syzbot

 sign-in | mailing list | source | docs
🐞 Open [1034] ≡ Subsystems 🐞 Fixed [5279] 🐞 Invalid [12607] ⬇ Missing Backports [87] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes 💬 Send us feedback

KMSAN: uninit-value in update_stack_state (4)

Status: auto-obsoleted due to no activity on 2022/12/10 23:36
Subsystems: rds
[Documentation on labels]
First crash: 1388d, last: 1332d
▶ ▼ Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in update_stack_state (2) kernel 2 1984d 1984d 0/26 auto-closed as invalid on 2019/06/02 23:19
upstream KMSAN: uninit-value in update_stack_state fs C 103 2211d 2225d 0/26 closed as invalid on 2018/06/27 15:08
upstream KMSAN: uninit-value in update_stack_state (3) kernel C 132 1388d 1393d 0/26 closed as invalid on 2020/07/22 14:22
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2022/12/10 22:31 19m retest repro https://github.com/google/kmsan.git master OK log
2022/12/10 19:31 19m retest repro https://github.com/google/kmsan.git master OK log
2022/12/10 10:31 20m retest repro https://github.com/google/kmsan.git master OK log
2022/12/10 09:31 20m retest repro https://github.com/google/kmsan.git master OK log
2022/12/10 07:31 22m retest repro https://github.com/google/kmsan.git master OK log
2022/12/10 00:31 22m retest repro https://github.com/google/kmsan.git master OK log
2022/12/09 20:31 22m retest repro https://github.com/google/kmsan.git master OK log
2022/12/09 18:31 22m retest repro https://github.com/google/kmsan.git master OK log
2022/12/09 16:31 22m retest repro https://github.com/google/kmsan.git master OK log
2022/09/16 15:29 20m retest repro https://github.com/google/kmsan.git master OK log

Sample crash report:
=====================================================
BUG: KMSAN: uninit-value in update_stack_state+0x974/0xb40 arch/x86/kernel/unwind_frame.c:238
CPU: 1 PID: 9922 Comm: syz-executor243 Not tainted 5.8.0-rc5-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+0x1df/0x240 lib/dump_stack.c:118
 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121
 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215
 update_stack_state+0x974/0xb40 arch/x86/kernel/unwind_frame.c:238
 unwind_next_frame+0x8c6/0xed0 arch/x86/kernel/unwind_frame.c:305
 arch_stack_walk+0x33e/0x3e0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x117/0x1a0 kernel/stacktrace.c:123
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline]
 kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:310
 kmsan_memcpy_memmove_metadata+0x272/0x2e0 mm/kmsan/kmsan.c:247
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:267
 __msan_memcpy+0x43/0x50 mm/kmsan/kmsan_instr.c:116
 pskb_carve_inside_nonlinear net/core/skbuff.c:5956 [inline]
 pskb_carve+0x801/0x2b20 net/core/skbuff.c:6024
 pskb_extract+0x102/0x420 net/core/skbuff.c:6038
 rds_tcp_data_recv+0x8ba/0x1670 net/rds/tcp_recv.c:218
 tcp_read_sock+0x838/0x2350 net/ipv4/tcp.c:1646
 rds_tcp_read_sock net/rds/tcp_recv.c:276 [inline]
 rds_tcp_data_ready+0x2b3/0x680 net/rds/tcp_recv.c:325
