KASAN: slab-use-after-free Write in binder_add_device
==================================================================
BUG: KASAN: slab-use-after-free in hlist_add_head include/linux/list.h:1026 [inline]
BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0 drivers/android/binder.c:6932
Write of size 8 at addr ffff8880299a2c08 by task syz-executor/5849
CPU: 1 UID: 0 PID: 5849 Comm: syz-executor Not tainted 6.13.0-syzkaller-09685-gc2933b2befe2-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0x169/0x550 mm/kasan/report.c:489
kasan_report+0x143/0x180 mm/kasan/report.c:602
hlist_add_head include/linux/list.h:1026 [inline]
binder_add_device+0x5f/0xa0 drivers/android/binder.c:6932
binderfs_binder_device_create+0x7bf/0x9c0 drivers/android/binderfs.c:210
binderfs_fill_super+0x944/0xd90 drivers/android/binderfs.c:729
vfs_get_super fs/super.c:1280 [inline]
get_tree_nodev+0xb7/0x140 fs/super.c:1299
vfs_get_tree+0x90/0x2b0 fs/super.c:1814
do_new_mount+0x2be/0xb40 fs/namespace.c:3560
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f81ec1874ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc3b665678 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f81ec201e6b RCX: 00007f81ec1874ca
RDX: 00007f81ec20ebc7 RSI: 00007f81ec201e6b RDI: 00007f81ec20ebc7
RBP: 00007f81ec202063 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f81ec1e41c8
R13: 00007f81ec1e41a8 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5842:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x243/0x390 mm/slub.c:4325
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
binderfs_binder_device_create+0x16c/0x9c0 drivers/android/binderfs.c:147
binderfs_fill_super+0x944/0xd90 drivers/android/binderfs.c:729
vfs_get_super fs/super.c:1280 [inline]
get_tree_nodev+0xb7/0x140 fs/super.c:1299
vfs_get_tree+0x90/0x2b0 fs/super.c:1814
do_new_mount+0x2be/0xb40 fs/namespace.c:3560
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 5842:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2353 [inline]
slab_free mm/slub.c:4609 [inline]
kfree+0x196/0x430 mm/slub.c:4757
evict+0x4e8/0x9a0 fs/inode.c:796
__dentry_kill+0x20d/0x630 fs/dcache.c:643
shrink_kill+0xa9/0x2c0 fs/dcache.c:1088
shrink_dentry_list+0x2c0/0x5b0 fs/dcache.c:1115
shrink_dcache_parent+0xcb/0x3b0
do_one_tree+0x23/0xe0 fs/dcache.c:1578
shrink_dcache_for_umount+0xb4/0x180 fs/dcache.c:1595
generic_shutdown_super+0x6a/0x2d0 fs/super.c:620
kill_anon_super fs/super.c:1237 [inline]
kill_litter_super+0x76/0xb0 fs/super.c:1247
binderfs_kill_super+0x44/0x90 drivers/android/binderfs.c:791
deactivate_locked_super+0xc4/0x130 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1413
task_work_run+0x24f/0x310 kernel/task_work.c:227
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa2a/0x28e0 kernel/exit.c:938
do_group_exit+0x207/0x2c0 kernel/exit.c:1087
get_signal+0x16b2/0x1750 kernel/signal.c:3036
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
The buggy address belongs to the object at ffff8880299a2c00
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff8880299a2c00, ffff8880299a2e00)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x299a0
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801ac41c80 ffffea0000b64e00 dead000000000002
