------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 0 PID: 11684 at kernel/locking/lockdep.c:183 hlock_class kernel/locking/lockdep.c:183 [inline] WARNING: CPU: 0 PID: 11684 at kernel/locking/lockdep.c:183 check_wait_context kernel/locking/lockdep.c:4010 [inline] WARNING: CPU: 0 PID: 11684 at kernel/locking/lockdep.c:183 __lock_acquire+0x1aab/0x2c30 kernel/locking/lockdep.c:4286 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 11684 Comm: syz-executor.5 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+0x1e9/0x30e lib/dump_stack.c:118 panic+0x264/0x7a0 kernel/panic.c:221 __warn+0x209/0x210 kernel/panic.c:582 report_bug+0x1ac/0x2d0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:105 [inline] do_error_trap+0xca/0x1c0 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:hlock_class kernel/locking/lockdep.c:183 [inline] RIP: 0010:check_wait_context kernel/locking/lockdep.c:4010 [inline] RIP: 0010:__lock_acquire+0x1aab/0x2c30 kernel/locking/lockdep.c:4286 Code: 13 08 00 0f 85 8d ea ff ff 31 db 48 c7 c7 19 91 e5 88 48 c7 c6 a3 61 ea 88 31 c0 e8 1f c4 ec ff 48 ba 00 00 00 00 00 fc ff df <0f> 0b e9 81 ea ff ff 31 db e9 70 ea ff ff 48 c7 c1 30 ed 55 8b 80 RSP: 0018:ffffc9001dfcf4f0 EFLAGS: 00010046 RAX: dcdbeb36feeeae00 RBX: 0000000000000000 RCX: 0000000000040000 RDX: dffffc0000000000 RSI: 000000000000e049 RDI: 000000000000e04a RBP: ffffc9001dfcf658 R08: ffffffff81791896 R09: fffffbfff125cc43 R10: fffffbfff125cc43 R11: 0000000000000000 R12: ffff888048878978 R13: 1ffff1100910f12f R14: 0000000000000831 R15: 0000000000000000 lock_acquire+0x169/0x480 kernel/locking/lockdep.c:4915 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:358 [inline] netif_addr_lock_bh include/linux/netdevice.h:4172 [inline] dev_mc_seq_show+0x40/0x220 net/core/net-procfs.c:325 seq_read+0x950/0xce0 fs/seq_file.c:247 pde_read fs/proc/inode.c:292 [inline] proc_reg_read+0x27f/0x3a0 fs/proc/inode.c:304 do_loop_readv_writev fs/read_write.c:715 [inline] do_iter_read+0x44b/0x550 fs/read_write.c:936 vfs_readv+0xc2/0x120 fs/read_write.c:1054 kernel_readv fs/splice.c:365 [inline] default_file_splice_read+0x579/0xa40 fs/splice.c:422 do_splice_to fs/splice.c:892 [inline] splice_direct_to_actor+0x3c1/0xb40 fs/splice.c:971 do_splice_direct+0x201/0x340 fs/splice.c:1080 do_sendfile+0x809/0xfe0 fs/read_write.c:1521 __do_sys_sendfile64 fs/read_write.c:1582 [inline] __se_sys_sendfile64 fs/read_write.c:1568 [inline] __x64_sys_sendfile64+0x164/0x1a0 fs/read_write.c:1568 do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45ca69 Code: 0d b7 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 b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0567afbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00000000004fc580 RCX: 000000000045ca69 RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000009 RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000edc0 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000008dc R14: 00000000004cba56 R15: 00007f0567afc6d4 Kernel Offset: disabled Rebooting in 86400 seconds..