RAX: 0000000000000000 RBX: 00007fccee198f60 RCX: 00007fccee085ae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007fcceb5fb1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc93cb309f R14: 00007fcceb5fb300 R15: 0000000000022000 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 16001 at kernel/bpf/cgroup.c:899 bpf_cgroup_link_release.part.0+0x2d1/0x3d0 kernel/bpf/cgroup.c:899 Modules linked in: CPU: 1 PID: 16001 Comm: syz-executor.5 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:bpf_cgroup_link_release.part.0+0x2d1/0x3d0 kernel/bpf/cgroup.c:899 Code: 24 0d 63 07 e9 b1 fe ff ff e8 7b 3d e3 ff 48 c7 c7 20 58 9c 8b e8 4f 01 a8 07 5b 5d 41 5c 41 5d e9 64 3d e3 ff e8 5f 3d e3 ff <0f> 0b e9 bd fd ff ff e8 e3 f5 29 00 e9 19 fe ff ff e8 d9 f5 29 00 RSP: 0018:ffffc90002b27dc8 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff888018fca100 RCX: ffffc900142e2000 RDX: 0000000000040000 RSI: ffffffff81948911 RDI: 0000000000000003 RBP: 00000000fffffff4 R08: 0000000000000000 R09: ffffffff8bacf5f3 R10: ffffffff819486cd R11: 0000000000000000 R12: ffff888018fca168 R13: ffff888018fca118 R14: ffffc9000285e000 R15: ffff8881407270a0 FS: 00007fcceb5fb700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcceb5faf78 CR3: 00000000683b6000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_cgroup_link_release+0x38/0x50 kernel/bpf/cgroup.c:888 bpf_link_free+0xe6/0x1b0 kernel/bpf/syscall.c:2461 bpf_link_put+0x161/0x1b0 kernel/bpf/syscall.c:2487 bpf_link_release+0x33/0x40 kernel/bpf/syscall.c:2495 __fput+0x286/0x9f0 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fccee085ae9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fcceb5fb188 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007fccee198f60 RCX: 00007fccee085ae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007fcceb5fb1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc93cb309f R14: 00007fcceb5fb300 R15: 0000000000022000