BUG: unable to handle page fault for address: ffffc90000d10030 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD b5800067 P4D b5800067 PUD b59ae067 PMD b529e067 PTE 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4496 Comm: syz-executor.0 Not tainted 5.9.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:bpf_dispatcher_nop_func include/linux/bpf.h:644 [inline] RIP: 0010:__bpf_trace_run kernel/trace/bpf_trace.c:2045 [inline] RIP: 0010:bpf_trace_run3+0x145/0x3f0 kernel/trace/bpf_trace.c:2083 Code: f7 ff 48 8d 7b 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 9f 02 00 00 48 8d 73 38 48 8d 7c 24 28 53 30 e8 e3 2b f7 ff e8 fe 79 65 07 31 ff 89 c3 89 c6 e8 23 24 RSP: 0018:ffffc9000192f1a0 EFLAGS: 00010082 RAX: 0000000000000000 RBX: ffffc90000d10000 RCX: ffffffff81781f30 RDX: 0000000000000000 RSI: ffffc90000d10038 RDI: ffffc9000192f1c8 RBP: 1ffff92000325e35 R08: 0000000000000000 R09: ffffffff8e977667 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: ffff888066e11a40 R14: 0000000000000001 R15: ffff8880a8279a40 FS: 00007fb326640700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000d10030 CR3: 00000000b2a6b000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __bpf_trace_sched_switch+0xdc/0x120 include/trace/events/sched.h:138 __traceiter_sched_switch+0x64/0xb0 include/trace/events/sched.h:138 trace_sched_switch include/trace/events/sched.h:138 [inline] __schedule+0xeb8/0x2130 kernel/sched/core.c:4520 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:4682 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:40 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] _raw_spin_unlock_irqrestore+0x49/0x50 kernel/locking/spinlock.c:191 __debug_check_no_obj_freed lib/debugobjects.c:997 [inline] debug_check_no_obj_freed+0x20c/0x420 lib/debugobjects.c:1018 slab_free_hook mm/slub.c:1536 [inline] slab_free_freelist_hook+0x107/0x150 mm/slub.c:1577 slab_free mm/slub.c:3142 [inline] kfree+0xdb/0x360 mm/slub.c:4124 skb_free_head net/core/skbuff.c:590 [inline] skb_release_data+0x6d9/0x910 net/core/skbuff.c:610 skb_release_all net/core/skbuff.c:664 [inline] __kfree_skb+0x46/0x60 net/core/skbuff.c:678 tcp_rcv_established+0x131d/0x1e40 net/ipv4/tcp_input.c:5783 tcp_v4_do_rcv+0x5d1/0x870 net/ipv4/tcp_ipv4.c:1652 sk_backlog_rcv include/net/sock.h:1010 [inline] __release_sock+0x134/0x3a0 net/core/sock.c:2523 release_sock+0x54/0x1b0 net/core/sock.c:3053 sk_stream_wait_memory+0x5bd/0xe60 net/core/stream.c:145 tcp_sendmsg_locked+0x1034/0x2d20 net/ipv4/tcp.c:1402 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1442 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:817 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45de59 Code: 0d b4 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb32663fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000028100 RCX: 000000000045de59 RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000005 RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffc39f8b0af R14: 00007fb3266409c0 R15: 000000000118bf2c Modules linked in: CR2: ffffc90000d10030 ---[ end trace 046b2a93a165259d ]--- RIP: 0010:bpf_dispatcher_nop_func include/linux/bpf.h:644 [inline] RIP: 0010:__bpf_trace_run kernel/trace/bpf_trace.c:2045 [inline] RIP: 0010:bpf_trace_run3+0x145/0x3f0 kernel/trace/bpf_trace.c:2083 Code: f7 ff 48 8d 7b 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 9f 02 00 00 48 8d 73 38 48 8d 7c 24 28 53 30 e8 e3 2b f7 ff e8 fe 79 65 07 31 ff 89 c3 89 c6 e8 23 24 RSP: 0018:ffffc9000192f1a0 EFLAGS: 00010082 RAX: 0000000000000000 RBX: ffffc90000d10000 RCX: ffffffff81781f30 RDX: 0000000000000000 RSI: ffffc90000d10038 RDI: ffffc9000192f1c8 RBP: 1ffff92000325e35 R08: 0000000000000000 R09: ffffffff8e977667 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: ffff888066e11a40 R14: 0000000000000001 R15: ffff8880a8279a40 FS: 00007fb326640700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000d10030 CR3: 00000000b2a6b000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600