ccid3_first_li: No RTT estimate available, using fallback RTT
ccid3_first_li: X_recv==0
BUG: stored value of X_recv is zero at net/dccp/ccids/ccid3.c:691/ccid3_first_li()
CPU: 0 PID: 17299 Comm: syz-executor.2 Not tainted 6.0.0-rc5-syzkaller-00097-g38eddeedbbea #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 ccid3_first_li.cold+0x67/0x17a net/dccp/ccids/ccid3.c:691
 tfrc_lh_interval_add+0x640/0x8e0 net/dccp/ccids/lib/loss_interval.c:157
 tfrc_rx_handle_loss+0x476/0x2030 net/dccp/ccids/lib/packet_history.c:328
 ccid3_hc_rx_packet_recv+0x3a9/0xf50 net/dccp/ccids/ccid3.c:744
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xe1/0x260 net/dccp/input.c:176
 dccp_rcv_established net/dccp/input.c:374 [inline]
 dccp_rcv_established+0x107/0x160 net/dccp/input.c:364
 dccp_v4_do_rcv+0x164/0x1a0 net/dccp/ipv4.c:666
 sk_backlog_rcv include/net/sock.h:1100 [inline]
 __sk_receive_skb+0x294/0x820 net/core/sock.c:565
 dccp_v4_rcv+0xfb5/0x18a0 net/dccp/ipv4.c:889
 ip_protocol_deliver_rcu+0x9b/0x7c0 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x2e8/0x4c0 net/ipv4/ip_input.c:233
 NF_HOOK include/linux/netfilter.h:307 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ip_local_deliver+0x1aa/0x200 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:461 [inline]
 ip_rcv_finish+0x1cb/0x2f0 net/ipv4/ip_input.c:444
 NF_HOOK include/linux/netfilter.h:307 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:564
 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5485
 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5599
 process_backlog+0x3a0/0x7c0 net/core/dev.c:5927
 __napi_poll+0xb3/0x6d0 net/core/dev.c:6511
 napi_poll net/core/dev.c:6578 [inline]
 net_rx_action+0x9c1/0xd90 net/core/dev.c:6689
 __do_softirq+0x1d3/0x9c6 kernel/softirq.c:571
 do_softirq.part.0+0xde/0x130 kernel/softirq.c:472
 </IRQ>
 <TASK>
 do_softirq kernel/softirq.c:464 [inline]
 __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:396
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:776 [inline]
 ip_finish_output2+0x7d0/0x2170 net/ipv4/ip_output.c:229
 __ip_finish_output net/ipv4/ip_output.c:306 [inline]
 __ip_finish_output+0x396/0x650 net/ipv4/ip_output.c:288
 ip_finish_output+0x2d/0x280 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x19f/0x310 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:451 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 __ip_queue_xmit+0x8de/0x1be0 net/ipv4/ip_output.c:532
 dccp_transmit_skb+0x7e9/0x1420 net/dccp/output.c:138
 dccp_send_sync+0x1c0/0x260 net/dccp/output.c:666
 __dccp_rcv_established.constprop.0+0x265/0x3b0 net/dccp/input.c:346
 dccp_rcv_established net/dccp/input.c:376 [inline]
 dccp_rcv_established+0x112/0x160 net/dccp/input.c:364
 dccp_v4_do_rcv+0x164/0x1a0 net/dccp/ipv4.c:666
 sk_backlog_rcv include/net/sock.h:1100 [inline]
 __release_sock+0x12f/0x3a0 net/core/sock.c:2852
 release_sock+0x54/0x1b0 net/core/sock.c:3408
 dccp_sendmsg+0x697/0xca0 net/dccp/proto.c:785
 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:819
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 ____sys_sendmsg+0x334/0x810 net/socket.c:2482
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536