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801ac41c80 ffffea0000b64e00 dead000000000002
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0000a66801 ffffffffffffffff 0000000000000000
head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5224, tgid 5224 (udevadm), ts 25188743128, free_ts 24819553670
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4739
alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270
alloc_slab_page mm/slub.c:2423 [inline]
allocate_slab+0x8f/0x3a0 mm/slub.c:2587
new_slab mm/slub.c:2640 [inline]
___slab_alloc+0xc27/0x14a0 mm/slub.c:3826
__slab_alloc+0x58/0xa0 mm/slub.c:3916
__slab_alloc_node mm/slub.c:3991 [inline]
slab_alloc_node mm/slub.c:4152 [inline]
__kmalloc_cache_noprof+0x27b/0x390 mm/slub.c:4320
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
kernfs_fop_open+0x3e0/0xd10 fs/kernfs/file.c:623
do_dentry_open+0xdec/0x1960 fs/open.c:955
vfs_open+0x3b/0x370 fs/open.c:1085
do_open fs/namei.c:3830 [inline]
path_openat+0x2c81/0x3590 fs/namei.c:3989
do_filp_open+0x27f/0x4e0 fs/namei.c:4016
do_sys_openat2+0x13e/0x1d0 fs/open.c:1427
do_sys_open fs/open.c:1442 [inline]
__do_sys_openat fs/open.c:1458 [inline]
__se_sys_openat fs/open.c:1453 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1453
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
page last free pid 5222 tgid 5222 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xe0d/0x10e0 mm/page_alloc.c:2660
__slab_free+0x2c2/0x380 mm/slub.c:4520
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4115 [inline]
slab_alloc_node mm/slub.c:4164 [inline]
kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4171
getname_flags+0xb7/0x540 fs/namei.c:139
do_sys_openat2+0xd2/0x1d0 fs/open.c:1421
do_sys_open fs/open.c:1442 [inline]
__do_sys_openat fs/open.c:1458 [inline]
__se_sys_openat fs/open.c:1453 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1453
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Memory state around the buggy address:
ffff8880299a2b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880299a2b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880299a2c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880299a2c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880299a2d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.10.47' (ED25519) to the list of known hosts.
2025/02/03 15:37:53 ignoring optional flag "sandboxArg"="0"
2025/02/03 15:37:54 parsed 1 programs
[ 67.825655][ T5833] cgroup: Unknown subsys name 'net'
[ 67.932700][ T5833] cgroup: Unknown subsys name 'cpuset'
[ 67.940573][ T5833] cgroup: Unknown subsys name 'rlimit'
[ 69.307270][ T5833] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 71.792812][ T5842] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality.
[ 71.833130][ T1296] ieee802154 phy0 wpan0: encryption failed: -22
[ 71.839662][ T1296] ieee802154 phy1 wpan1: encryption failed: -22
[ 72.090577][ T5849] ==================================================================
[ 72.098691][ T5849] BUG: KASAN: slab-use-after-free in binder_add_device+0x5f/0xa0
[ 72.106423][ T5849] Write of size 8 at addr ffff8880299a2c08 by task syz-executor/5849
[ 72.114558][ T5849]
