------------[ cut here ]------------ lockdep bfs error:-1 WARNING: CPU: 0 PID: 11866 at kernel/locking/lockdep.c:1714 print_bfs_bug+0x130/0x1e0 kernel/locking/lockdep.c:1714 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 11866 Comm: syz-executor.3 Not tainted 5.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x35 kernel/panic.c:582 report_bug+0x27b/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:105 [inline] fixup_bug arch/x86/kernel/traps.c:100 [inline] do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:197 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:216 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:print_bfs_bug+0x130/0x1e0 kernel/locking/lockdep.c:1714 Code: 3b 08 00 74 2c 48 c7 c7 80 0f 68 8c e8 f9 88 01 00 66 90 85 db 75 05 5b 5d 41 5c c3 89 ee 48 c7 c7 60 9e 2b 88 e8 a8 c9 eb ff <0f> 0b 5b 5d 41 5c c3 0f 0b e8 92 5f 82 06 85 c0 74 d7 48 c7 c0 d0 RSP: 0018:ffffc90017ba75c0 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 000000000000bbb5 RSI: ffffffff815d5ba7 RDI: fffff52002f74eaa RBP: 00000000ffffffff R08: ffff88803f486580 R09: ffffed1015cc45f2 R10: ffff8880ae622f8b R11: ffffed1015cc45f1 R12: ffff88803f486580 R13: ffff88803f486e50 R14: ffffc90017ba7640 R15: 0000000000000574 check_path+0x36/0x40 kernel/locking/lockdep.c:1790 check_noncircular+0x16d/0x3e0 kernel/locking/lockdep.c:1815 check_prev_add kernel/locking/lockdep.c:2496 [inline] check_prevs_add kernel/locking/lockdep.c:2601 [inline] validate_chain kernel/locking/lockdep.c:3218 [inline] __lock_acquire+0x2a9a/0x48a0 kernel/locking/lockdep.c:4380 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4959 __mutex_lock_common kernel/locking/mutex.c:956 [inline] __mutex_lock+0x156/0x13c0 kernel/locking/mutex.c:1103 prb_calc_retire_blk_tmo net/packet/af_packet.c:534 [inline] init_prb_bdqc net/packet/af_packet.c:592 [inline] packet_set_ring+0x1600/0x1ad0 net/packet/af_packet.c:4364 packet_setsockopt+0x511/0x2e80 net/packet/af_packet.c:3709 compat_packet_setsockopt+0x101/0x15d net/packet/af_packet.c:4061 __compat_sys_setsockopt+0x15d/0x310 net/compat.c:402 __do_compat_sys_setsockopt net/compat.c:415 [inline] __se_compat_sys_setsockopt net/compat.c:412 [inline] __ia32_compat_sys_setsockopt+0xb9/0x150 net/compat.c:412 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline] do_fast_syscall_32+0x270/0xe90 arch/x86/entry/common.c:396 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 Kernel Offset: disabled Rebooting in 86400 seconds..