 __sys_sendmmsg+0x18b/0x460 net/socket.c:2622
 __do_sys_sendmmsg net/socket.c:2651 [inline]
 __se_sys_sendmmsg net/socket.c:2648 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2648
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2257c89409

================================
WARNING: inconsistent lock state
6.0.0-rc5-syzkaller-00097-g38eddeedbbea #0 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
syz-executor.2/17299 [HC0[0]:SC1[1]:HE0:SE0] takes:
ffffffff8c0bf338 (vmap_area_lock){+.?.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline]
ffffffff8c0bf338 (vmap_area_lock){+.?.}-{2:2}, at: find_vmap_area+0x1c/0x130 mm/vmalloc.c:1836
{SOFTIRQ-ON-W} state was registered at:
  lock_acquire kernel/locking/lockdep.c:5666 [inline]
  lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631
  __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
  _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
  spin_lock include/linux/spinlock.h:349 [inline]
  alloc_vmap_area+0xa0b/0x1d50 mm/vmalloc.c:1617
  __get_vm_area_node+0x142/0x3f0 mm/vmalloc.c:2484
  get_vm_area_caller+0x43/0x50 mm/vmalloc.c:2537
  __ioremap_caller.constprop.0+0x292/0x600 arch/x86/mm/ioremap.c:280
  acpi_os_ioremap include/acpi/acpi_io.h:13 [inline]
  acpi_map drivers/acpi/osl.c:296 [inline]
  acpi_os_map_iomem+0x463/0x550 drivers/acpi/osl.c:355
  acpi_tb_acquire_table+0xd8/0x209 drivers/acpi/acpica/tbdata.c:142
  acpi_tb_validate_table drivers/acpi/acpica/tbdata.c:317 [inline]
  acpi_tb_validate_table+0x50/0x8c drivers/acpi/acpica/tbdata.c:308
  acpi_tb_verify_temp_table+0x84/0x674 drivers/acpi/acpica/tbdata.c:504
  acpi_reallocate_root_table+0x374/0x3e0 drivers/acpi/acpica/tbxface.c:180
  acpi_early_init+0x13a/0x438 drivers/acpi/bus.c:1214
  start_kernel+0x3cf/0x48f init/main.c:1099
  secondary_startup_64_no_verify+0xce/0xdb
irq event stamp: 1931
hardirqs last  enabled at (1930): [<ffffffff81618a0e>] __up_console_sem+0xae/0xc0 kernel/printk/printk.c:264
hardirqs last disabled at (1931): [<ffffffff894c03b8>] dump_stack_lvl+0x2e/0x134 lib/dump_stack.c:105
softirqs last  enabled at (1852): [<ffffffff87d92732>] rcu_read_unlock_bh include/linux/rcupdate.h:772 [inline]
softirqs last  enabled at (1852): [<ffffffff87d92732>] ip_finish_output2+0x7a2/0x2170 net/ipv4/ip_output.c:229
softirqs last disabled at (1853): [<ffffffff8149146e>] do_softirq.part.0+0xde/0x130 kernel/softirq.c:472

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(vmap_area_lock);
  <Interrupt>
    lock(vmap_area_lock);

 *** DEADLOCK ***

6 locks held by syz-executor.2/17299:
 #0: ffff88807912a930 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1712 [inline]
 #0: ffff88807912a930 (sk_lock-AF_INET){+.+.}-{0:0}, at: dccp_sendmsg+0x2bd/0xca0 net/dccp/proto.c:753
 #1: ffffffff8bf89400 (rcu_read_lock){....}-{1:2}, at: read_pnet include/net/net_namespace.h:369 [inline]
 #1: ffffffff8bf89400 (rcu_read_lock){....}-{1:2}, at: sock_net include/net/sock.h:643 [inline]
 #1: ffffffff8bf89400 (rcu_read_lock){....}-{1:2}, at: __ip_queue_xmit+0x3d/0x1be0 net/ipv4/ip_output.c:457
 #2: ffffffff8bf89400 (rcu_read_lock){....}-{1:2}, at: __skb_unlink include/linux/skbuff.h:2314 [inline]
 #2: ffffffff8bf89400 (rcu_read_lock){....}-{1:2}, at: __skb_dequeue include/linux/skbuff.h:2329 [inline]
 #2: ffffffff8bf89400 (rcu_read_lock){....}-{1:2}, at: process_backlog+0x34b/0x7c0 net/core/dev.c:5925
