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BUG: KMSAN: uninit-value in crc32_body lib/crc32.c:112 [inline]
BUG: KMSAN: uninit-value in crc32_le_generic lib/crc32.c:179 [inline]
BUG: KMSAN: uninit-value in __crc32c_le_base+0x4fa/0xd30 lib/crc32.c:202
CPU: 1 PID: 3546 Comm: syz-executor.0 Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x220 lib/dump_stack.c:118
 kmsan_report+0xf8/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215
 crc32_body lib/crc32.c:112 [inline]
 crc32_le_generic lib/crc32.c:179 [inline]
 __crc32c_le_base+0x4fa/0xd30 lib/crc32.c:202
 chksum_update+0xb2/0x110 crypto/crc32c_generic.c:90
 crypto_shash_update+0x4ed/0x550 crypto/shash.c:107
 crc32c+0x150/0x220 lib/libcrc32c.c:47
 sctp_csum_update+0x89/0xa0 include/net/sctp/checksum.h:36
 __skb_checksum+0x12f7/0x1300 net/core/skbuff.c:2640
 sctp_compute_cksum include/net/sctp/checksum.h:59 [inline]
 sctp_packet_pack net/sctp/output.c:528 [inline]
 sctp_packet_transmit+0x422d/0x4380 net/sctp/output.c:597
 sctp_outq_flush_transports net/sctp/outqueue.c:1146 [inline]
 sctp_outq_flush+0x1823/0x5d80 net/sctp/outqueue.c:1194
 sctp_outq_uncork+0xd0/0xf0 net/sctp/outqueue.c:757
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1786 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1189 [inline]
 sctp_do_sm+0x9105/0x9760 net/sctp/sm_sideeffect.c:1160
 sctp_generate_heartbeat_event+0x3c6/0x5a0 net/sctp/sm_sideeffect.c:391
 call_timer_fn+0x232/0x530 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers+0xd60/0x1270 kernel/time/timer.c:1773
 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1786
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:375 [inline]
 irq_exit+0x230/0x280 kernel/softirq.c:416
 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:536
 smp_apic_timer_interrupt+0x48/0x70 arch/x86/kernel/apic/apic.c:1140
 apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:834
 </IRQ>
RIP: 0010:massage_pgprot arch/x86/include/asm/pgtable.h:542 [inline]
RIP: 0010:check_pgprot arch/x86/include/asm/pgtable.h:550 [inline]
RIP: 0010:pfn_pte arch/x86/include/asm/pgtable.h:570 [inline]
RIP: 0010:do_anonymous_page mm/memory.c:3115 [inline]
RIP: 0010:handle_pte_fault mm/memory.c:3945 [inline]
RIP: 0010:__handle_mm_fault mm/memory.c:4077 [inline]
RIP: 0010:handle_mm_fault+0x7924/0x9f80 mm/memory.c:4114
Code: 1a 00 4d 89 e2 49 89 d8 48 8b 00 49 21 c5 4c 89 e6 48 f7 d6 48 09 c6 31 db 41 b9 00 00 00 00 4d 85 c0 0f 94 c1 74 03 44 8b 0a <45> 84 ff 4c 0f 45 ee 8b b5 e0 fe ff ff 44 0f 45 ce 48 8b bd c8 fe
RSP: 0000:ffffaad68badfbb0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffd04008145000
RDX: ffff9a1bdf425d78 RSI: 0000000000000000 RDI: ffffffffa2c9cd78
RBP: ffffaad68badfd38 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000001 R12: ffffffffffffffff
R13: 0000000000000000 R14: ffff9a1acc6d8400 R15: 0000000000000000
 do_user_addr_fault+0x905/0x1510 arch/x86/mm/fault.c:1461
 __do_page_fault+0x1a2/0x410 arch/x86/mm/fault.c:1526
 do_page_fault+0xbb/0x500 arch/x86/mm/fault.c:1550
 page_fault+0x4e/0x60 arch/x86/entry/entry_64.S:1213
RIP: 0033:0x40db9c
Code: 8c 02 50 bf 75 00 48 83 c0 08 48 83 f8 48 75 e6 49 63 c6 0f b6 4c 24 5b 48 69 c0 a8 00 00 00 88 88 c0 bf 75 00 e8 f4 56 ff ff <83> 05 61 24 55 00 01 80 7c 24 59 00 74 0b f6 44 24 08 01 0f 84 98
RSP: 002b:0000000000a6fc00 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000045a9e9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 000000000075bf28
RBP: 000000000075bf2c R08: 00007f50126b3700 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf20
R13: 0000000000000004 R14: 0000000000000000 R15: 000000000075bf2c

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline]
 kmsan_internal_chain_origin+0xc5/0x140 mm/kmsan/kmsan.c:310
 kmsan_memcpy_memmove_metadata+0x25c/0x2e0 mm/kmsan/kmsan.c:247
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:267
 __msan_memcpy+0x44/0x50 mm/kmsan/kmsan_instr.c:116
 skb_put_data include/linux/skbuff.h:2235 [inline]
 sctp_packet_pack net/sctp/output.c:470 [inline]
 sctp_packet_transmit+0x1dd1/0x4380 net/sctp/output.c:597
 sctp_outq_flush_transports net/sctp/outqueue.c:1146 [inline]
 sctp_outq_flush+0x1823/0x5d80 net/sctp/outqueue.c:1194
 sctp_outq_uncork+0xd0/0xf0 net/sctp/outqueue.c:757
