KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets (2)

Status: auto-closed as invalid on 2021/05/13 03:09
Subsystems: wireguard
[Documentation on labels]
Reported-by: syzbot+cdfd0c266dd84d19e3fd@syzkaller.appspotmail.com
First crash: 2231d, last: 1939d
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets wireguard 6 15 2235d 2274d 0/29 closed as invalid on 2020/06/18 14:24
upstream KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets (3) wireguard 6 1020 748d 1632d 0/29 auto-obsoleted due to no activity on 2024/08/08 12:48

Sample crash report:
==================================================================
BUG: KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets

write to 0xffff88802325da48 of 4 bytes by interrupt on cpu 1:
 wg_cpumask_next_online drivers/net/wireguard/queueing.h:135 [inline]
 wg_queue_enqueue_per_device_and_peer drivers/net/wireguard/queueing.h:178 [inline]
 wg_packet_create_data drivers/net/wireguard/send.c:320 [inline]
 wg_packet_send_staged_packets+0x436/0x7e0 drivers/net/wireguard/send.c:387
 wg_packet_send_keepalive+0xfc/0x110 drivers/net/wireguard/send.c:239
 wg_expired_send_persistent_keepalive+0x38/0x50 drivers/net/wireguard/timers.c:141
 call_timer_fn+0x2e/0x240 kernel/time/timer.c:1431
 expire_timers+0x116/0x260 kernel/time/timer.c:1476
 __run_timers+0x358/0x3f0 kernel/time/timer.c:1745
 run_timer_softirq+0x19/0x30 kernel/time/timer.c:1758
 __do_softirq+0x13c/0x2c3 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu+0xb4/0xc0 kernel/softirq.c:422
 sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
 native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
 arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
 acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline]
 acpi_idle_do_entry drivers/acpi/processor_idle.c:517 [inline]
 acpi_idle_enter+0x25b/0x2e0 drivers/acpi/processor_idle.c:654
 cpuidle_enter_state+0x2b6/0x7c0 drivers/cpuidle/cpuidle.c:237
 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:351
 call_cpuidle kernel/sched/idle.c:158 [inline]
 cpuidle_idle_call kernel/sched/idle.c:239 [inline]
 do_idle+0x193/0x230 kernel/sched/idle.c:300
 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:397
 secondary_startup_64_no_verify+0xb0/0xbb

read to 0xffff88802325da48 of 4 bytes by interrupt on cpu 0:
 wg_cpumask_next_online drivers/net/wireguard/queueing.h:131 [inline]
 wg_queue_enqueue_per_device_and_peer drivers/net/wireguard/queueing.h:178 [inline]
 wg_packet_create_data drivers/net/wireguard/send.c:320 [inline]
 wg_packet_send_staged_packets+0x3fb/0x7e0 drivers/net/wireguard/send.c:387
 wg_packet_send_keepalive+0xfc/0x110 drivers/net/wireguard/send.c:239
 wg_expired_send_persistent_keepalive+0x38/0x50 drivers/net/wireguard/timers.c:141
 call_timer_fn+0x2e/0x240 kernel/time/timer.c:1431
 expire_timers+0x116/0x260 kernel/time/timer.c:1476
 __run_timers+0x358/0x3f0 kernel/time/timer.c:1745
 run_timer_softirq+0x19/0x30 kernel/time/timer.c:1758
 __do_softirq+0x13c/0x2c3 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu+0xb4/0xc0 kernel/softirq.c:422
 sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
 native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
 arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
 acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline]
 acpi_idle_do_entry drivers/acpi/processor_idle.c:517 [inline]
 acpi_idle_enter+0x25b/0x2e0 drivers/acpi/processor_idle.c:654
 cpuidle_enter_state+0x2b6/0x7c0 drivers/cpuidle/cpuidle.c:237
 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:351
 call_cpuidle kernel/sched/idle.c:158 [inline]
 cpuidle_idle_call kernel/sched/idle.c:239 [inline]
 do_idle+0x193/0x230 kernel/sched/idle.c:300
 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:397
 rest_init+0xd7/0xe0 init/main.c:721
 arch_call_rest_init+0xa/0xb
 start_kernel+0x5a1/0x626 init/main.c:1064
 secondary_startup_64_no_verify+0xb0/0xbb

