syzbot


KCSAN: data-race in pollwake / pollwake (4)

Status: auto-obsoleted due to no activity on 2024/05/12 07:09
Subsystems: ext4
[Documentation on labels]
Reported-by: syzbot+0024ce1f784a1428a2d4@syzkaller.appspotmail.com
First crash: 938d, last: 40d
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in pollwake / pollwake (2) fs 2 1580d 1622d 0/26 auto-closed as invalid on 2020/03/29 13:20
upstream KCSAN: data-race in pollwake / pollwake (3) fs 4 1288d 1257d 0/26 auto-closed as invalid on 2020/12/21 11:54
upstream KCSAN: data-race in pollwake / pollwake fs 1 1666d 1666d 0/26 closed as invalid on 2019/11/19 13:44

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

write to 0xffffc90001227be0 of 4 bytes by task 3992 on cpu 1:
 __pollwake fs/select.c:198 [inline]
 pollwake+0xbe/0x110 fs/select.c:218
 __wake_up_common kernel/sched/wait.c:89 [inline]
 __wake_up_common_lock kernel/sched/wait.c:106 [inline]
 __wake_up_sync_key+0x51/0x80 kernel/sched/wait.c:173
 sock_def_readable+0x70/0x1b0 net/core/sock.c:3354
 __netlink_sendskb net/netlink/af_netlink.c:1282 [inline]
 netlink_broadcast_deliver net/netlink/af_netlink.c:1412 [inline]
 do_one_broadcast net/netlink/af_netlink.c:1499 [inline]
 netlink_broadcast_filtered+0x981/0xbe0 net/netlink/af_netlink.c:1544
 netlink_broadcast net/netlink/af_netlink.c:1568 [inline]
 netlink_sendmsg+0x592/0x6e0 net/netlink/af_netlink.c:1903
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x140/0x180 net/socket.c:745
 ____sys_sendmsg+0x312/0x410 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmsg+0x1e9/0x280 net/socket.c:2667
 __do_sys_sendmsg net/socket.c:2676 [inline]
 __se_sys_sendmsg net/socket.c:2674 [inline]
 __x64_sys_sendmsg+0x46/0x50 net/socket.c:2674
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x72/0x7a

write to 0xffffc90001227be0 of 4 bytes by task 2816 on cpu 0:
 __pollwake fs/select.c:198 [inline]
 pollwake+0xbe/0x110 fs/select.c:218
 __wake_up_common kernel/sched/wait.c:89 [inline]
 __wake_up_common_lock kernel/sched/wait.c:106 [inline]
 __wake_up_sync_key+0x51/0x80 kernel/sched/wait.c:173
 sock_def_readable+0x70/0x1b0 net/core/sock.c:3354
 unix_dgram_sendmsg+0xca1/0x1030 net/unix/af_unix.c:2159
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x140/0x180 net/socket.c:745
 sock_write_iter+0x164/0x1b0 net/socket.c:1160
 call_write_iter include/linux/fs.h:2110 [inline]
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0x771/0x8e0 fs/read_write.c:590
 ksys_write+0xeb/0x1b0 fs/read_write.c:643
 __do_sys_write fs/read_write.c:655 [inline]
 __se_sys_write fs/read_write.c:652 [inline]
 __x64_sys_write+0x42/0x50 fs/read_write.c:652
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x72/0x7a

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 2816 Comm: dhcpcd Tainted: G        W          6.9.0-rc2-syzkaller-00413-gf2f80ac80987 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
==================================================================

Crashes (200):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/07 07:08 upstream f2f80ac80987 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/03/24 15:31 upstream 70293240c5ce 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/03/23 03:09 upstream bfa8f18691ed 4b6cdce6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/03/22 17:34 upstream 8e938e398669 4b6cdce6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/03/11 02:44 upstream fa4b851b4ad6 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/03/09 00:50 upstream 10d48d70e82d 8e75c913 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/03/08 11:55 upstream 3aaa8ce7a335 cf82cde1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/03/07 21:45 upstream 135288b73cef 2b789849 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/03/06 07:36 upstream 29cd507cbec2 f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/02/25 03:39 upstream f2e367d6ad3b 8d446f15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/02/19 14:56 upstream b401b621758e 3af7dd65 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/02/14 19:13 upstream 7e90b5c295ec d9b1cdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/02/11 18:48 upstream 7521f258ea30 77b23aa1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/02/09 15:21 upstream 1f719a2f3fa6 7f07e9b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/02/01 22:03 upstream 5c24e4e9e708 81024119 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/01/24 07:24 upstream 615d30064886 1e153dc8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/01/23 22:09 upstream 7ed2632ec7d7 1e153dc8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/01/22 15:16 upstream 6613476e225e 9bd8dcda .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/01/20 23:57 upstream 125514880ddd 9bd8dcda .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/01/13 07:52 upstream 052d534373b7 551587c1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/01/12 07:59 upstream 3e7aeb78ab01 dda5a988 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/01/11 10:28 upstream de927f6c0b07 00f3cc59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/01/11 01:20 upstream ab27740f7665 04815ef1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/01/05 13:13 upstream 1f874787ed9a 28c42cff .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/01/03 15:18 upstream 610a9b8f49fb fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2024/01/01 07:59 upstream 2639772a11c8 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/12/30 03:08 upstream f016f7547aee fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/12/28 07:37 upstream f5837722ffec fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/12/24 02:41 upstream 3f82f1c3a036 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/12/21 23:36 upstream 9a6b294ab496 4f9530a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/12/18 17:44 upstream ceb6a6f023fd 924661f4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/12/09 15:13 upstream f2e8a57ee903 28b24332 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/12/05 15:45 upstream bee0e7762ad2 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/12/02 22:24 upstream 815fb87b7530 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/12/02 00:21 upstream 994d5c58e50e f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/12/01 06:51 upstream e8f60209d6cf f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/11/25 23:45 upstream b46ae77f6787 5b429f39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/11/17 07:10 upstream 7475e51b8796 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/11/13 01:41 upstream b57b17e88bf5 6d6dbf8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/11/12 08:22 upstream 1b907d050735 6d6dbf8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/11/06 01:50 upstream 77fa2fbe87fc 500bfdc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/11/02 09:12 upstream babe393974de 69904c9f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/11/01 03:04 upstream 89ed67ef126c 58499c95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/10/30 12:33 upstream ffc253263a13 b5729d82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/10/29 20:24 upstream 2af9b20dbb39 3c418d72 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/10/27 15:51 upstream 750b95887e56 3c418d72 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/10/19 23:57 upstream 7cf4bea77ab6 42e1d524 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/10/17 14:15 upstream 213f891525c2 342b9c55 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/10/16 21:46 upstream 58720809f527 342b9c55 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/10/15 01:38 upstream 70f8c6f8f880 f757a323 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/10/10 06:35 upstream 94f6f0550c62 c9be5398 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/10/09 11:53 upstream 94f6f0550c62 5e837c76 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2023/10/06 19:15 upstream 7de25c855b63 ea12a918 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
2021/10/22 08:27 upstream 2f111a6fd5b5 55f90bc6 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in pollwake / pollwake
* Struck through repros no longer work on HEAD.