From 1e35461e020a8b43c7b2d79ee64eb4068a9f0481 Mon Sep 17 00:00:00 2001 From: Dmitry Vyukov Date: Fri, 8 Nov 2019 07:50:44 +0100 Subject: pkg/report: trim panic_on_warn set few lines earlier The KCSAN reports can be quite short. Now with task contexts we can hopefully reduce the threshold a bit. --- pkg/report/testdata/linux/report/449 | 81 ++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 pkg/report/testdata/linux/report/449 (limited to 'pkg/report/testdata') diff --git a/pkg/report/testdata/linux/report/449 b/pkg/report/testdata/linux/report/449 new file mode 100644 index 000000000..5c4e9fc91 --- /dev/null +++ b/pkg/report/testdata/linux/report/449 @@ -0,0 +1,81 @@ +TITLE: KCSAN: data-race in netlink_recvmsg / netlink_recvmsg +TYPE: DATARACE + +[ 472.478762][T19789] ================================================================== +[ 472.486894][T19789] BUG: KCSAN: data-race in netlink_recvmsg / netlink_recvmsg +[ 472.494249][T19789] +[ 472.496603][T19789] write to 0xffff8880b588efb2 of 2 bytes by task 19788 on cpu 0: +[ 472.504348][T19789] netlink_recvmsg+0x196/0x910 +[ 472.509121][T19789] sock_recvmsg_nosec+0x5c/0x70 +[ 472.513990][T19789] ___sys_recvmsg+0x1a0/0x3e0 +[ 472.518791][T19789] do_recvmmsg+0x19a/0x5c0 +[ 472.523196][T19789] __sys_recvmmsg+0x1ef/0x200 +[ 472.527980][T19789] __x64_sys_recvmmsg+0x89/0xb0 +[ 472.532862][T19789] do_syscall_64+0xcc/0x370 +[ 472.537395][T19789] entry_SYSCALL_64_after_hwframe+0x44/0xa9 +[ 472.543289][T19789] +[ 472.545632][T19789] write to 0xffff8880b588efb2 of 2 bytes by task 19789 on cpu 1: +[ 472.553375][T19789] netlink_recvmsg+0x196/0x910 +[ 472.558178][T19789] sock_recvmsg+0x92/0xb0 +[ 472.562518][T19789] __sys_recvfrom+0x1ae/0x2d0 +[ 472.567200][T19789] __x64_sys_recvfrom+0x89/0xb0 +[ 472.572077][T19789] do_syscall_64+0xcc/0x370 +[ 472.576596][T19789] entry_SYSCALL_64_after_hwframe+0x44/0xa9 +[ 472.582493][T19789] +[ 472.584823][T19789] Reported by Kernel Concurrency Sanitizer on: +[ 472.591100][T19789] CPU: 1 PID: 19789 Comm: syz-executor.0 Not tainted 5.4.0-rc6+ #0 +[ 472.599001][T19789] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 +[ 472.609194][T19789] ================================================================== +[ 472.617280][T19789] Kernel panic - not syncing: panic_on_warn set ... +[ 472.623912][T19789] CPU: 1 PID: 19789 Comm: syz-executor.0 Not tainted 5.4.0-rc6+ #0 +[ 472.631819][T19789] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 +[ 472.641880][T19789] Call Trace: +[ 472.645181][T19789] dump_stack+0xf5/0x159 +[ 472.649446][T19789] panic+0x210/0x640 +[ 472.654132][T19789] ? vprintk_func+0x8d/0x140 +[ 472.658728][T19789] kcsan_report.cold+0xc/0xe +[ 472.663325][T19789] kcsan_setup_watchpoint+0x3fe/0x410 +[ 472.668711][T19789] __tsan_unaligned_write2+0x143/0x1f0 +[ 472.674172][T19789] netlink_recvmsg+0x196/0x910 +[ 472.694611][T19789] sock_recvmsg+0x92/0xb0 +[ 472.698945][T19789] __sys_recvfrom+0x1ae/0x2d0 +[ 472.730069][T19789] __x64_sys_recvfrom+0x89/0xb0 +[ 472.735015][T19789] do_syscall_64+0xcc/0x370 +[ 472.739525][T19789] entry_SYSCALL_64_after_hwframe+0x44/0xa9 +[ 472.745411][T19789] RIP: 0033:0x45a219 +[ 472.749313][T19789] Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 +[ 472.768910][T19789] RSP: 002b:00007f580a978c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002d +[ 472.777579][T19789] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000045a219 +[ 472.785564][T19789] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 +[ 472.794320][T19789] RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 +[ 472.802300][T19789] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f580a9796d4 +[ 472.810544][T19789] R13: 00000000004c7c59 R14: 00000000004ddd80 R15: 00000000ffffffff +[ 472.819997][T19789] Kernel Offset: disabled +[ 472.824338][T19789] Rebooting in 86400 seconds.. + +REPORT: +================================================================== +BUG: KCSAN: data-race in netlink_recvmsg / netlink_recvmsg + +write to 0xffff8880b588efb2 of 2 bytes by task 19788 on cpu 0: + netlink_recvmsg+0x196/0x910 + sock_recvmsg_nosec+0x5c/0x70 + ___sys_recvmsg+0x1a0/0x3e0 + do_recvmmsg+0x19a/0x5c0 + __sys_recvmmsg+0x1ef/0x200 + __x64_sys_recvmmsg+0x89/0xb0 + do_syscall_64+0xcc/0x370 + entry_SYSCALL_64_after_hwframe+0x44/0xa9 + +write to 0xffff8880b588efb2 of 2 bytes by task 19789 on cpu 1: + netlink_recvmsg+0x196/0x910 + sock_recvmsg+0x92/0xb0 + __sys_recvfrom+0x1ae/0x2d0 + __x64_sys_recvfrom+0x89/0xb0 + do_syscall_64+0xcc/0x370 + entry_SYSCALL_64_after_hwframe+0x44/0xa9 + +Reported by Kernel Concurrency Sanitizer on: +CPU: 1 PID: 19789 Comm: syz-executor.0 Not tainted 5.4.0-rc6+ #0 +Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 +================================================================== -- cgit mrf-deployment