WARNING in bpf_base_func

Title	Replies (including bot)	Last reply
WARNING in bpf_base_func_proto (2)	0 (1)	2019/12/30 12:57

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in bpf_base_func_proto trace				1	1786d	1785d	0/26	closed as invalid on 2019/08/26 08:19

------------[ cut here ]------------
Could not allocate percpu trace_printk buffer
WARNING: CPU: 1 PID: 15971 at kernel/trace/trace.c:3112 alloc_percpu_trace_buffer kernel/trace/trace.c:3112 [inline]
WARNING: CPU: 1 PID: 15971 at kernel/trace/trace.c:3112 trace_printk_init_buffers+0x5b/0x60 kernel/trace/trace.c:3126
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 15971 Comm: syz-executor.4 Not tainted 5.5.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x3e kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:176 [inline]
 fixup_bug arch/x86/kernel/traps.c:171 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:269
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:288
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:alloc_percpu_trace_buffer kernel/trace/trace.c:3112 [inline]
RIP: 0010:trace_printk_init_buffers+0x5b/0x60 kernel/trace/trace.c:3126
Code: ff be 04 00 00 00 bf 04 10 00 00 e8 ef 50 25 00 48 85 c0 0f 85 e8 37 00 00 e8 51 58 fb ff 48 c7 c7 40 77 2f 88 e8 74 b0 cb ff <0f> 0b eb c2 90 55 48 89 e5 41 57 49 c7 c7 40 5e 2f 88 41 56 49 89
RSP: 0018:ffffc90000d8f518 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 00000000000072ac RSI: ffffffff815e8ea6 RDI: fffff520001b1e95
RBP: ffffc90000d8f528 R08: ffff88805ad7e040 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8831aaa0
R13: 0000000000000006 R14: 0000000000000006 R15: ffff88805690c000
 bpf_get_trace_printk_proto+0xe/0x20 kernel/trace/bpf_trace.c:457
 bpf_base_func_proto net/core/filter.c:5925 [inline]
 bpf_base_func_proto+0x1b3/0x1c0 net/core/filter.c:5887
 sk_msg_func_proto+0x3b/0xc0 net/core/filter.c:6248
 check_helper_call+0x123/0x4920 kernel/bpf/verifier.c:4236
 do_check kernel/bpf/verifier.c:8026 [inline]
 do_check_common+0x6811/0x9730 kernel/bpf/verifier.c:9631
 do_check_main kernel/bpf/verifier.c:9695 [inline]
 bpf_check+0x76f0/0xa36e kernel/bpf/verifier.c:10095
 bpf_prog_load+0xea4/0x1820 kernel/bpf/syscall.c:2101
 __do_sys_bpf+0x1521/0x41e0 kernel/bpf/syscall.c:3396
 __se_sys_bpf kernel/bpf/syscall.c:3355 [inline]
 __x64_sys_bpf+0x73/0xb0 kernel/bpf/syscall.c:3355
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45b349
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f184627bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f184627c6d4 RCX: 000000000045b349
RDX: 0000000000000048 RSI: 0000000020000080 RDI: 0000000000000005
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000064 R14: 00000000004c1b5a R15: 000000000075bf2c
Kernel Offset: disabled
Rebooting in 86400 seconds..

Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2020/01/29 18:48	bpf-next	b3a608222336	5ed23f9a	.config	console log	report					ci-upstream-bpf-next-kasan-gce
2019/12/29 20:26	bpf-next	2bbc078f812d	af6b8ef8	.config	console log	report					ci-upstream-bpf-next-kasan-gce