 tcp_data_ready net/ipv4/tcp_input.c:4795 [inline]
 tcp_rcv_established+0x2dca/0x3280 net/ipv4/tcp_input.c:5724
 tcp_v6_do_rcv+0x89c/0x1d00 net/ipv6/tcp_ipv6.c:1449
 tcp_v6_rcv+0x444c/0x4cb0 net/ipv6/tcp_ipv6.c:1682
 ip6_protocol_deliver_rcu+0x13c3/0x22c0 net/ipv6/ip6_input.c:433
 ip6_input_finish net/ipv6/ip6_input.c:474 [inline]
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ip6_input+0x2af/0x340 net/ipv6/ip6_input.c:483
 dst_input include/net/dst.h:449 [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:307
 __netif_receive_skb_one_core net/core/dev.c:5281 [inline]
 __netif_receive_skb net/core/dev.c:5395 [inline]
 process_backlog+0x72c/0x14e0 net/core/dev.c:6239
 napi_poll net/core/dev.c:6684 [inline]
 net_rx_action+0x746/0x1aa0 net/core/dev.c:6752
 __do_softirq+0x311/0x83d kernel/softirq.c:293
 asm_call_on_stack+0x12/0x20 arch/x86/entry/entry_64.S:711
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:23 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:50 [inline]
 do_softirq_own_stack+0x7c/0xa0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:390 [inline]
 __irq_exit_rcu+0x226/0x270 kernel/softirq.c:420
 irq_exit_rcu+0xe/0x10 kernel/softirq.c:432
 sysvec_call_function_single+0x107/0x130 arch/x86/kernel/smp.c:243
 asm_sysvec_call_function_single+0x12/0x20 arch/x86/include/asm/idtentry.h:601
RIP: 0010:finish_lock_switch+0x2b/0x40 kernel/sched/core.c:3198
Code: 48 89 e5 53 48 89 fb e8 23 d2 a6 00 8b b8 88 0c 00 00 48 8b 00 48 85 c0 75 12 48 89 df e8 ad cb a6 00 c6 00 00 c6 03 00 fb 5b <5d> c3 e8 5e d1 a6 00 eb e7 66 90 66 2e 0f 1f 84 00 00 00 00 00 55
RSP: 0018:ffffb19b8269bc78 EFLAGS: 00000286
RAX: ffff88b29fdb41c0 RBX: ffff88b134843d00 RCX: 0000000000a9f169
RDX: ffff88b29fd151c0 RSI: 00000000000004a0 RDI: ffff88b1afd941c0
RBP: ffffb19b8269bc78 R08: fffffc970000000f R09: ffff88b1afffb000
R10: ffff88b1325d3000 R11: 0000000000000000 R12: ffff88b1a52ddb80
R13: ffff88b1348446d8 R14: ffff88b1a52ddb80 R15: ffff88b1afd941c0
 finish_task_switch+0xd4/0x2f0 kernel/sched/core.c:3303
 context_switch kernel/sched/core.c:3467 [inline]
 __schedule+0x752/0x840 kernel/sched/core.c:4195
 schedule+0x260/0x330 kernel/sched/core.c:4270
 freezable_schedule include/linux/freezer.h:172 [inline]
 do_nanosleep+0x244/0x940 kernel/time/hrtimer.c:1879
 hrtimer_nanosleep kernel/time/hrtimer.c:1932 [inline]
 __do_sys_nanosleep kernel/time/hrtimer.c:1966 [inline]
 __se_sys_nanosleep+0x53c/0x760 kernel/time/hrtimer.c:1953
 __x64_sys_nanosleep+0x3e/0x60 kernel/time/hrtimer.c:1953
 do_syscall_64+0xb0/0x150 arch/x86/entry/common.c:386
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x449631
Code: Bad RIP value.
RSP: 002b:00007ffc676f7280 EFLAGS: 00000293 ORIG_RAX: 0000000000000023
RAX: ffffffffffffffda RBX: 000000000000004f RCX: 0000000000449631
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffc676f7290
RBP: 00000000006e7a2c R08: 00000000004b3a4f R09: 00000000004b3a4f
R10: 00000000004b3a4f R11: 0000000000000293 R12: 00000000006e7a30
R13: 0000000000000002 R14: 000000000000002d R15: 20c49ba5e353f7cf