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W         5.12.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (108):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/04/08 03:09 upstream 3a22981230f9 6a81331a .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/04/06 01:00 upstream 0a50438c8436 6a81331a .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/03/25 13:26 upstream e138138003eb 6a383ecf .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/03/20 18:05 upstream 1c273e10bc0c e45f5621 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/03/11 19:53 upstream 28806e4d9b97 c2ca1f2a .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/03/11 12:10 upstream a74e6a014c9d c2ca1f2a .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/02/13 08:34 upstream dcc0b49040c7 98682e5e .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/02/10 04:43 upstream e0756cfc7d7c 2bd9619f .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/02/04 06:58 upstream 3afe9076a7c1 624dad51 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/02/03 16:33 upstream 3aaf0a27ffc2 624dad51 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/01/29 15:16 upstream bec4c2968fce 6593fd32 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/01/26 05:35 upstream f8ad8187c3b5 52e37319 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/01/25 19:35 upstream 6ee1d745b7c9 52e37319 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/01/25 06:59 upstream e68061375f79 52e37319 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/01/24 02:31 upstream e1ae4b0be158 52e37319 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/01/22 00:04 upstream 9791581c049c d4f4eca5 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/01/17 14:32 upstream 0da0a8a0a0e1 813be542 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in wg_packet_send_staged_packets / wg_packet_send_staged_packets
2021/01/17 07:30 upstream 54c6247d06f1 65a7a854 .config console log report info ci2-upstream-kcsan-gce
2021/01/14 18:37 upstream 65f0d2414b70 468dbb55 .config console log report info ci2-upstream-kcsan-gce
2021/01/12 07:26 upstream a0d54b4f5b21 2c1f2513 .config console log report info ci2-upstream-kcsan-gce
2021/01/09 00:50 upstream 6279d812eab6 c104d4a3 .config console log report info ci2-upstream-kcsan-gce
2021/01/01 23:09 upstream f6e1ea196492 79264ae3 .config console log report info ci2-upstream-kcsan-gce
2020/12/31 08:07 upstream f6e1ea196492 5cc121d6 .config console log report info ci2-upstream-kcsan-gce
2020/12/30 06:14 upstream 139711f033f6 0fa352f2 .config console log report info ci2-upstream-kcsan-gce
2020/12/28 07:33 upstream 5c8fe583cce5 2242f77f .config console log report info ci2-upstream-kcsan-gce
2020/12/21 20:15 upstream e37b12e4bb21 04201c06 .config console log report info ci2-upstream-kcsan-gce
2020/12/21 03:15 upstream 6a447b0e3151 04201c06 .config console log report info ci2-upstream-kcsan-gce
2020/12/16 21:44 upstream 5e60366d56c6 04201c06 .config console log report info ci2-upstream-kcsan-gce
2020/12/08 06:02 upstream cd796ed33450 51a9082e .config console log report info ci2-upstream-kcsan-gce
2020/12/05 06:07 upstream e87297fa080a 20366b87 .config console log report info ci2-upstream-kcsan-gce
2020/11/28 17:22 upstream c84e1efae022 3c7136c0 .config console log report info ci2-upstream-kcsan-gce
2020/11/27 14:36 upstream 85a2c56cb445 486f93ef .config console log report info ci2-upstream-kcsan-gce
2020/11/22 16:54 upstream a349e4c65960 0d27f508 .config console log report info ci2-upstream-kcsan-gce
2020/11/21 01:37 upstream 4d02da974ea8 68068804 .config console log report info ci2-upstream-kcsan-gce
2020/11/19 17:59 upstream c2e7554e1b85 0767f13f .config console log report info ci2-upstream-kcsan-gce
2020/11/18 18:48 upstream 0fa8ee0d9ab9 0767f13f .config console log report info ci2-upstream-kcsan-gce
2020/11/17 01:39 upstream 9c87c9f41245 1bf9a662 .config console log report info ci2-upstream-kcsan-gce
2020/11/16 10:46 upstream 09162bc32c88 1bf9a662 .config console log report info ci2-upstream-kcsan-gce
2020/11/16 04:36 upstream 0062442ecfef 1bf9a662 .config console log report info ci2-upstream-kcsan-gce
2020/11/15 07:40 upstream e28c0d7c92c8 1bf9a662 .config console log report info ci2-upstream-kcsan-gce
2020/11/14 00:41 upstream 9e6a39eae450 1bf9a662 .config console log report info ci2-upstream-kcsan-gce
2020/11/13 17:28 upstream 585e5b17b92d 4a7fa9b4 .config console log report info ci2-upstream-kcsan-gce
2020/11/13 00:16 upstream af5043c89a8e 16fca0c8 .config console log report info ci2-upstream-kcsan-gce
2020/11/11 19:22 upstream eccc87672492 cca87986 .config console log report info ci2-upstream-kcsan-gce
2020/11/10 07:03 upstream 3552c3709c0e cba33199 .config console log report info ci2-upstream-kcsan-gce
2020/11/07 06:12 upstream bf3e76289cd2 cba33199 .config console log report info ci2-upstream-kcsan-gce
2020/11/06 07:17 upstream 521b619acdc8 cba33199 .config console log report info ci2-upstream-kcsan-gce
2020/11/04 19:06 upstream 4ef8451b3326 cba33199 .config console log report info ci2-upstream-kcsan-gce
2020/11/02 16:20 upstream 3cea11cd5e3b 8bc4594f .config console log report info ci2-upstream-kcsan-gce
2020/11/01 01:01 upstream c2dc4c073fb7 8bc4594f .config console log report info ci2-upstream-kcsan-gce
2020/10/23 08:22 upstream 96485e446260 4e740c00 .config console log report info ci2-upstream-kcsan-gce
2020/06/19 19:26 upstream 5e857ce6eae7 123cf502 .config console log report ci2-upstream-kcsan-gce
* Struck through repros no longer work on HEAD.