pkg/report: improve KMEMLEAK report parsing

Skip few more common allocation functions.

4 files changed, 95 insertions, 0 deletions

diff --git a/pkg/report/testdata/linux/report/309 b/pkg/report/testdata/linux/report/309
new file mode 100644
index 000000000..5f8479019
--- /dev/null
+++ b/pkg/report/testdata/linux/report/309
@@ -0,0 +1,25 @@
+TITLE: memory leak in sget
+
+BUG: memory leak
+unreferenced object 0xffff88006b006340 (size 32):
+  comm "swapper/0", pid 1, jiffies 4294937368 (age 128.520s)
+  hex dump (first 32 bytes):
+    00 77 fb 5f 00 88 ff ff a0 56 a7 81 ff ff ff ff  .w._.....V......
+    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
+  backtrace:
+    [<000000005cb5aa0e>] kmem_cache_alloc_node_trace+0x1d3/0x3f0
+    [<0000000074d33dbd>] __kmalloc_node+0x33/0x70
+    [<00000000c8234a88>] kvmalloc_node+0x38/0xc0
+    [<00000000abadf90a>] __list_lru_init+0x572/0x800
+    [<000000001da18740>] sget_userns+0x91e/0xe70
+    [<00000000494d4fe2>] sget+0xd2/0x120
+    [<0000000096a3fef4>] mount_single+0x3e/0x160
+    [<00000000d0b401b6>] debug_mount+0x2c/0x40
+    [<0000000041554630>] mount_fs+0x6b/0x2d0
+    [<00000000603d2f69>] vfs_kern_mount.part.27+0xcc/0x4b0
+    [<000000006c791ccb>] vfs_kern_mount+0x40/0x60
+    [<0000000058f3812e>] simple_pin_fs+0xec/0x180
+    [<000000002917b386>] start_creating+0x51/0x1f0
+    [<00000000f9f78446>] debugfs_create_dir+0x23/0x3b0
+    [<0000000011348831>] component_debug_init+0x17/0x22
+    [<000000002365a896>] do_one_initcall+0x11a/0x7ae
diff --git a/pkg/report/testdata/linux/report/310 b/pkg/report/testdata/linux/report/310
new file mode 100644
index 000000000..c84eac981
--- /dev/null
+++ b/pkg/report/testdata/linux/report/310
@@ -0,0 +1,25 @@
+TITLE: memory leak in __kernfs_new_node
+
+BUG: memory leak
+unreferenced object 0xffff88005a065340 (size 576):
+  comm "syz-executor1", pid 8262, jiffies 4294976807 (age 33.830s)
+  hex dump (first 32 bytes):
+    00 2c 00 00 00 00 00 00 40 33 35 5a 00 88 ff ff  .,......@35Z....
+    90 5b 81 6b 00 88 ff ff 58 53 06 5a 00 88 ff ff  .[.k....XS.Z....
+  backtrace:
+    [<000000008beb86da>] kmem_cache_alloc+0x1bb/0x3d0
+    [<0000000063949181>] radix_tree_node_alloc.constprop.16+0x1b4/0x330
+    [<0000000039ade84e>] idr_get_free+0x88d/0xe40
+    [<0000000085e044c9>] idr_alloc_u32+0x1bc/0x3d0
+    [<0000000000759b30>] idr_alloc_cyclic+0x13c/0x2f0
+    [<000000009768e365>] __kernfs_new_node+0x1cd/0x8f0
+    [<000000009a4a314c>] kernfs_new_node+0x95/0x120
+    [<000000003c9dee50>] __kernfs_create_file+0x5a/0x340
+    [<00000000aca96e67>] sysfs_add_file_mode_ns+0x225/0x4e0
+    [<000000000b5e0beb>] internal_create_group+0x3a0/0xd30
+    [<00000000c99804fb>] sysfs_create_groups+0x97/0x140
+    [<00000000d826272f>] device_add+0xc32/0x1780
