syzbot


KMSAN: uninit-value in io_req_cqe_overflow (2)

Status: closed as dup on 2024/05/30 20:10
Subsystems: io-uring
[Documentation on labels]
Reported-by: syzbot+97d8b31fbab9db1efe55@syzkaller.appspotmail.com
First crash: 38d, last: 11d
Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
KMSAN: uninit-value in io_issue_sqe io-uring 2 12d 25d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [io-uring?] KMSAN: uninit-value in io_req_cqe_overflow (2) 1 (2) 2024/05/30 20:10
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in io_req_cqe_overflow (3) io-uring C 16 7d21h 8d13h 0/27 upstream: reported C repro on 2024/06/13 19:38
upstream KMSAN: uninit-value in io_req_cqe_overflow io-uring C 622 295d 654d 0/27 auto-obsoleted due to no activity on 2023/11/10 01:07

Sample crash report:
=====================================================
BUG: KMSAN: uninit-value in io_req_cqe_overflow+0x193/0x1c0 io_uring/io_uring.c:810
 io_req_cqe_overflow+0x193/0x1c0 io_uring/io_uring.c:810
 __io_submit_flush_completions+0x7eb/0x1be0 io_uring/io_uring.c:1464
 io_submit_flush_completions io_uring/io_uring.h:148 [inline]
 io_submit_state_end io_uring/io_uring.c:2234 [inline]
 io_submit_sqes+0x2b30/0x2f10 io_uring/io_uring.c:2350
 __do_sys_io_uring_enter io_uring/io_uring.c:3246 [inline]
 __se_sys_io_uring_enter+0x40f/0x3c80 io_uring/io_uring.c:3183
 __x64_sys_io_uring_enter+0x11f/0x1a0 io_uring/io_uring.c:3183
 x64_sys_call+0x2c0/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:427
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 io_req_set_res io_uring/io_uring.h:215 [inline]
 io_recv_finish+0xf10/0x1560 io_uring/net.c:861
 io_recv+0x12ec/0x1ea0 io_uring/net.c:1175
 io_issue_sqe+0x429/0x22c0 io_uring/io_uring.c:1751
 io_queue_sqe io_uring/io_uring.c:1965 [inline]
 io_submit_sqe io_uring/io_uring.c:2220 [inline]
 io_submit_sqes+0x1266/0x2f10 io_uring/io_uring.c:2335
 __do_sys_io_uring_enter io_uring/io_uring.c:3246 [inline]
 __se_sys_io_uring_enter+0x40f/0x3c80 io_uring/io_uring.c:3183
 __x64_sys_io_uring_enter+0x11f/0x1a0 io_uring/io_uring.c:3183
 x64_sys_call+0x2c0/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:427
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:3877 [inline]
 slab_alloc_node mm/slub.c:3918 [inline]
 __do_kmalloc_node mm/slub.c:4038 [inline]
 __kmalloc+0x6e4/0x1060 mm/slub.c:4052
 kmalloc include/linux/slab.h:632 [inline]
 io_alloc_async_data+0xc0/0x220 io_uring/io_uring.c:1662
 io_msg_alloc_async io_uring/net.c:166 [inline]
 io_recvmsg_prep_setup io_uring/net.c:725 [inline]
 io_recvmsg_prep+0xbe8/0x1a20 io_uring/net.c:806
 io_init_req io_uring/io_uring.c:2135 [inline]
 io_submit_sqe io_uring/io_uring.c:2182 [inline]
 io_submit_sqes+0x1135/0x2f10 io_uring/io_uring.c:2335
 __do_sys_io_uring_enter io_uring/io_uring.c:3246 [inline]
 __se_sys_io_uring_enter+0x40f/0x3c80 io_uring/io_uring.c:3183
 __x64_sys_io_uring_enter+0x11f/0x1a0 io_uring/io_uring.c:3183
 x64_sys_call+0x2c0/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:427
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 PID: 5042 Comm: syz-executor135 Not tainted 6.9.0-syzkaller-01768-ga5131c3fdf26 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
=====================================================

Crashes (48):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/14 19:08 upstream a5131c3fdf26 fdb4c10c .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/06/10 21:47 upstream 614da38e2f7a 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/06/10 03:35 upstream 614da38e2f7a 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/06/10 03:34 upstream 614da38e2f7a 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/06/10 01:10 upstream 614da38e2f7a 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/06/10 01:10 upstream 614da38e2f7a 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/06/03 19:47 upstream 614da38e2f7a 0aba2352 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/06/03 19:46 upstream 614da38e2f7a 0aba2352 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/24 07:22 upstream 614da38e2f7a 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/24 07:22 upstream 614da38e2f7a 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/24 07:07 upstream 614da38e2f7a 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/24 07:07 upstream 614da38e2f7a 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/20 02:32 upstream 614da38e2f7a c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/20 02:32 upstream 614da38e2f7a c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/18 16:52 upstream 614da38e2f7a c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/18 16:52 upstream 614da38e2f7a c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/18 16:52 upstream 614da38e2f7a c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/17 07:17 upstream 614da38e2f7a c2e07261 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/17 07:16 upstream 614da38e2f7a c2e07261 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/16 00:21 upstream 614da38e2f7a 0b3dad46 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/15 23:57 upstream 614da38e2f7a 0b3dad46 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/14 15:12 upstream a5131c3fdf26 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/14 15:12 upstream a5131c3fdf26 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/14 14:46 upstream a5131c3fdf26 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/14 14:25 upstream a5131c3fdf26 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/14 14:21 upstream a5131c3fdf26 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/14 14:10 upstream a5131c3fdf26 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/14 11:00 upstream a5131c3fdf26 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in io_req_cqe_overflow
2024/06/11 01:56 upstream 101b7a97143a 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/06/10 07:59 upstream 101b7a97143a 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/06/10 05:27 upstream 101b7a97143a 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/06/04 00:54 upstream 101b7a97143a 0aba2352 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/06/04 00:52 upstream 101b7a97143a 0aba2352 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/24 09:50 upstream 101b7a97143a 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/24 09:50 upstream 101b7a97143a 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/24 09:45 upstream 101b7a97143a 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/24 09:45 upstream 101b7a97143a 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/20 02:47 upstream 101b7a97143a c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/19 06:00 upstream 101b7a97143a c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/19 06:00 upstream 101b7a97143a c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/14 17:44 upstream a5131c3fdf26 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/14 16:54 upstream a5131c3fdf26 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/14 16:31 upstream a5131c3fdf26 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
2024/05/14 15:32 upstream a5131c3fdf26 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in io_req_cqe_overflow
* Struck through repros no longer work on HEAD.