pkg/report: skip kmem_cache_* in reports

3 files changed, 39 insertions, 4 deletions

diff --git a/pkg/report/linux.go b/pkg/report/linux.go
index de3c7c18f..e3003439d 100644
--- a/pkg/report/linux.go
+++ b/pkg/report/linux.go
@@ -766,6 +766,8 @@ var linuxStackParams = &stackParams{
 		"kcalloc",
 		"kzalloc",
 		"krealloc",
+		"kmem_cache",
+		"slab_",
 		"debug_object",
 		"timer_is_static_object",
 		"work_is_static_object",
@@ -983,7 +985,7 @@ var linuxOopses = append([]*oops{
 						linuxCallTrace,
 						parseStackTrace,
 					},
-					skip: []string{"kmem_", "slab_", "kfree", "vunmap", "vfree"},
+					skip: []string{"slab_", "kfree", "vunmap", "vfree"},
 				},
 			},
 			{
@@ -1277,7 +1279,7 @@ var linuxOopses = append([]*oops{
 				fmt:   "WARNING: ODEBUG bug in %[1]v",
 				// Skip all users of ODEBUG as well.
 				stack: warningStackFmt("debug_", "rcu", "hrtimer_", "timer_",
-					"work_", "percpu_", "kmem_", "slab_", "kfree", "vunmap",
+					"work_", "percpu_", "vunmap",
 					"vfree", "__free_", "debug_check", "kobject_"),
 			},
 			{
diff --git a/pkg/report/testdata/linux/report/493 b/pkg/report/testdata/linux/report/493
index 7173c601f..8c946d8b4 100644
--- a/pkg/report/testdata/linux/report/493
+++ b/pkg/report/testdata/linux/report/493
@@ -1,5 +1,5 @@
-TITLE: INFO: rcu detected stall in kmem_cache_alloc
-ALT: stall in kmem_cache_alloc
+TITLE: INFO: rcu detected stall in __do_softirq
+ALT: stall in __do_softirq
 TYPE: HANG
 
 [ 3024.981314] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
diff --git a/pkg/report/testdata/linux/report/608 b/pkg/report/testdata/linux/report/608
new file mode 100644
index 000000000..d2e2f3b2d
--- /dev/null
+++ b/pkg/report/testdata/linux/report/608
@@ -0,0 +1,33 @@
+TITLE: BUG: sleeping function called from invalid context in __alloc_skb
+
+[  566.230190][T22160] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:201
+[  566.293770][T22160] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 22160, name: syz-executor.1
+[  566.359350][T22160] 1 lock held by syz-executor.1/22160:
+[  566.389164][T22160]  #0: ffffffff8bf797a0 (rcu_read_lock){....}-{1:2}, at: nfnetlink_rcv_msg+0x1da/0x1300
+[  566.479571][T22160] Preemption disabled at:
+[  566.479589][T22160] [<ffffffff8709e980>] __dev_queue_xmit+0x1f0/0x2e30
+[  566.534726][T22160] CPU: 1 PID: 22160 Comm: syz-executor.1 Not tainted 5.12.0-next-20210504-syzkaller #0
+[  566.544420][T22160] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
+[  566.554585][T22160] Call Trace:
+[  566.557997][T22160]  dump_stack+0x141/0x1d7
+[  566.567572][T22160]  ___might_sleep.cold+0x1f1/0x237
+[  566.572746][T22160]  kmem_cache_alloc_node+0x33d/0x3e0
+[  566.583028][T22160]  __alloc_skb+0x20b/0x340
+[  566.587492][T22160]  netlink_ack+0x1ed/0xaa0
+[  566.618120][T22160]  netlink_rcv_skb+0x33d/0x420
+[  566.644170][T22160]  nfnetlink_rcv+0x1ac/0x420
+[  566.654259][T22160]  netlink_unicast+0x533/0x7d0
+[  566.692979][T22160]  netlink_sendmsg+0x856/0xd90
+[  566.713975][T22160]  sock_sendmsg+0xcf/0x120
+[  566.744144][T22160]  ___sys_sendmsg+0xf3/0x170
+[  566.779537][T22160]  __sys_sendmsg+0xe5/0x1b0
+[  566.795245][T22160]  do_syscall_64+0x3a/0xb0
+[  566.799717][T22160]  entry_SYSCALL_64_after_hwframe+0x44/0xae
+[  566.805676][T22160] RIP: 0033:0x4665f9
+[  566.809601][T22160] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
+[  566.829223][T22160] RSP: 002b:00007f8d9ab80188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
+[  566.838086][T22160] RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9
+[  566.846088][T22160] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003
+[  566.854326][T22160] RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000
+[  566.862306][T22160] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
+[  566.870283][T22160] R13: 00007ffd6b4c50bf R14: 00007f8d9ab80300 R15: 0000000000022000