+    [<00000000b0ff2929>] netdev_register_kobject+0x187/0x3e0
+    [<000000003ad8cd45>] register_netdevice+0xaa9/0xf80
+    [<00000000d29a81f6>] __tun_chr_ioctl+0x215c/0x4280
+    [<0000000033cca7c2>] tun_chr_ioctl+0x2a/0x40
diff --git a/pkg/report/testdata/linux/report/311 b/pkg/report/testdata/linux/report/311
new file mode 100644
index 000000000..917f9773a
--- /dev/null
+++ b/pkg/report/testdata/linux/report/311
@@ -0,0 +1,25 @@
+TITLE: memory leak in kobject_set_name_vargs
+
+BUG: memory leak
+unreferenced object 0xffff88005f607a40 (size 32):
+  comm "syz-executor0", pid 6646, jiffies 4294942725 (age 13.180s)
+  hex dump (first 32 bytes):
+    76 62 6f 78 6e 65 74 30 65 74 68 30 2b 2d 00 00  vboxnet0eth0+-..
+    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
+  backtrace:
+    [<000000005040d77c>] __kmalloc_track_caller+0x14b/0x290
+    [<000000009136e0d6>] kstrdup+0x39/0x70
+    [<0000000031b458ae>] kstrdup_const+0x39/0x50
+    [<00000000973ef0d1>] kvasprintf_const+0xb2/0xd0
+    [<000000001526c47f>] kobject_set_name_vargs+0x40/0xd0
+    [<00000000b76f0c51>] kobject_init_and_add+0x6f/0xd0
+    [<00000000f4b13d82>] gfs2_sys_fs_add+0xa1/0x1f0
+    [<00000000b5b99fa9>] fill_super+0x5fd/0xe20
+    [<00000000b47b26c2>] gfs2_mount+0x283/0x2e0
+    [<0000000038cea8a6>] mount_fs+0x4b/0x1a0
+    [<00000000148e0cf2>] vfs_kern_mount.part.25+0x67/0x150
+    [<00000000a8e58e5d>] do_mount+0x72b/0x1100
+    [<00000000cc40e6b2>] ksys_mount+0xab/0x120
+    [<000000004911d907>] __x64_sys_mount+0x26/0x30
+    [<00000000d4b3b027>] do_syscall_64+0x7c/0x180
+    [<000000004c73f7cb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
diff --git a/pkg/report/testdata/linux/report/312 b/pkg/report/testdata/linux/report/312
new file mode 100644
index 000000000..7723ab129
--- /dev/null
+++ b/pkg/report/testdata/linux/report/312
@@ -0,0 +1,20 @@
+TITLE: memory leak in map_create
+
+BUG: memory leak
+unreferenced object 0xffff88005f7ac800 (size 2048):
+  comm "syz-executor0", pid 6839, jiffies 4294947130 (age 39.460s)
+  hex dump (first 32 bytes):
+    00 04 00 00 00 00 00 00 00 04 00 00 00 04 00 00  ................
+    00 00 00 00 00 04 00 00 00 00 00 00 00 04 00 00  ................
+  backtrace:
+    [<00000000996d44e4>] __kmalloc+0x14f/0x2a0
+    [<00000000d3775b57>] pcpu_mem_zalloc+0x6a/0x90
+    [<00000000ba6d0050>] pcpu_create_chunk+0xb6/0x2a0
+    [<000000007b267cc3>] pcpu_alloc+0x7e5/0x8b0
+    [<00000000c6fad5c7>] __alloc_percpu_gfp+0x27/0x30
+    [<00000000f3c9f17c>] htab_map_alloc+0x447/0x5c0
+    [<0000000018bf48ad>] map_create+0x149/0x520
+    [<00000000807bbe88>] __x64_sys_bpf+0x169/0x340
+    [<000000003b6aa314>] do_syscall_64+0x7c/0x180
+    [<0000000021153197>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
+    [<000000005ec5fd9f>] 0xffffffffffffffff