BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1508 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 6801, name: syz-executor.3 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 INFO: lockdep is turned off. irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x20e1/0x7190 kernel/fork.c:2194 softirqs last enabled at (0): [] copy_process+0x2129/0x7190 kernel/fork.c:2198 softirqs last disabled at (0): [<0000000000000000>] 0x0 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 1 PID: 6801 Comm: syz-executor.3 Not tainted 6.1.0-rc1-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 __might_resched.cold+0x222/0x26b kernel/sched/core.c:9890 down_read+0x71/0x450 kernel/locking/rwsem.c:1508 kernfs_walk_and_get_ns+0xcc/0x3a0 fs/kernfs/dir.c:898 kernfs_walk_and_get include/linux/kernfs.h:603 [inline] cgroup_get_from_path+0x61/0x610 kernel/cgroup/cgroup.c:6777 cgroup_mt_check_v1+0x19a/0x2f0 net/netfilter/xt_cgroup.c:56 xt_check_match+0x275/0x9f0 net/netfilter/x_tables.c:523 check_match net/ipv4/netfilter/ip_tables.c:473 [inline] find_check_match net/ipv4/netfilter/ip_tables.c:489 [inline] find_check_entry.constprop.0+0x31a/0x9a0 net/ipv4/netfilter/ip_tables.c:539 translate_table+0xc26/0x16a0 net/ipv4/netfilter/ip_tables.c:718 translate_compat_table+0x137c/0x1840 net/ipv4/netfilter/ip_tables.c:1466 compat_do_replace.constprop.0+0x24e/0x400 net/ipv4/netfilter/ip_tables.c:1520 do_ipt_set_ctl+0x5b0/0xb10 net/ipv4/netfilter/ip_tables.c:1627 nf_setsockopt+0x83/0xe0 net/netfilter/nf_sockopt.c:101 ip_setsockopt+0xee/0x100 net/ipv4/ip_sockglue.c:1444 udp_setsockopt+0x76/0xc0 net/ipv4/udp.c:2791 __sys_setsockopt+0x2d6/0x690 net/socket.c:2252 __do_sys_setsockopt net/socket.c:2263 [inline] __se_sys_setsockopt net/socket.c:2260 [inline] __ia32_sys_setsockopt+0xb9/0x150 net/socket.c:2260 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7f47549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7f425cc EFLAGS: 00000296 ORIG_RAX: 000000000000016e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000040 RSI: 0000000020000b40 RDI: 000000000000129c RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 xt_cgroup: invalid path, errno=-2 ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi