==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:71 [inline]
BUG: KASAN: null-ptr-deref in atomic64_read include/linux/atomic/atomic-instrumented.h:605 [inline]
BUG: KASAN: null-ptr-deref in flush_tlb_func+0x43/0x550 arch/x86/mm/tlb.c:736
Read of size 8 at addr 0000000000000329 by task kworker/u4:6/8596
CPU: 1 PID: 8596 Comm: kworker/u4:6 Tainted: G W 5.15.148-syzkaller-00718-g993bed180178 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: netns cleanup_net
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
__kasan_report mm/kasan/report.c:431 [inline]
kasan_report+0x16f/0x1c0 mm/kasan/report.c:444
kasan_check_range+0x293/0x2a0 mm/kasan/generic.c:189
__kasan_check_read+0x11/0x20 mm/kasan/shadow.c:31
instrument_atomic_read include/linux/instrumented.h:71 [inline]
atomic64_read include/linux/atomic/atomic-instrumented.h:605 [inline]
flush_tlb_func+0x43/0x550 arch/x86/mm/tlb.c:736
flush_smp_call_function_queue+0x222/0x6a0 kernel/smp.c:628
generic_smp_call_function_single_interrupt+0x13/0x20 kernel/smp.c:544
__sysvec_call_function_single+0x63/0x1b0 arch/x86/kernel/smp.c:248
sysvec_call_function_single+0x41/0xb0 arch/x86/kernel/smp.c:243
asm_sysvec_call_function_single+0x1b/0x20 arch/x86/include/asm/idtentry.h:646
RIP: 0010:filter_irq_stacks+0x47/0xa0 kernel/stacktrace.c:400
Code: 00 00 00 85 48 89 fb eb 0c 49 ff c7 48 83 c3 08 4d 39 fc 74 56 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 ef e1 52 00 4b 8b 04 fe 48 c7 c1 90 01 e0 84 48
RSP: 0018:ffffc900001d0860 EFLAGS: 00000246
RAX: 1ffff9200003a128 RBX: ffffc900001d0940 RCX: dffffc0000000000
RDX: 0000000000000800 RSI: 0000000000000020 RDI: ffffc900001d0900
RBP: ffffc900001d0888 R08: ffffc900001d0868 R09: 000000000000001f
R10: ffffc900001d0870 R11: dffffc0000000001 R12: 0000000000000020
R13: ffffffff85000000 R14: ffffc900001d0900 R15: 0000000000000008
__stack_depot_save+0x34/0x470 lib/stackdepot.c:291
kasan_save_stack mm/kasan/common.c:39 [inline]
kasan_set_track+0x5d/0x70 mm/kasan/common.c:45
kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
____kasan_slab_free+0x126/0x160 mm/kasan/common.c:365
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
kasan_slab_free include/linux/kasan.h:193 [inline]
slab_free_hook mm/slub.c:1723 [inline]
slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749
slab_free mm/slub.c:3519 [inline]
kmem_cache_free+0x116/0x2e0 mm/slub.c:3535
__d_free+0x23/0x30 fs/dcache.c:273
rcu_do_batch+0x57a/0xc10 kernel/rcu/tree.c:2523
rcu_core+0x517/0x1020 kernel/rcu/tree.c:2763
rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2776
__do_softirq+0x26d/0x5bf kernel/softirq.c:565
do_softirq+0xf6/0x150 kernel/softirq.c:452
__local_bh_enable_ip+0x75/0x80 kernel/softirq.c:379
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline]
_raw_spin_unlock_bh+0x51/0x60 kernel/locking/spinlock.c:210
__sock_map_delete net/core/sock_map.c:426 [inline]
sock_map_delete_elem+0xcb/0x130 net/core/sock_map.c:448
bpf_prog_2c29ac5cdc6b1842+0x3a/0xd40
bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
__bpf_prog_run include/linux/filter.h:625 [inline]
bpf_prog_run include/linux/filter.h:632 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1883 [inline]
bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1920
__bpf_trace_tlb_flush+0x23/0x30 include/trace/events/tlb.h:38
trace_tlb_flush include/trace/events/tlb.h:38 [inline]
switch_mm_irqs_off+0x616/0x9b0 arch/x86/mm/tlb.c:629
context_switch kernel/sched/core.c:5137 [inline]
__schedule+0xb2b/0x1590 kernel/sched/core.c:6512
preempt_schedule_common+0x9b/0xf0 kernel/sched/core.c:6688
preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6713
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__local_bh_enable_ip+0x6a/0x80 kernel/softirq.c:386
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline]
_raw_spin_unlock_bh+0x51/0x60 kernel/locking/spinlock.c:210
spin_unlock_bh include/linux/spinlock.h:408 [inline]
tcp_metrics_flush_all+0x1b1/0x210 net/ipv4/tcp_metrics.c:916
tcp_net_metrics_exit_batch+0x10/0x20 net/ipv4/tcp_metrics.c:1035
ops_exit_list net/core/net_namespace.c:174 [inline]
cleanup_net+0x6ce/0xc00 net/core/net_namespace.c:596
process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325
worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472
kthread+0x421/0x510 kernel/kthread.c:337
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
==================================================================
general protection fault, probably for non-canonical address 0xdffffc0000000065: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000328-0x000000000000032f]
CPU: 1 PID: 8596 Comm: kworker/u4:6 Tainted: G B W 5.15.148-syzkaller-00718-g993bed180178 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: netns cleanup_net
RIP: 0010:arch_atomic64_read arch/x86/include/asm/atomic64_64.h:22 [inline]
RIP: 0010:atomic64_read include/linux/atomic/atomic-instrumented.h:606 [inline]
RIP: 0010:flush_tlb_func+0x4a/0x550 arch/x86/mm/tlb.c:736
Code: 8b 35 ca 8b cd 7e 65 66 44 8b 25 d1 8b cd 7e 49 8d 9e 28 03 00 00 48 89 df be 08 00 00 00 e8 ed 5a 7c 00 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 f7 58 7c 00 4c 8b 3b 66 44 89 65
RSP: 0018:ffffc900001d0690 EFLAGS: 00010006
RAX: 0000000000000065 RBX: 0000000000000329 RCX: ffff8881387693c0
RDX: 0000000080010104 RSI: 0000000000000092 RDI: 00000000ffffffff
RBP: ffffc900001d0700 R08: ffffffff81416e7b R09: 0000000000000003
R10: fffffbfff0e5224c R11: dffffc0000000001 R12: 1ffff1103ee20000
R13: ffff8881f7036580 R14: 0000000000000001 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3957c2afe0 CR3: 000000011dd94000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
flush_smp_call_function_queue+0x222/0x6a0 kernel/smp.c:628
generic_smp_call_function_single_interrupt+0x13/0x20 kernel/smp.c:544
__sysvec_call_function_single+0x63/0x1b0 arch/x86/kernel/smp.c:248
sysvec_call_function_single+0x41/0xb0 arch/x86/kernel/smp.c:243
asm_sysvec_call_function_single+0x1b/0x20 arch/x86/include/asm/idtentry.h:646
RIP: 0010:filter_irq_stacks+0x47/0xa0 kernel/stacktrace.c:400
Code: 00 00 00 85 48 89 fb eb 0c 49 ff c7 48 83 c3 08 4d 39 fc 74 56 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 ef e1 52 00 4b 8b 04 fe 48 c7 c1 90 01 e0 84 48
RSP: 0018:ffffc900001d0860 EFLAGS: 00000246
RAX: 1ffff9200003a128 RBX: ffffc900001d0940 RCX: dffffc0000000000
RDX: 0000000000000800 RSI: 0000000000000020 RDI: ffffc900001d0900
RBP: ffffc900001d0888 R08: ffffc900001d0868 R09: 000000000000001f
R10: ffffc900001d0870 R11: dffffc0000000001 R12: 0000000000000020
R13: ffffffff85000000 R14: ffffc900001d0900 R15: 0000000000000008
__stack_depot_save+0x34/0x470 lib/stackdepot.c:291
kasan_save_stack mm/kasan/common.c:39 [inline]
kasan_set_track+0x5d/0x70 mm/kasan/common.c:45
kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
____kasan_slab_free+0x126/0x160 mm/kasan/common.c:365
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
kasan_slab_free include/linux/kasan.h:193 [inline]
slab_free_hook mm/slub.c:1723 [inline]
slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749
slab_free mm/slub.c:3519 [inline]