[ 72.116897][ T5849] CPU: 1 UID: 0 PID: 5849 Comm: syz-executor Not tainted 6.13.0-syzkaller-09685-gc2933b2befe2-dirty #0
[ 72.116909][ T5849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 72.116919][ T5849] Call Trace:
[ 72.116925][ T5849]
[ 72.116930][ T5849] dump_stack_lvl+0x241/0x360
[ 72.116945][ T5849] ? __pfx_dump_stack_lvl+0x10/0x10
[ 72.116954][ T5849] ? __pfx__printk+0x10/0x10
[ 72.116964][ T5849] ? _printk+0xd5/0x120
[ 72.116971][ T5849] ? __virt_addr_valid+0x183/0x530
[ 72.116986][ T5849] ? __virt_addr_valid+0x183/0x530
[ 72.117003][ T5849] print_report+0x169/0x550
[ 72.117019][ T5849] ? __virt_addr_valid+0x183/0x530
[ 72.117032][ T5849] ? __virt_addr_valid+0x183/0x530
[ 72.117045][ T5849] ? __virt_addr_valid+0x45f/0x530
[ 72.117058][ T5849] ? __phys_addr+0xba/0x170
[ 72.117072][ T5849] ? binder_add_device+0x5f/0xa0
[ 72.117085][ T5849] kasan_report+0x143/0x180
[ 72.117100][ T5849] ? binder_add_device+0x5f/0xa0
[ 72.117113][ T5849] binder_add_device+0x5f/0xa0
[ 72.117126][ T5849] binderfs_binder_device_create+0x7bf/0x9c0
[ 72.117141][ T5849] binderfs_fill_super+0x944/0xd90
[ 72.117155][ T5849] ? __pfx_binderfs_fill_super+0x10/0x10
[ 72.117171][ T5849] ? shrinker_register+0x160/0x230
[ 72.117184][ T5849] ? sget_fc+0x909/0x9c0
[ 72.117195][ T5849] ? __pfx_set_anon_super_fc+0x10/0x10
[ 72.117207][ T5849] ? __pfx_binderfs_fill_super+0x10/0x10
[ 72.117220][ T5849] get_tree_nodev+0xb7/0x140
[ 72.117233][ T5849] vfs_get_tree+0x90/0x2b0
[ 72.117247][ T5849] do_new_mount+0x2be/0xb40
[ 72.117257][ T5849] ? __pfx_do_new_mount+0x10/0x10
[ 72.117267][ T5849] __se_sys_mount+0x2d6/0x3c0
[ 72.117276][ T5849] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 72.117290][ T5849] ? __pfx___se_sys_mount+0x10/0x10
[ 72.117300][ T5849] ? do_syscall_64+0x100/0x230
[ 72.117310][ T5849] ? __x64_sys_mount+0x20/0xc0
[ 72.117319][ T5849] do_syscall_64+0xf3/0x230
[ 72.117328][ T5849] ? clear_bhb_loop+0x35/0x90
[ 72.117342][ T5849] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 72.117355][ T5849] RIP: 0033:0x7f81ec1874ca
[ 72.117371][ T5849] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 72.117378][ T5849] RSP: 002b:00007ffc3b665678 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 72.117390][ T5849] RAX: ffffffffffffffda RBX: 00007f81ec201e6b RCX: 00007f81ec1874ca
[ 72.117398][ T5849] RDX: 00007f81ec20ebc7 RSI: 00007f81ec201e6b RDI: 00007f81ec20ebc7
[ 72.117404][ T5849] RBP: 00007f81ec202063 R08: 0000000000000000 R09: 00000000000001ff
[ 72.117410][ T5849] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f81ec1e41c8
[ 72.117416][ T5849] R13: 00007f81ec1e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 72.117424][ T5849]
[ 72.117428][ T5849]
[ 72.390390][ T5849] Allocated by task 5842:
[ 72.394706][ T5849] kasan_save_track+0x3f/0x80
[ 72.399384][ T5849] __kasan_kmalloc+0x98/0xb0
[ 72.403971][ T5849] __kmalloc_cache_noprof+0x243/0x390
[ 72.409594][ T5849] binderfs_binder_device_create+0x16c/0x9c0
[ 72.415566][ T5849] binderfs_fill_super+0x944/0xd90
[ 72.420671][ T5849] get_tree_nodev+0xb7/0x140
[ 72.425274][ T5849] vfs_get_tree+0x90/0x2b0
[ 72.429692][ T5849] do_new_mount+0x2be/0xb40
[ 72.434177][ T5849] __se_sys_mount+0x2d6/0x3c0
[ 72.438840][ T5849] do_syscall_64+0xf3/0x230
