[syzbot] [bpf?] WARNING in bpf_check (5)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 8f5ae30d69d7 Linux 6.17-rc1
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=10dc087c580000
kernel config: https://syzkaller.appspot.com/x/.config?x=8c5ac3d8b8abfcb
dashboard link: https://syzkaller.appspot.com/bug?extid=27689b73d9cffb8c6bca
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
userspace arch: arm64
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16342134580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10e75a42580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/18a2e4bd0c4a/disk-8f5ae30d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3b5395881b25/vmlinux-8f5ae30d.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e875f4e3b7ff/Image-8f5ae30d.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+27689b...@syzkaller.appspotmail.com

------------[ cut here ]------------
verifier bug: not inlined functions bpf_perf_event_read#22 is missing func(1)
WARNING: CPU: 1 PID: 6725 at kernel/bpf/verifier.c:22840 do_misc_fixups kernel/bpf/verifier.c:22838 [inline]
WARNING: CPU: 1 PID: 6725 at kernel/bpf/verifier.c:22840 bpf_check+0x1559c/0x15d8c kernel/bpf/verifier.c:24742
Modules linked in:
CPU: 1 UID: 0 PID: 6725 Comm: syz.0.17 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : do_misc_fixups kernel/bpf/verifier.c:22838 [inline]
pc : bpf_check+0x1559c/0x15d8c kernel/bpf/verifier.c:24742
lr : do_misc_fixups kernel/bpf/verifier.c:22838 [inline]
lr : bpf_check+0x1559c/0x15d8c kernel/bpf/verifier.c:24742
sp : ffff8000a7e87480
x29: ffff8000a7e87980 x28: dfff800000000000 x27: 0000000000000006
x26: 1ffff00012f83c13 x25: ffff800097c1e09c x24: ffff0000c8050008
x23: ffff800097c1e098 x22: ffff80008b142d60 x21: ffff800092df4000
x20: ffff800097c1e09c x19: 1ffff00012f83c13 x18: 1fffe000337a0688
x17: ffff80008f7be000 x16: ffff80008b007230 x15: 0000000000000001
x14: 1fffe000337a3108 x13: 0000000000000000 x12: 0000000000000000
x11: ffff6000337a3109 x10: 0000000000000003 x9 : 962cacbf6519a100
x8 : 962cacbf6519a100 x7 : ffff800080491074 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010
x2 : ffff8000a7e87040 x1 : ffff80008b6577c0 x0 : 0000000000000001
Call trace:
do_misc_fixups kernel/bpf/verifier.c:22838 [inline] (P)
bpf_check+0x1559c/0x15d8c kernel/bpf/verifier.c:24742 (P)
bpf_prog_load+0xec8/0x13fc kernel/bpf/syscall.c:2979
__sys_bpf+0x450/0x628 kernel/bpf/syscall.c:6029
__do_sys_bpf kernel/bpf/syscall.c:6139 [inline]
__se_sys_bpf kernel/bpf/syscall.c:6137 [inline]
__arm64_sys_bpf+0x80/0x98 kernel/bpf/syscall.c:6137
__invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
irq event stamp: 1566
hardirqs last enabled at (1565): [<ffff800080491108>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1531 [inline]
hardirqs last enabled at (1565): [<ffff800080491108>] finish_lock_switch+0xb0/0x1c0 kernel/sched/core.c:5105
hardirqs last disabled at (1566): [<ffff80008b001bfc>] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574
softirqs last enabled at (1274): [<ffff80008080b8c4>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last enabled at (1274): [<ffff80008080b8c4>] bpf_map_alloc_id+0x98/0x1a8 kernel/bpf/syscall.c:451
softirqs last disabled at (1270): [<ffff80008080b864>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (1270): [<ffff80008080b864>] bpf_map_alloc_id+0x38/0x1a8 kernel/bpf/syscall.c:447
---[ end trace 0000000000000000 ]---


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