kmem_cache_free+0x116/0x2e0 mm/slub.c:3535
__d_free+0x23/0x30 fs/dcache.c:273
rcu_do_batch+0x57a/0xc10 kernel/rcu/tree.c:2523
rcu_core+0x517/0x1020 kernel/rcu/tree.c:2763
rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2776
__do_softirq+0x26d/0x5bf kernel/softirq.c:565
do_softirq+0xf6/0x150 kernel/softirq.c:452
__local_bh_enable_ip+0x75/0x80 kernel/softirq.c:379
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline]
_raw_spin_unlock_bh+0x51/0x60 kernel/locking/spinlock.c:210
__sock_map_delete net/core/sock_map.c:426 [inline]
sock_map_delete_elem+0xcb/0x130 net/core/sock_map.c:448
bpf_prog_2c29ac5cdc6b1842+0x3a/0xd40
bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
__bpf_prog_run include/linux/filter.h:625 [inline]
bpf_prog_run include/linux/filter.h:632 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1883 [inline]
bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1920
__bpf_trace_tlb_flush+0x23/0x30 include/trace/events/tlb.h:38
trace_tlb_flush include/trace/events/tlb.h:38 [inline]
switch_mm_irqs_off+0x616/0x9b0 arch/x86/mm/tlb.c:629
context_switch kernel/sched/core.c:5137 [inline]
__schedule+0xb2b/0x1590 kernel/sched/core.c:6512
preempt_schedule_common+0x9b/0xf0 kernel/sched/core.c:6688
preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6713
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__local_bh_enable_ip+0x6a/0x80 kernel/softirq.c:386
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline]
_raw_spin_unlock_bh+0x51/0x60 kernel/locking/spinlock.c:210
spin_unlock_bh include/linux/spinlock.h:408 [inline]
tcp_metrics_flush_all+0x1b1/0x210 net/ipv4/tcp_metrics.c:916
tcp_net_metrics_exit_batch+0x10/0x20 net/ipv4/tcp_metrics.c:1035
ops_exit_list net/core/net_namespace.c:174 [inline]
cleanup_net+0x6ce/0xc00 net/core/net_namespace.c:596
process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325
worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472
kthread+0x421/0x510 kernel/kthread.c:337
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Modules linked in:
---[ end trace eb4d4ee39583463b ]---
RIP: 0010:arch_atomic64_read arch/x86/include/asm/atomic64_64.h:22 [inline]
RIP: 0010:atomic64_read include/linux/atomic/atomic-instrumented.h:606 [inline]
RIP: 0010:flush_tlb_func+0x4a/0x550 arch/x86/mm/tlb.c:736
Code: 8b 35 ca 8b cd 7e 65 66 44 8b 25 d1 8b cd 7e 49 8d 9e 28 03 00 00 48 89 df be 08 00 00 00 e8 ed 5a 7c 00 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 f7 58 7c 00 4c 8b 3b 66 44 89 65
RSP: 0018:ffffc900001d0690 EFLAGS: 00010006
RAX: 0000000000000065 RBX: 0000000000000329 RCX: ffff8881387693c0
RDX: 0000000080010104 RSI: 0000000000000092 RDI: 00000000ffffffff
RBP: ffffc900001d0700 R08: ffffffff81416e7b R09: 0000000000000003
R10: fffffbfff0e5224c R11: dffffc0000000001 R12: 1ffff1103ee20000
R13: ffff8881f7036580 R14: 0000000000000001 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3957c2afe0 CR3: 000000011dd94000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 85 48 89 fb eb add %al,-0x140476b8(%rbp)
8: 0c 49 or $0x49,%al
a: ff c7 inc %edi
c: 48 83 c3 08 add $0x8,%rbx
10: 4d 39 fc cmp %r15,%r12
13: 74 56 je 0x6b
15: 48 89 d8 mov %rbx,%rax
18: 48 c1 e8 03 shr $0x3,%rax
1c: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
23: fc ff df
26: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1)
* 2a: 74 08 je 0x34 <-- trapping instruction
2c: 48 89 df mov %rbx,%rdi
2f: e8 ef e1 52 00 call 0x52e223
34: 4b 8b 04 fe mov (%r14,%r15,8),%rax
38: 48 c7 c1 90 01 e0 84 mov $0xffffffff84e00190,%rcx
3f: 48 rex.W