------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 0 PID: 9803 at kernel/locking/lockdep.c:183 hlock_class kernel/locking/lockdep.c:183 [inline] WARNING: CPU: 0 PID: 9803 at kernel/locking/lockdep.c:183 hlock_class kernel/locking/lockdep.c:172 [inline] WARNING: CPU: 0 PID: 9803 at kernel/locking/lockdep.c:183 check_wait_context kernel/locking/lockdep.c:4054 [inline] WARNING: CPU: 0 PID: 9803 at kernel/locking/lockdep.c:183 __lock_acquire+0x2147/0x48a0 kernel/locking/lockdep.c:4330 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 9803 Comm: syz-executor.2 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:hlock_class kernel/locking/lockdep.c:183 [inline] RIP: 0010:hlock_class kernel/locking/lockdep.c:172 [inline] RIP: 0010:check_wait_context kernel/locking/lockdep.c:4054 [inline] RIP: 0010:__lock_acquire+0x2147/0x48a0 kernel/locking/lockdep.c:4330 Code: 08 84 d2 0f 85 ca 25 00 00 8b 35 44 dc 31 09 85 f6 0f 85 53 fb ff ff 48 c7 c6 20 9e 2b 88 48 c7 c7 a0 9d 2b 88 e8 21 11 eb ff <0f> 0b e9 39 fb ff ff e8 0d a7 81 06 85 c0 0f 84 74 fb ff ff 48 c7 RSP: 0018:ffffc900177871d8 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 000000000000c4f9 RSI: ffffffff815d5ba7 RDI: fffff52002ef0e2d RBP: ffff88806bcc0e60 R08: ffff88806bcc0540 R09: fffffbfff1336505 R10: ffffffff899b2823 R11: fffffbfff1336504 R12: 00000000000006be R13: ffff88806bcc0540 R14: 00000000000406be R15: 00000000000006be lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4959 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:358 [inline] netif_addr_lock_bh include/linux/netdevice.h:4244 [inline] dev_mc_seq_show net/core/net-procfs.c:325 [inline] dev_mc_seq_show+0x3c/0x240 net/core/net-procfs.c:317 seq_read+0xa12/0xfd0 fs/seq_file.c:248 pde_read fs/proc/inode.c:306 [inline] proc_reg_read+0x2b8/0x370 fs/proc/inode.c:318 do_loop_readv_writev fs/read_write.c:715 [inline] do_loop_readv_writev fs/read_write.c:702 [inline] do_iter_read+0x483/0x650 fs/read_write.c:936 vfs_readv+0xf0/0x160 fs/read_write.c:1054 kernel_readv fs/splice.c:355 [inline] default_file_splice_read.isra.0+0x4fb/0xa20 fs/splice.c:412 do_splice_to+0x137/0x170 fs/splice.c:871 splice_direct_to_actor+0x307/0x980 fs/splice.c:950 do_splice_direct+0x1b4/0x280 fs/splice.c:1059 do_sendfile+0x555/0xc50 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+0x1cc/0x210 fs/read_write.c:1568 do_syscall_64+0xf6/0x7d0 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:00007f0261d3ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00000000004fc580 RCX: 000000000045ca69 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 000000000078c040 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000edc0 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000008dc R14: 00000000004cba56 R15: 00007f0261d3b6d4 Kernel Offset: disabled Rebooting in 86400 seconds..