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BUG: KASAN: use-after-free in find_node_in_range syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/uprobes.c:1271 [inline]
BUG: KASAN: use-after-free in build_probe_list syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/uprobes.c:1305 [inline]
BUG: KASAN: use-after-free in uprobe_mmap+0xdbb/0x1080 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/uprobes.c:1382
Read of size 8 at addr ffff888020ee1d68 by task modprobe/9955
CPU: 0 PID: 9955 Comm: modprobe Not tainted 5.11.0-rc6-next-20210205-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/lib/dump_stack.c:79 [inline]
dump_stack+0x107/0x163 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/lib/dump_stack.c:120
print_address_description.constprop.0.cold+0x5b/0x2f8 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/kasan/report.c:232
__kasan_report syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/kasan/report.c:399 [inline]
kasan_report.cold+0x7c/0xd8 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/kasan/report.c:416
find_node_in_range syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/uprobes.c:1271 [inline]
build_probe_list syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/uprobes.c:1305 [inline]
uprobe_mmap+0xdbb/0x1080 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/uprobes.c:1382
mmap_region+0x56c/0x1730 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/mmap.c:1881
do_mmap+0xcff/0x11d0 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/mmap.c:1580
vm_mmap_pgoff+0x1b7/0x290 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/util.c:519
ksys_mmap_pgoff+0x49c/0x620 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/mmap.c:1631
do_syscall_64+0x2d/0x70 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f7b327a130a
Code: 89 f5 41 54 49 89 fc 55 53 74 35 49 63 e8 48 63 da 4d 89 f9 49 89 e8 4d 63 d6 48 89 da 4c 89 ee 4c 89 e7 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 4e 5b 5d 41 5c 41 5d 41 5e 41 5f c3 0f 1f 00
RSP: 002b:00007ffeb2527bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f7b327a130a
RDX: 0000000000000005 RSI: 000000000039e960 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000802 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000039e960 R14: 0000000000000802 R15: 0000000000000000
Allocated by task 9953:
kasan_save_stack+0x1b/0x40 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/kasan/common.c:38
kasan_set_track syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/kasan/common.c:46 [inline]
set_alloc_info syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/kasan/common.c:403 [inline]
____kasan_kmalloc syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/kasan/common.c:434 [inline]
____kasan_kmalloc.constprop.0+0xa0/0xd0 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/kasan/common.c:406
kmalloc syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/./include/linux/slab.h:556 [inline]
kzalloc syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/./include/linux/slab.h:686 [inline]
alloc_uprobe syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/uprobes.c:731 [inline]
__uprobe_register+0x19c/0x850 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/uprobes.c:1167
trace_uprobe_enable syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/trace/trace_uprobe.c:1063 [inline]
probe_event_enable+0x441/0xa00 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/trace/trace_uprobe.c:1129
trace_uprobe_register+0x443/0x880 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/trace/trace_uprobe.c:1456
perf_trace_event_reg syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/trace/trace_event_perf.c:129 [inline]
perf_trace_event_init+0x549/0xa20 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/trace/trace_event_perf.c:204
perf_uprobe_init+0x16f/0x210 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/trace/trace_event_perf.c:336
perf_uprobe_event_init+0xff/0x1c0 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/core.c:9721
perf_try_init_event+0x12a/0x560 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/core.c:11038
perf_init_event syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/core.c:11090 [inline]
perf_event_alloc.part.0+0xe3b/0x3960 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/core.c:11370
perf_event_alloc syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/core.c:11749 [inline]
__do_sys_perf_event_open+0x647/0x2e60 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/core.c:11847
do_syscall_64+0x2d/0x70 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Freed by task 9953:
kasan_save_stack+0x1b/0x40 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/kasan/common.c:38
kasan_set_track+0x1c/0x30 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/kasan/common.c:46
kasan_set_free_info+0x20/0x30 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/kasan/generic.c:357
____kasan_slab_free.part.0+0xe1/0x110 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/kasan/common.c:364
kasan_slab_free syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/./include/linux/kasan.h:191 [inline]
slab_free_hook syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/slub.c:1562 [inline]
slab_free_freelist_hook+0x82/0x1d0 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/slub.c:1600
slab_free syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/slub.c:3161 [inline]
kfree+0xe5/0x7b0 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/mm/slub.c:4202
put_uprobe syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/uprobes.c:612 [inline]
put_uprobe+0x13b/0x190 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/uprobes.c:601
uprobe_apply+0xfc/0x130 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/uprobes.c:1231
uprobe_perf_open syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/trace/trace_uprobe.c:1311 [inline]
trace_uprobe_register+0x5c9/0x880 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/trace/trace_uprobe.c:1463
perf_trace_event_open syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/trace/trace_event_perf.c:186 [inline]
perf_trace_event_init syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/trace/trace_event_perf.c:208 [inline]
perf_trace_event_init+0x17a/0xa20 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/trace/trace_event_perf.c:195
perf_uprobe_init+0x16f/0x210 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/trace/trace_event_perf.c:336
perf_uprobe_event_init+0xff/0x1c0 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/core.c:9721
perf_try_init_event+0x12a/0x560 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/core.c:11038
perf_init_event syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/core.c:11090 [inline]
perf_event_alloc.part.0+0xe3b/0x3960 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/core.c:11370
perf_event_alloc syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/core.c:11749 [inline]
__do_sys_perf_event_open+0x647/0x2e60 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/kernel/events/core.c:11847
do_syscall_64+0x2d/0x70 syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
The buggy address belongs to the object at ffff888020ee1c00
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 360 bytes inside of
512-byte region [ffff888020ee1c00, ffff888020ee1e00)
The buggy address belongs to the page:
page:000000009270b95e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x20ee0
head:000000009270b95e order:1 compound_mapcount:0
flags: 0xfff00000010200(slab|head)
raw: 00fff00000010200 0000000000000000 0000000500000001 ffff888010841c80
raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888020ee1c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888020ee1c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888020ee1d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888020ee1d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888020ee1e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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