[ 72.443350][ T5849] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 72.449233][ T5849]
[ 72.451548][ T5849] Freed by task 5842:
[ 72.455511][ T5849] kasan_save_track+0x3f/0x80
[ 72.460179][ T5849] kasan_save_free_info+0x40/0x50
[ 72.465209][ T5849] __kasan_slab_free+0x59/0x70
[ 72.469986][ T5849] kfree+0x196/0x430
[ 72.473879][ T5849] evict+0x4e8/0x9a0
[ 72.477774][ T5849] __dentry_kill+0x20d/0x630
[ 72.482373][ T5849] shrink_kill+0xa9/0x2c0
[ 72.486693][ T5849] shrink_dentry_list+0x2c0/0x5b0
[ 72.491708][ T5849] shrink_dcache_parent+0xcb/0x3b0
[ 72.496807][ T5849] do_one_tree+0x23/0xe0
[ 72.501037][ T5849] shrink_dcache_for_umount+0xb4/0x180
[ 72.506482][ T5849] generic_shutdown_super+0x6a/0x2d0
[ 72.511755][ T5849] kill_litter_super+0x76/0xb0
[ 72.516507][ T5849] binderfs_kill_super+0x44/0x90
[ 72.521525][ T5849] deactivate_locked_super+0xc4/0x130
[ 72.526893][ T5849] cleanup_mnt+0x41f/0x4b0
[ 72.531319][ T5849] task_work_run+0x24f/0x310
[ 72.535921][ T5849] do_exit+0xa2a/0x28e0
[ 72.540419][ T5849] do_group_exit+0x207/0x2c0
[ 72.544998][ T5849] get_signal+0x16b2/0x1750
[ 72.549487][ T5849] arch_do_signal_or_restart+0x96/0x860
[ 72.555022][ T5849] syscall_exit_to_user_mode+0xce/0x340
[ 72.560575][ T5849] do_syscall_64+0x100/0x230
[ 72.565165][ T5849] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 72.571065][ T5849]
[ 72.573379][ T5849] The buggy address belongs to the object at ffff8880299a2c00
[ 72.573379][ T5849] which belongs to the cache kmalloc-512 of size 512
[ 72.587599][ T5849] The buggy address is located 8 bytes inside of
[ 72.587599][ T5849] freed 512-byte region [ffff8880299a2c00, ffff8880299a2e00)
[ 72.601221][ T5849]
[ 72.603544][ T5849] The buggy address belongs to the physical page:
[ 72.609962][ T5849] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x299a0
[ 72.618981][ T5849] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 72.627569][ T5849] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 72.635113][ T5849] page_type: f5(slab)
[ 72.639170][ T5849] raw: 00fff00000000040 ffff88801ac41c80 ffffea0000b64e00 dead000000000002
[ 72.647773][ T5849] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 72.656353][ T5849] head: 00fff00000000040 ffff88801ac41c80 ffffea0000b64e00 dead000000000002
[ 72.665017][ T5849] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 72.673681][ T5849] head: 00fff00000000002 ffffea0000a66801 ffffffffffffffff 0000000000000000
[ 72.682428][ T5849] head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 72.691083][ T5849] page dumped because: kasan: bad access detected
[ 72.697490][ T5849] page_owner tracks the page as allocated
[ 72.703297][ T5849] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5224, tgid 5224 (udevadm), ts 25188743128, free_ts 24819553670
[ 72.724322][ T5849] post_alloc_hook+0x1f4/0x240
[ 72.729092][ T5849] get_page_from_freelist+0x365c/0x37a0
[ 72.734632][ T5849] __alloc_frozen_pages_noprof+0x292/0x710
[ 72.740433][ T5849] alloc_pages_mpol+0x311/0x660
[ 72.745327][ T5849] allocate_slab+0x8f/0x3a0
[ 72.749820][ T5849] ___slab_alloc+0xc27/0x14a0
[ 72.754489][ T5849] __slab_alloc+0x58/0xa0
[ 72.758807][ T5849] __kmalloc_cache_noprof+0x27b/0x390
