=====================================================
BUG: KMSAN: uninit-value in netif_receive_generic_xdp+0x15c2/0x2590 net/core/dev.c:4751
CPU: 1 PID: 24999 Comm: syz-executor.2 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:kmsan_get_metadata+0x29/0x180 mm/kmsan/kmsan_shadow.c:182
Code: 00 55 48 89 e5 41 57 41 56 53 41 89 d6 48 89 fb 48 83 e3 fc 85 d2 48 0f 44 df 40 f6 c7 03 48 0f 44 df 48 89 df e8 c7 df ff ff <84> c0 75 0c 48 89 df e8 eb df ff ff 84 c0 74 67 f6 c3 03 74 09 45
RSP: 0018:ffff888166cafa78 EFLAGS: 00000246
RAX: ffffd0ffffffff00 RBX: ffff888121c46710 RCX: 0000000121446700
RDX: 0000000000000001 RSI: 0000000000000240 RDI: ffff888121c46710
RBP: ffff888166cafa90 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000002abdb5f5 R11: ffff88815c5d9f40 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
kmsan_get_shadow_origin_ptr+0x84/0xb0 mm/kmsan/kmsan_shadow.c:150
__msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55
real_mount fs/notify/fsnotify.c:474 [inline]
fsnotify+0x1e9/0x40b0 fs/notify/fsnotify.c:474
fsnotify_parent include/linux/fsnotify.h:71 [inline]
fsnotify_file include/linux/fsnotify.h:90 [inline]
fsnotify_close include/linux/fsnotify.h:279 [inline]
__fput+0x55b/0xf00 fs/file_table.c:266
____fput+0x37/0x40 fs/file_table.c:313
task_work_run+0x140/0x280 kernel/task_work.c:140
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:174 [inline]
exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301
__do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145
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: 0023:0xf7f95549
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:00000000ffedaeb0 EFLAGS: 00000286 ORIG_RAX: 0000000000000006
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 000000000816c000 RDI: 0000000000000000
RBP: 000000000816c000 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: 1 PID: 24999 at net/core/filter.c:8111 bpf_warn_invalid_xdp_action+0x147/0x150 net/core/filter.c:8109
Modules linked in:
CPU: 1 PID: 24999 Comm: syz-executor.2 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 e4 2e 9e 90 44 89 f2 31 c0 e8 29 c9 ef 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:ffff88813fd05890 EFLAGS: 00010246
RAX: 78282f1b9534b300 RBX: 00000000ffffff00 RCX: ffff88815c5d9f40
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88813fd058b8 R08: ffffffff81a4b0aa R09: ffff88813fffa000
R10: 0000000000000003 R11: 00000000ffffffff R12: 00000000066900cc
R13: ffff88813fd27b00 R14: 00000000ffffffea R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff88813fd00000(0063) knlGS:000000000a436380
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000002f321000 CR3: 000000015d14e000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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:kmsan_get_metadata+0x29/0x180 mm/kmsan/kmsan_shadow.c:182
Code: 00 55 48 89 e5 41 57 41 56 53 41 89 d6 48 89 fb 48 83 e3 fc 85 d2 48 0f 44 df 40 f6 c7 03 48 0f 44 df 48 89 df e8 c7 df ff ff <84> c0 75 0c 48 89 df e8 eb df ff ff 84 c0 74 67 f6 c3 03 74 09 45
RSP: 0018:ffff888166cafa78 EFLAGS: 00000246
RAX: ffffd0ffffffff00 RBX: ffff888121c46710 RCX: 0000000121446700
RDX: 0000000000000001 RSI: 0000000000000240 RDI: ffff888121c46710
RBP: ffff888166cafa90 R08: ffffea000000000f R09: ffff88813fffa000
R10: 000000002abdb5f5 R11: ffff88815c5d9f40 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
kmsan_get_shadow_origin_ptr+0x84/0xb0 mm/kmsan/kmsan_shadow.c:150
__msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:55
real_mount fs/notify/fsnotify.c:474 [inline]
fsnotify+0x1e9/0x40b0 fs/notify/fsnotify.c:474
fsnotify_parent include/linux/fsnotify.h:71 [inline]
fsnotify_file include/linux/fsnotify.h:90 [inline]
fsnotify_close include/linux/fsnotify.h:279 [inline]
__fput+0x55b/0xf00 fs/file_table.c:266
____fput+0x37/0x40 fs/file_table.c:313
task_work_run+0x140/0x280 kernel/task_work.c:140
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:174 [inline]
exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301
__do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145
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: 0023:0xf7f95549
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:00000000ffedaeb0 EFLAGS: 00000286 ORIG_RAX: 0000000000000006
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 000000000816c000 RDI: 0000000000000000
RBP: 000000000816c000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
---[ end trace a40ad04919c63f0a ]---