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1786 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1189 [inline]
 sctp_do_sm+0x9105/0x9760 net/sctp/sm_sideeffect.c:1160
 sctp_generate_heartbeat_event+0x3c6/0x5a0 net/sctp/sm_sideeffect.c:391
 call_timer_fn+0x232/0x530 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers+0xd60/0x1270 kernel/time/timer.c:1773
 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1786
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline]
 kmsan_internal_chain_origin+0xc5/0x140 mm/kmsan/kmsan.c:310
 kmsan_memcpy_memmove_metadata+0x25c/0x2e0 mm/kmsan/kmsan.c:247
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:267
 __msan_memcpy+0x44/0x50 mm/kmsan/kmsan_instr.c:116
 skb_put_data include/linux/skbuff.h:2235 [inline]
 sctp_addto_chunk+0x21c/0x430 net/sctp/sm_make_chunk.c:1494
 sctp_make_heartbeat+0x4eb/0x700 net/sctp/sm_make_chunk.c:1164
 sctp_sf_heartbeat net/sctp/sm_statefuns.c:990 [inline]
 sctp_sf_sendbeat_8_3+0x18d/0xb10 net/sctp/sm_statefuns.c:1034
 sctp_do_sm+0x2b4/0x9760 net/sctp/sm_sideeffect.c:1157
 sctp_generate_heartbeat_event+0x3c6/0x5a0 net/sctp/sm_sideeffect.c:391
 call_timer_fn+0x232/0x530 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers+0xd60/0x1270 kernel/time/timer.c:1773
 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1786
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline]
 kmsan_internal_chain_origin+0xc5/0x140 mm/kmsan/kmsan.c:310
 kmsan_memcpy_memmove_metadata+0x25c/0x2e0 mm/kmsan/kmsan.c:247
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:267
 __msan_memcpy+0x44/0x50 mm/kmsan/kmsan_instr.c:116
 sctp_make_heartbeat+0x3f7/0x700 net/sctp/sm_make_chunk.c:1156
 sctp_sf_heartbeat net/sctp/sm_statefuns.c:990 [inline]
 sctp_sf_sendbeat_8_3+0x18d/0xb10 net/sctp/sm_statefuns.c:1034
 sctp_do_sm+0x2b4/0x9760 net/sctp/sm_sideeffect.c:1157
 sctp_generate_heartbeat_event+0x3c6/0x5a0 net/sctp/sm_sideeffect.c:391
 call_timer_fn+0x232/0x530 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers+0xd60/0x1270 kernel/time/timer.c:1773
 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1786
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline]
 kmsan_internal_chain_origin+0xc5/0x140 mm/kmsan/kmsan.c:310
 kmsan_memcpy_memmove_metadata+0x25c/0x2e0 mm/kmsan/kmsan.c:247
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:267
 __msan_memcpy+0x44/0x50 mm/kmsan/kmsan_instr.c:116
 sctp_transport_init net/sctp/transport.c:47 [inline]
 sctp_transport_new+0x248/0xa20 net/sctp/transport.c:100
 sctp_assoc_add_peer+0x5ba/0x2120 net/sctp/associola.c:617
 sctp_process_param net/sctp/sm_make_chunk.c:2524 [inline]
 sctp_process_init+0x162b/0x3e30 net/sctp/sm_make_chunk.c:2345
 sctp_cmd_process_init net/sctp/sm_sideeffect.c:672 [inline]
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1379 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1189 [inline]
 sctp_do_sm+0x1a59/0x9760 net/sctp/sm_sideeffect.c:1160
 sctp_assoc_bh_rcv+0x9ef/0xdb0 net/sctp/associola.c:1045
 sctp_inq_push+0x300/0x420 net/sctp/inqueue.c:80
 sctp_rcv+0x4ba4/0x54b0 net/sctp/input.c:256
 sctp6_rcv+0x41/0x70 net/sctp/ipv6.c:1049
 ip6_protocol_deliver_rcu+0x181c/0x22a0 net/ipv6/ip6_input.c:432
 ip6_input_finish net/ipv6/ip6_input.c:473 [inline]
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip6_input+0x2af/0x340 net/ipv6/ip6_input.c:482
 dst_input include/net/dst.h:442 [inline]
 ip6_rcv_finish net/ipv6/ip6_input.c:76 [inline]
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ipv6_rcv+0x683/0x710 net/ipv6/ip6_input.c:306
 __netif_receive_skb_one_core net/core/dev.c:5150 [inline]
 __netif_receive_skb net/core/dev.c:5264 [inline]
 process_backlog+0x711/0x13c0 net/core/dev.c:6095
 napi_poll net/core/dev.c:6532 [inline]
 net_rx_action+0x7a6/0x1aa0 net/core/dev.c:6600
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293

Local variable ----addr.i@sctp_process_init created at:
 sctp_process_param net/sctp/sm_make_chunk.c:2495 [inline]
 sctp_process_init+0x603/0x3e30 net/sctp/sm_make_chunk.c:2345
 sctp_process_param net/sctp/sm_make_chunk.c:2495 [inline]
 sctp_process_init+0x603/0x3e30 net/sctp/sm_make_chunk.c:2345
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