sch_fq: defrate 1275068416 ignored. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7568 at fs/inode.c:286 drop_nlink.cold+0x11/0x41 syzkaller/managers/linux-4-19/kernel/fs/inode.c:286 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 7568 Comm: syz-executor.3 Not tainted 4.19.172-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack syzkaller/managers/linux-4-19/kernel/lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef syzkaller/managers/linux-4-19/kernel/lib/dump_stack.c:118 panic+0x26a/0x50e syzkaller/managers/linux-4-19/kernel/kernel/panic.c:186 __warn.cold+0x20/0x5a syzkaller/managers/linux-4-19/kernel/kernel/panic.c:541 report_bug+0x262/0x2b0 syzkaller/managers/linux-4-19/kernel/lib/bug.c:186 fixup_bug syzkaller/managers/linux-4-19/kernel/arch/x86/kernel/traps.c:178 [inline] fixup_bug syzkaller/managers/linux-4-19/kernel/arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 syzkaller/managers/linux-4-19/kernel/arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/entry_64.S:1038 RIP: 0010:drop_nlink.cold+0x11/0x41 syzkaller/managers/linux-4-19/kernel/fs/inode.c:286 Code: f9 e8 87 b2 70 f9 48 c7 c7 c0 a1 74 88 e8 fa ee fe ff 0f 0b e9 ca 20 b7 f9 e8 6f b2 70 f9 48 c7 c7 c0 a9 74 88 e8 e2 ee fe ff <0f> 0b b8 ff ff 37 00 4c 89 e2 48 c1 ea 03 48 c1 e0 2a 0f b6 04 02 RSP: 0018:ffff8880501b7dc8 EFLAGS: 00010282 RAX: 0000000000000024 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000009611 RSI: ffffffff814de0d1 RDI: ffffed100a036fab RBP: ffff8880522515f0 R08: 0000000000000024 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff888052251638 R13: ffff88803967e9e0 R14: ffff8880522515f0 R15: ffff88803967e9e0 inode_dec_link_count syzkaller/managers/linux-4-19/kernel/./include/linux/fs.h:2107 [inline] minix_rmdir+0xa1/0xd0 syzkaller/managers/linux-4-19/kernel/fs/minix/namei.c:178 vfs_rmdir.part.0+0x10f/0x3d0 syzkaller/managers/linux-4-19/kernel/fs/namei.c:3882 vfs_rmdir syzkaller/managers/linux-4-19/kernel/fs/namei.c:3868 [inline] do_rmdir+0x3fd/0x490 syzkaller/managers/linux-4-19/kernel/fs/namei.c:3943 do_syscall_64+0xf9/0x620 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x465b09 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:00007f36be49b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000480 RBP: 00000000004b069f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007fff0bcec3ff R14: 00007f36be49b300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..