 #3: ffffffff8bf89400 (rcu_read_lock){....}-{1:2}, at: __skb_pull include/linux/skbuff.h:2599 [inline]
 #3: ffffffff8bf89400 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish+0x206/0x4c0 net/ipv4/ip_input.c:230
 #4: ffff8880799ee170 (slock-AF_INET6/1){+.-.}-{2:2}, at: __sk_receive_skb+0x34f/0x820 net/core/sock.c:556
 #5: ffff8880799ee1f0 (sk_lock-AF_INET6){+.+.}-{0:0}, at: dccp_v4_rcv+0xfb5/0x18a0 net/dccp/ipv4.c:889

stack backtrace:
CPU: 0 PID: 17299 Comm: syz-executor.2 Not tainted 6.0.0-rc5-syzkaller-00097-g38eddeedbbea #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_usage_bug kernel/locking/lockdep.c:3961 [inline]
 valid_state kernel/locking/lockdep.c:3973 [inline]
 mark_lock_irq kernel/locking/lockdep.c:4176 [inline]
 mark_lock.part.0.cold+0x18/0xd8 kernel/locking/lockdep.c:4632
 mark_lock kernel/locking/lockdep.c:4596 [inline]
 mark_usage kernel/locking/lockdep.c:4527 [inline]
 __lock_acquire+0x11d9/0x56d0 kernel/locking/lockdep.c:5007
 lock_acquire kernel/locking/lockdep.c:5666 [inline]
 lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:349 [inline]
 find_vmap_area+0x1c/0x130 mm/vmalloc.c:1836
 check_heap_object mm/usercopy.c:176 [inline]
 __check_object_size mm/usercopy.c:250 [inline]
 __check_object_size+0x1f8/0x700 mm/usercopy.c:212
 check_object_size include/linux/thread_info.h:199 [inline]
 __copy_from_user_inatomic include/linux/uaccess.h:62 [inline]
 copy_from_user_nmi arch/x86/lib/usercopy.c:47 [inline]
 copy_from_user_nmi+0xcb/0x130 arch/x86/lib/usercopy.c:31
 copy_code arch/x86/kernel/dumpstack.c:91 [inline]
 show_opcodes+0x59/0xb0 arch/x86/kernel/dumpstack.c:121
 show_iret_regs+0xd/0x33 arch/x86/kernel/dumpstack.c:149
 __show_regs+0x1e/0x60 arch/x86/kernel/process_64.c:74
 show_trace_log_lvl+0x25b/0x2ba arch/x86/kernel/dumpstack.c:292
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 ccid3_first_li.cold+0x67/0x17a net/dccp/ccids/ccid3.c:691
 tfrc_lh_interval_add+0x640/0x8e0 net/dccp/ccids/lib/loss_interval.c:157
 tfrc_rx_handle_loss+0x476/0x2030 net/dccp/ccids/lib/packet_history.c:328
 ccid3_hc_rx_packet_recv+0x3a9/0xf50 net/dccp/ccids/ccid3.c:744
 ccid_hc_rx_packet_recv net/dccp/ccid.h:182 [inline]
 dccp_deliver_input_to_ccids+0xe1/0x260 net/dccp/input.c:176
 dccp_rcv_established net/dccp/input.c:374 [inline]
 dccp_rcv_established+0x107/0x160 net/dccp/input.c:364
 dccp_v4_do_rcv+0x164/0x1a0 net/dccp/ipv4.c:666
 sk_backlog_rcv include/net/sock.h:1100 [inline]
 __sk_receive_skb+0x294/0x820 net/core/sock.c:565
 dccp_v4_rcv+0xfb5/0x18a0 net/dccp/ipv4.c:889
 ip_protocol_deliver_rcu+0x9b/0x7c0 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x2e8/0x4c0 net/ipv4/ip_input.c:233
 NF_HOOK include/linux/netfilter.h:307 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ip_local_deliver+0x1aa/0x200 net/ipv4/ip_input.c:254
 dst_input include/net/dst.h:461 [inline]
 ip_rcv_finish+0x1cb/0x2f0 net/ipv4/ip_input.c:444
 NF_HOOK include/linux/netfilter.h:307 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:564
 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5485
 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5599
 process_backlog+0x3a0/0x7c0 net/core/dev.c:5927
 __napi_poll+0xb3/0x6d0 net/core/dev.c:6511
 napi_poll net/core/dev.c:6578 [inline]
