Yonghong Song 001fedacc9 selftests/bpf: Add a local kptr test with no special fields ... Add a local kptr test with no special fields in the struct. Without the previous patch, the following warning will hit: [ 44.683877] WARNING: CPU: 3 PID: 485 at kernel/bpf/syscall.c:660 bpf_obj_free_fields+0x220/0x240 [ 44.684640] Modules linked in: bpf_testmod(OE) [ 44.685044] CPU: 3 PID: 485 Comm: kworker/u8:5 Tainted: G OE 6.5.0-rc5-01703-g260d855e9b90 #248 [ 44.685827] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [ 44.686693] Workqueue: events_unbound bpf_map_free_deferred [ 44.687297] RIP: 0010:bpf_obj_free_fields+0x220/0x240 [ 44.687775] Code: e8 55 17 1f 00 49 8b 74 24 08 4c 89 ef e8 e8 14 05 00 e8 a3 da e2 ff e9 55 fe ff ff 0f 0b e9 4e fe ff ff 0f 0b e9 47 fe ff ff <0f> 0b e8 d9 d9 e2 ff 31 f6 eb d5 48 83 c4 10 5b 41 5c e [ 44.689353] RSP: 0018:ffff888106467cb8 EFLAGS: 00010246 [ 44.689806] RAX: 0000000000000000 RBX: ffff888112b3a200 RCX: 0000000000000001 [ 44.690433] RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffff8881128ad988 [ 44.691094] RBP: 0000000000000002 R08: ffffffff81370bd0 R09: 1ffff110216231a5 [ 44.691643] R10: dffffc0000000000 R11: ffffed10216231a6 R12: ffff88810d68a488 [ 44.692245] R13: ffff88810767c288 R14: ffff88810d68a400 R15: ffff88810d68a418 [ 44.692829] FS: 0000000000000000(0000) GS:ffff8881f7580000(0000) knlGS:0000000000000000 [ 44.693484] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.693964] CR2: 000055c7f2afce28 CR3: 000000010fee4002 CR4: 0000000000370ee0 [ 44.694513] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.695102] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.695747] Call Trace: [ 44.696001] <TASK> [ 44.696183] ? __warn+0xfe/0x270 [ 44.696447] ? bpf_obj_free_fields+0x220/0x240 [ 44.696817] ? report_bug+0x220/0x2d0 [ 44.697180] ? handle_bug+0x3d/0x70 [ 44.697507] ? exc_invalid_op+0x1a/0x50 [ 44.697887] ? asm_exc_invalid_op+0x1a/0x20 [ 44.698282] ? btf_find_struct_meta+0xd0/0xd0 [ 44.698634] ? bpf_obj_free_fields+0x220/0x240 [ 44.699027] ? bpf_obj_free_fields+0x1e2/0x240 [ 44.699414] array_map_free+0x1a3/0x260 [ 44.699763] bpf_map_free_deferred+0x7b/0xe0 [ 44.700154] process_one_work+0x46d/0x750 [ 44.700523] worker_thread+0x49e/0x900 [ 44.700892] ? pr_cont_work+0x270/0x270 [ 44.701224] kthread+0x1ae/0x1d0 [ 44.701516] ? kthread_blkcg+0x50/0x50 [ 44.701860] ret_from_fork+0x34/0x50 [ 44.702178] ? kthread_blkcg+0x50/0x50 [ 44.702508] ret_from_fork_asm+0x11/0x20 [ 44.702880] </TASK> With the previous patch, there is no warnings. Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20230824063422.203097-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2023-08-24 08:15:16 -07:00
..
accounting
arch	perf tools fixes for v6.5: 3rd batch	2023-08-09 21:06:14 -07:00
bootconfig
bpf	bpftool: Implement link show support for xdp	2023-08-16 10:14:17 -07:00
build	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-07-20 15:52:55 -07:00
certs
cgroup
counter
debugging
edid
firewire
firmware
gpio
hv	vmbus_testing: fix wrong python syntax for integer value comparison	2023-07-23 23:19:30 +00:00
iio
include	bpf: Add pid filter support for uprobe_multi link	2023-08-21 15:51:25 -07:00
io_uring
kvm/kvm_stat
laptop
leds
lib	libbpf: fix signedness determination in CO-RE relo handling logic	2023-08-23 21:13:48 -07:00
memory-model
mm
net/ynl	tools: ynl: add more info to KeyErrors on missing attrs	2023-08-15 19:18:34 -07:00
objtool	x86/srso: Add a Speculative RAS Overflow mitigation	2023-07-27 11:07:14 +02:00
pci
pcmcia
perf	perf stat: Don't display zero tool counts	2023-08-08 14:33:57 -03:00
power	platform-drivers-x86 for v6.5-1	2023-06-30 14:50:00 -07:00
rcu
scripts
spi
testing	selftests/bpf: Add a local kptr test with no special fields	2023-08-24 08:15:16 -07:00
thermal
time
tracing	rtla/timerlat_hist: Add timerlat user-space support	2023-06-13 16:41:14 -04:00
usb
verification
virtio	tools/virtio: fix build break for aarch64	2023-06-27 10:47:08 -04:00
wmi
workqueue
Makefile