=====================================================
BUG: KMSAN: uninit-value in netif_receive_generic_xdp+0x15c2/0x2590 net/core/dev.c:4751
CPU: 0 PID: 32236 Comm: syz-executor.1 Not tainted 5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x24c/0x2e0 lib/dump_stack.c:120
kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
__msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
netif_receive_generic_xdp+0x15c2/0x2590 net/core/dev.c:4751
do_xdp_generic net/core/dev.c:4816 [inline]
__netif_receive_skb_core+0x294a/0x65a0 net/core/dev.c:5207
__netif_receive_skb_one_core net/core/dev.c:5382 [inline]
__netif_receive_skb+0xf2/0x640 net/core/dev.c:5498
process_backlog+0x517/0xbd0 net/core/dev.c:6365
__napi_poll+0x13e/0xca0 net/core/dev.c:6912
napi_poll net/core/dev.c:6979 [inline]
net_rx_action+0x726/0x14a0 net/core/dev.c:7065
__do_softirq+0x1b9/0x715 kernel/softirq.c:345
invoke_softirq kernel/softirq.c:221 [inline]
__irq_exit_rcu+0x22f/0x280 kernel/softirq.c:422
irq_exit_rcu+0xe/0x10 kernel/softirq.c:434
sysvec_apic_timer_interrupt+0xc6/0xf0 arch/x86/kernel/apic/apic.c:1100
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:650
RIP: 0010:__msan_memset+0x8b/0xb0 mm/kmsan/kmsan_instr.c:134
Code: f0 ff ff e8 d7 eb ff ff 8b b0 b0 0f 00 00 ff ce 89 b0 b0 0f 00 00 75 21 e8 32 e5 0b ff 41 f7 c4 00 02 00 00 74 01 fb 4c 89 f0 <48> 83 c4 08 5b 41 5c 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 39 15 7c 90
RSP: 0018:ffff88815ae231f0 EFLAGS: 00000206
RAX: ffff8881150b7e00 RBX: ffff8881150b7e00 RCX: 000000000000003b
RDX: 000000000000003a RSI: 0000000000000000 RDI: ffff8881150b7e00
RBP: ffff88815ae23218 R08: ffffea000000000f R09: ffff88813fffa000
R10: 0000000065fd453c R11: 0000000000000000 R12: 0000000000000246
R13: 0000000000000000 R14: ffff8881150b7e00 R15: 00000000000000e8
slab_alloc_node mm/slub.c:2919 [inline]
slab_alloc mm/slub.c:2931 [inline]
kmem_cache_alloc+0x846/0x1030 mm/slub.c:2936
skb_clone+0x374/0x650 net/core/skbuff.c:1496
____bpf_clone_redirect net/core/filter.c:2433 [inline]
bpf_clone_redirect+0x188/0x660 net/core/filter.c:2420
___bpf_prog_run+0x2b78/0xb950 kernel/bpf/core.c:1525
__bpf_prog_run512+0x12e/0x190 kernel/bpf/core.c:1750
bpf_test_run+0x53f/0xe60 include/linux/filter.h:770
bpf_prog_test_run_skb+0x1914/0x3500 net/bpf/test_run.c:582
bpf_prog_test_run kernel/bpf/syscall.c:3132 [inline]
__do_sys_bpf+0xbe6f/0x1aba0 kernel/bpf/syscall.c:4411
__se_sys_bpf+0x8e/0xa0 kernel/bpf/syscall.c:4351
__ia32_sys_bpf+0x4a/0x70 kernel/bpf/syscall.c:4351
do_syscall_32_irqs_on arch/x86/entry/common.c:79 [inline]
__do_fast_syscall_32+0x127/0x180 arch/x86/entry/common.c:142
do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167
do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f0e549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f55085fc EFLAGS: 00000296 ORIG_RAX: 0000000000000165
RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000020000080
RDX: 0000000000000028 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104
kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76
slab_alloc_node mm/slub.c:2922 [inline]
__kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609
kmalloc_reserve net/core/skbuff.c:353 [inline]
pskb_expand_head+0x25e/0x1e20 net/core/skbuff.c:1676
netif_receive_generic_xdp+0x61c/0x2590 net/core/dev.c:4699
do_xdp_generic net/core/dev.c:4816 [inline]
__netif_receive_skb_core+0x294a/0x65a0 net/core/dev.c:5207
__netif_receive_skb_one_core net/core/dev.c:5382 [inline]
__netif_receive_skb+0xf2/0x640 net/core/dev.c:5498
process_backlog+0x517/0xbd0 net/core/dev.c:6365
__napi_poll+0x13e/0xca0 net/core/dev.c:6912
napi_poll net/core/dev.c:6979 [inline]
net_rx_action+0x726/0x14a0 net/core/dev.c:7065
__do_softirq+0x1b9/0x715 kernel/softirq.c:345
=====================================================
------------[ cut here ]------------
Illegal XDP return value 4294967274, expect packet loss!
