDI: fffff52000605f57 RBP: fffffffffffffe00 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffff888140159268 R13: 0000000000000600 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb2ef03c290 CR3: 000000002234d000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> page_counter_uncharge+0x2e/0x60 mm/page_counter.c:159 hugetlb_cgroup_uncharge_counter+0xcc/0x3d0 mm/hugetlb_cgroup.c:432 hugetlb_vm_op_close+0x424/0x6b0 mm/hugetlb.c:4598 remove_vma+0x81/0x130 mm/mmap.c:187 exit_mmap+0x288/0x720 mm/mmap.c:3222 __mmput+0x128/0x4c0 kernel/fork.c:1180 mmput+0x5c/0x70 kernel/fork.c:1201 exit_mm kernel/exit.c:510 [inline] do_exit+0xa09/0x29f0 kernel/exit.c:782 do_group_exit+0xd2/0x2f0 kernel/exit.c:925 __do_sys_exit_group kernel/exit.c:936 [inline] __se_sys_exit_group kernel/exit.c:934 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:934 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7fb2eefc6d39 Code: Unable to access opcode bytes at RIP 0x7fb2eefc6d0f. RSP: 002b:00007ffc35614978 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007fb2ef03b3f0 RCX: 00007fb2eefc6d39 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000003 R10: 0000000020000000 R11: 0000000000000246 R12: 00007fb2ef03b3f0 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 </TASK>

Crashes (4):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Manager	Title
2022/07/17 15:33	linux-next	cb71b93c2dc3	95cb00d1	.config	strace log	report	syz	C		ci-upstream-linux-next-kasan-gce-root	WARNING in page_counter_cancel
2022/08/03 00:40	linux-next	cb71b93c2dc3	1c9013ac	.config	console log	report			info	ci-upstream-linux-next-kasan-gce-root	WARNING in page_counter_cancel
2022/07/18 21:01	linux-next	cb71b93c2dc3	ff988920	.config	console log	report			info	ci-upstream-linux-next-kasan-gce-root	WARNING in page_counter_cancel
2022/07/17 15:19	linux-next	cb71b93c2dc3	95cb00d1	.config	console log	report			info	ci-upstream-linux-next-kasan-gce-root	WARNING in page_counter_cancel

Crashes (4):

Assets (help?)