 net_rx_action+0x9c1/0xd90 net/core/dev.c:6689
 __do_softirq+0x1d3/0x9c6 kernel/softirq.c:571
 do_softirq.part.0+0xde/0x130 kernel/softirq.c:472
 </IRQ>
 <TASK>
 do_softirq kernel/softirq.c:464 [inline]
 __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:396
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:776 [inline]
 ip_finish_output2+0x7d0/0x2170 net/ipv4/ip_output.c:229
 __ip_finish_output net/ipv4/ip_output.c:306 [inline]
 __ip_finish_output+0x396/0x650 net/ipv4/ip_output.c:288
 ip_finish_output+0x2d/0x280 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x19f/0x310 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:451 [inline]
 ip_local_out net/ipv4/ip_output.c:126 [inline]
 __ip_queue_xmit+0x8de/0x1be0 net/ipv4/ip_output.c:532
 dccp_transmit_skb+0x7e9/0x1420 net/dccp/output.c:138
 dccp_send_sync+0x1c0/0x260 net/dccp/output.c:666
 __dccp_rcv_established.constprop.0+0x265/0x3b0 net/dccp/input.c:346
 dccp_rcv_established net/dccp/input.c:376 [inline]
 dccp_rcv_established+0x112/0x160 net/dccp/input.c:364
 dccp_v4_do_rcv+0x164/0x1a0 net/dccp/ipv4.c:666
 sk_backlog_rcv include/net/sock.h:1100 [inline]
 __release_sock+0x12f/0x3a0 net/core/sock.c:2852
 release_sock+0x54/0x1b0 net/core/sock.c:3408
 dccp_sendmsg+0x697/0xca0 net/dccp/proto.c:785
 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:819
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 ____sys_sendmsg+0x334/0x810 net/socket.c:2482
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536
 __sys_sendmmsg+0x18b/0x460 net/socket.c:2622
 __do_sys_sendmmsg net/socket.c:2651 [inline]
 __se_sys_sendmmsg net/socket.c:2648 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2648
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2257c89409
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2258d34168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f2257d9bf80 RCX: 00007f2257c89409
RDX: 000000000000ffc3 RSI: 0000000020001e80 RDI: 0000000000000004
RBP: 00007f2257ce4367 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe052a3fff R14: 00007f2258d34300 R15: 0000000000022000
 </TASK>
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2258d34168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f2257d9bf80 RCX: 00007f2257c89409
RDX: 000000000000ffc3 RSI: 0000000020001e80 RDI: 0000000000000004
RBP: 00007f2257ce4367 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe052a3fff R14: 00007f2258d34300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	nopw   %cs:0x0(%rax,%rax,1)
   9:	00 00 00
   c:	0f 1f 40 00          	nopl   0x0(%rax)
  10:	48 89 f8             	mov    %rdi,%rax
  13:	48 89 f7             	mov    %rsi,%rdi
  16:	48 89 d6             	mov    %rdx,%rsi
  19:	48 89 ca             	mov    %rcx,%rdx
  1c:	4d 89 c2             	mov    %r8,%r10
  1f:	4d 89 c8             	mov    %r9,%r8
  22:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  27:	0f 05                	syscall
* 29:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax <-- trapping instruction
  2f:	73 01                	jae    0x32
  31:	c3                   	retq
  32:	48 c7 c1 b8 ff ff ff 	mov    $0xffffffffffffffb8,%rcx
  39:	f7 d8                	neg    %eax
  3b:	64 89 01             	mov    %eax,%fs:(%rcx)
  3e:	48                   	rex.W