WARNING: CPU: 0 PID: 32236 at net/core/filter.c:8111 bpf_warn_invalid_xdp_action+0x147/0x150 net/core/filter.c:8109
Modules linked in:
CPU: 0 PID: 32236 Comm: syz-executor.1 Tainted: G B 5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:bpf_warn_invalid_xdp_action+0x147/0x150 net/core/filter.c:8109
Code: 45 89 bd 50 06 00 00 45 89 a5 70 09 00 00 49 c7 85 80 0c 00 00 00 00 00 00 48 c7 c7 a4 2a 9e 90 44 89 f2 31 c0 e8 79 2c f0 f4 <0f> 0b e9 fa fe ff ff 66 90 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffff88813fc05890 EFLAGS: 00010246
RAX: 31fd1e90c676f000 RBX: 00000000ffffff00 RCX: ffff888103058000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88813fc058b8 R08: ffffffff81a430aa R09: ffff88813fffa000
R10: 0000000000000003 R11: 00000000ffffffff R12: 00000000069700cc
R13: ffff88813fc27b00 R14: 00000000ffffffea R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff88813fc00000(0063) knlGS:00000000f5508b40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000008156cd0 CR3: 000000015d0e8000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
netif_receive_generic_xdp+0x1ed6/0x2590 net/core/dev.c:4768
do_xdp_generic net/core/dev.c:4816 [inline]
__netif_receive_skb_core+0x294a/0x65a0 net/core/dev.c:5207
__netif_receive_skb_one_core net/core/dev.c:5382 [inline]
__netif_receive_skb+0xf2/0x640 net/core/dev.c:5498
process_backlog+0x517/0xbd0 net/core/dev.c:6365
__napi_poll+0x13e/0xca0 net/core/dev.c:6912
napi_poll net/core/dev.c:6979 [inline]
net_rx_action+0x726/0x14a0 net/core/dev.c:7065
__do_softirq+0x1b9/0x715 kernel/softirq.c:345
invoke_softirq kernel/softirq.c:221 [inline]
__irq_exit_rcu+0x22f/0x280 kernel/softirq.c:422
irq_exit_rcu+0xe/0x10 kernel/softirq.c:434
sysvec_apic_timer_interrupt+0xc6/0xf0 arch/x86/kernel/apic/apic.c:1100
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:650
RIP: 0010:__msan_memset+0x8b/0xb0 mm/kmsan/kmsan_instr.c:134
Code: f0 ff ff e8 d7 eb ff ff 8b b0 b0 0f 00 00 ff ce 89 b0 b0 0f 00 00 75 21 e8 32 e5 0b ff 41 f7 c4 00 02 00 00 74 01 fb 4c 89 f0 <48> 83 c4 08 5b 41 5c 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 39 15 7c 90
RSP: 0018:ffff88815ae231f0 EFLAGS: 00000206
RAX: ffff8881150b7e00 RBX: ffff8881150b7e00 RCX: 000000000000003b
RDX: 000000000000003a RSI: 0000000000000000 RDI: ffff8881150b7e00
RBP: ffff88815ae23218 R08: ffffea000000000f R09: ffff88813fffa000
R10: 0000000065fd453c R11: 0000000000000000 R12: 0000000000000246
R13: 0000000000000000 R14: ffff8881150b7e00 R15: 00000000000000e8
slab_alloc_node mm/slub.c:2919 [inline]
slab_alloc mm/slub.c:2931 [inline]
kmem_cache_alloc+0x846/0x1030 mm/slub.c:2936
skb_clone+0x374/0x650 net/core/skbuff.c:1496
____bpf_clone_redirect net/core/filter.c:2433 [inline]
bpf_clone_redirect+0x188/0x660 net/core/filter.c:2420
___bpf_prog_run+0x2b78/0xb950 kernel/bpf/core.c:1525
__bpf_prog_run512+0x12e/0x190 kernel/bpf/core.c:1750
bpf_test_run+0x53f/0xe60 include/linux/filter.h:770
bpf_prog_test_run_skb+0x1914/0x3500 net/bpf/test_run.c:582
bpf_prog_test_run kernel/bpf/syscall.c:3132 [inline]
__do_sys_bpf+0xbe6f/0x1aba0 kernel/bpf/syscall.c:4411
__se_sys_bpf+0x8e/0xa0 kernel/bpf/syscall.c:4351
__ia32_sys_bpf+0x4a/0x70 kernel/bpf/syscall.c:4351
do_syscall_32_irqs_on arch/x86/entry/common.c:79 [inline]
__do_fast_syscall_32+0x127/0x180 arch/x86/entry/common.c:142
do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167
do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f0e549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f55085fc EFLAGS: 00000296 ORIG_RAX: 0000000000000165
RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000020000080
RDX: 0000000000000028 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
---[ end trace 76368696b1a746bb ]---
=====================================================
BUG: KMSAN: uninit-value in netif_receive_generic_xdp+0x15c2/0x2590 net/core/dev.c:4751
CPU: 0 PID: 11 Comm: ksoftirqd/0 Tainted: G B W 5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x24c/0x2e0 lib/dump_stack.c:120
kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
__msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
netif_receive_generic_xdp+0x15c2/0x2590 net/core/dev.c:4751
do_xdp_generic net/core/dev.c:4816 [inline]
__netif_receive_skb_core+0x294a/0x65a0 net/core/dev.c:5207
__netif_receive_skb_one_core net/core/dev.c:5382 [inline]
__netif_receive_skb+0xf2/0x640 net/core/dev.c:5498
process_backlog+0x517/0xbd0 net/core/dev.c:6365
__napi_poll+0x13e/0xca0 net/core/dev.c:6912
napi_poll net/core/dev.c:6979 [inline]
net_rx_action+0x726/0x14a0 net/core/dev.c:7065
__do_softirq+0x1b9/0x715 kernel/softirq.c:345
run_ksoftirqd+0x20/0x40 kernel/softirq.c:652
smpboot_thread_fn+0x5f5/0xa90 kernel/smpboot.c:165
kthread+0x521/0x560 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104
kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76
slab_alloc_node mm/slub.c:2922 [inline]
__kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609
kmalloc_reserve net/core/skbuff.c:353 [inline]
pskb_expand_head+0x25e/0x1e20 net/core/skbuff.c:1676
netif_receive_generic_xdp+0x61c/0x2590 net/core/dev.c:4699
do_xdp_generic net/core/dev.c:4816 [inline]
__netif_receive_skb_core+0x294a/0x65a0 net/core/dev.c:5207
__netif_receive_skb_one_core net/core/dev.c:5382 [inline]
__netif_receive_skb+0xf2/0x640 net/core/dev.c:5498
process_backlog+0x517/0xbd0 net/core/dev.c:6365
__napi_poll+0x13e/0xca0 net/core/dev.c:6912
napi_poll net/core/dev.c:6979 [inline]
net_rx_action+0x726/0x14a0 net/core/dev.c:7065
__do_softirq+0x1b9/0x715 kernel/softirq.c:345
=====================================================