Local variable ----filename@ima_file_mprotect created at:
 ima_file_mprotect+0x89/0x5c0 security/integrity/ima/ima_main.c:412
 ima_file_mprotect+0x89/0x5c0 security/integrity/ima/ima_main.c:412
=====================================================

Crashes (1927):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/07/22 20:13 https://github.com/google/kmsan.git master 93f54a72361a 128cd85f .config console log report syz C ci-upstream-kmsan-gce
2020/08/07 06:03 https://github.com/google/kmsan.git master 93f54a72361a 1f122f88 .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/07 01:56 https://github.com/google/kmsan.git master 93f54a72361a 1f122f88 .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/06 11:12 https://github.com/google/kmsan.git master 93f54a72361a 0487ea6f .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/04 21:57 https://github.com/google/kmsan.git master 93f54a72361a 80a06902 .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/03 15:43 https://github.com/google/kmsan.git master 93f54a72361a 196277c4 .config console log report syz C ci-upstream-kmsan-gce-386
2020/08/30 11:56 https://github.com/google/kmsan.git master 3b3ea6028136 d5a3ae1f .config console log report syz ci-upstream-kmsan-gce
2020/08/24 03:46 https://github.com/google/kmsan.git master ce8056d1f79e cef5ae68 .config console log report syz ci-upstream-kmsan-gce
2020/08/17 14:32 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz ci-upstream-kmsan-gce-386
2020/08/17 00:14 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz ci-upstream-kmsan-gce-386
2020/08/16 17:39 https://github.com/google/kmsan.git master ce8056d1f79e 424dd8e7 .config console log report syz ci-upstream-kmsan-gce-386
2020/08/01 16:25 https://github.com/google/kmsan.git master 93f54a72361a d895b3be .config console log report syz ci-upstream-kmsan-gce-386
2020/09/16 18:28 https://github.com/google/kmsan.git master 6c24608b4b24 18d7d030 .config console log report info ci-upstream-kmsan-gce
2020/09/16 14:44 https://github.com/google/kmsan.git master 6c24608b4b24 18d7d030 .config console log report info ci-upstream-kmsan-gce
2020/09/16 13:26 https://github.com/google/kmsan.git master 3b3ea6028136 18d7d030 .config console log report info ci-upstream-kmsan-gce
2020/09/16 11:31 https://github.com/google/kmsan.git master 3b3ea6028136 18d7d030 .config console log report info ci-upstream-kmsan-gce
2020/09/16 10:09 https://github.com/google/kmsan.git master 3b3ea6028136 18d7d030 .config console log report info ci-upstream-kmsan-gce
2020/09/16 08:49 https://github.com/google/kmsan.git master 3b3ea6028136 18d7d030 .config console log report info ci-upstream-kmsan-gce
2020/09/16 07:27 https://github.com/google/kmsan.git master 3b3ea6028136 18d7d030 .config console log report info ci-upstream-kmsan-gce
2020/09/15 18:26 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce
2020/09/15 17:25 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce
2020/09/15 13:31 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce
2020/09/15 10:54 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce
2020/09/15 09:20 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce
2020/09/14 08:55 https://github.com/google/kmsan.git master 3b3ea6028136 2d3cdd63 .config console log report ci-upstream-kmsan-gce
2020/09/14 04:25 https://github.com/google/kmsan.git master 3b3ea6028136 2d3cdd63 .config console log report ci-upstream-kmsan-gce
2020/09/14 04:03 https://github.com/google/kmsan.git master 3b3ea6028136 2d3cdd63 .config console log report ci-upstream-kmsan-gce
2020/09/14 02:14 https://github.com/google/kmsan.git master 3b3ea6028136 2d3cdd63 .config console log report ci-upstream-kmsan-gce
2020/09/13 21:28 https://github.com/google/kmsan.git master 3b3ea6028136 2d3cdd63 .config console log report ci-upstream-kmsan-gce
2020/09/13 20:25 https://github.com/google/kmsan.git master 3b3ea6028136 2d3cdd63 .config console log report ci-upstream-kmsan-gce
2020/09/16 21:07 https://github.com/google/kmsan.git master 6c24608b4b24 18d7d030 .config console log report info ci-upstream-kmsan-gce-386
2020/09/16 19:50 https://github.com/google/kmsan.git master 6c24608b4b24 18d7d030 .config console log report info ci-upstream-kmsan-gce-386
2020/09/16 19:32 https://github.com/google/kmsan.git master 6c24608b4b24 18d7d030 .config console log report info ci-upstream-kmsan-gce-386
2020/09/16 17:15 https://github.com/google/kmsan.git master 6c24608b4b24 18d7d030 .config console log report info ci-upstream-kmsan-gce-386
2020/09/16 16:04 https://github.com/google/kmsan.git master 6c24608b4b24 18d7d030 .config console log report info ci-upstream-kmsan-gce-386
2020/09/16 12:51 https://github.com/google/kmsan.git master 3b3ea6028136 18d7d030 .config console log report info ci-upstream-kmsan-gce-386
2020/09/16 04:43 https://github.com/google/kmsan.git master 3b3ea6028136 18d7d030 .config console log report info ci-upstream-kmsan-gce-386
2020/09/16 03:40 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce-386
2020/09/16 01:31 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce-386
2020/09/16 00:04 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce-386
2020/09/15 23:02 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce-386
2020/09/15 21:18 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce-386
2020/09/15 19:54 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce-386
2020/09/15 15:28 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce-386
2020/09/15 14:36 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce-386
2020/09/15 12:23 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce-386
2020/09/15 09:47 https://github.com/google/kmsan.git master 3b3ea6028136 6989d6f6 .config console log report info ci-upstream-kmsan-gce-386
2020/09/14 11:10 https://github.com/google/kmsan.git master 3b3ea6028136 2d3cdd63 .config console log report ci-upstream-kmsan-gce-386
2020/09/14 10:02 https://github.com/google/kmsan.git master 3b3ea6028136 2d3cdd63 .config console log report ci-upstream-kmsan-gce-386
2020/09/14 07:44 https://github.com/google/kmsan.git master 3b3ea6028136 2d3cdd63 .config console log report ci-upstream-kmsan-gce-386
2020/09/14 05:29 https://github.com/google/kmsan.git master 3b3ea6028136 2d3cdd63 .config console log report ci-upstream-kmsan-gce-386
2020/09/14 00:32 https://github.com/google/kmsan.git master 3b3ea6028136 2d3cdd63 .config console log report ci-upstream-kmsan-gce-386
2020/09/13 23:07 https://github.com/google/kmsan.git master 3b3ea6028136 2d3cdd63 .config console log report ci-upstream-kmsan-gce-386
2020/09/13 04:23 https://github.com/google/kmsan.git master 3b3ea6028136 ce441f06 .config console log report ci-upstream-kmsan-gce-386
2020/09/13 02:58 https://github.com/google/kmsan.git master 3b3ea6028136 ce441f06 .config console log report ci-upstream-kmsan-gce-386
2020/07/22 14:24 https://github.com/google/kmsan.git master 91e18444d6b0 128cd85f .config console log report ci-upstream-kmsan-gce-386
* Struck through repros no longer work on HEAD.