[ 72.764166][ T5849] kernfs_fop_open+0x3e0/0xd10
[ 72.768917][ T5849] do_dentry_open+0xdec/0x1960
[ 72.773670][ T5849] vfs_open+0x3b/0x370
[ 72.777723][ T5849] path_openat+0x2c81/0x3590
[ 72.782300][ T5849] do_filp_open+0x27f/0x4e0
[ 72.786791][ T5849] do_sys_openat2+0x13e/0x1d0
[ 72.791455][ T5849] __x64_sys_openat+0x247/0x2a0
[ 72.796290][ T5849] do_syscall_64+0xf3/0x230
[ 72.800795][ T5849] page last free pid 5222 tgid 5222 stack trace:
[ 72.807103][ T5849] free_frozen_pages+0xe0d/0x10e0
[ 72.812121][ T5849] __slab_free+0x2c2/0x380
[ 72.816530][ T5849] qlist_free_all+0x9a/0x140
[ 72.821375][ T5849] kasan_quarantine_reduce+0x14f/0x170
[ 72.826821][ T5849] __kasan_slab_alloc+0x23/0x80
[ 72.831663][ T5849] kmem_cache_alloc_noprof+0x1d9/0x380
[ 72.837199][ T5849] getname_flags+0xb7/0x540
[ 72.841687][ T5849] do_sys_openat2+0xd2/0x1d0
[ 72.846269][ T5849] __x64_sys_openat+0x247/0x2a0
[ 72.851108][ T5849] do_syscall_64+0xf3/0x230
[ 72.855597][ T5849] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 72.861484][ T5849]
[ 72.863791][ T5849] Memory state around the buggy address:
[ 72.869494][ T5849] ffff8880299a2b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 72.877540][ T5849] ffff8880299a2b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 72.885583][ T5849] >ffff8880299a2c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 72.893631][ T5849] ^
[ 72.897943][ T5849] ffff8880299a2c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 72.906017][ T5849] ffff8880299a2d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 72.914062][ T5849] ==================================================================
[ 72.923252][ T5849] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 72.930468][ T5849] CPU: 0 UID: 0 PID: 5849 Comm: syz-executor Not tainted 6.13.0-syzkaller-09685-gc2933b2befe2-dirty #0
[ 72.941496][ T5849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 72.951541][ T5849] Call Trace:
[ 72.954804][ T5849]
[ 72.957809][ T5849] dump_stack_lvl+0x241/0x360
[ 72.962475][ T5849] ? __pfx_dump_stack_lvl+0x10/0x10
[ 72.967674][ T5849] ? __pfx__printk+0x10/0x10
[ 72.972253][ T5849] ? preempt_schedule+0xe1/0xf0
[ 72.977187][ T5849] ? vscnprintf+0x5d/0x90
[ 72.981508][ T5849] panic+0x349/0x880
[ 72.985396][ T5849] ? check_panic_on_warn+0x21/0xb0
[ 72.990505][ T5849] ? __pfx_panic+0x10/0x10
[ 72.994914][ T5849] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 73.000892][ T5849] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 73.007208][ T5849] ? print_report+0x502/0x550
[ 73.011879][ T5849] check_panic_on_warn+0x86/0xb0
[ 73.016812][ T5849] ? binder_add_device+0x5f/0xa0
[ 73.021828][ T5849] end_report+0x77/0x160
[ 73.026070][ T5849] kasan_report+0x154/0x180
[ 73.030566][ T5849] ? binder_add_device+0x5f/0xa0
[ 73.035506][ T5849] binder_add_device+0x5f/0xa0
[ 73.040265][ T5849] binderfs_binder_device_create+0x7bf/0x9c0
[ 73.046247][ T5849] binderfs_fill_super+0x944/0xd90
[ 73.051353][ T5849] ? __pfx_binderfs_fill_super+0x10/0x10
[ 73.057070][ T5849] ? shrinker_register+0x160/0x230
[ 73.062347][ T5849] ? sget_fc+0x909/0x9c0
[ 73.066580][ T5849] ? __pfx_set_anon_super_fc+0x10/0x10
[ 73.072043][ T5849] ? __pfx_binderfs_fill_super+0x10/0x10
[ 73.077665][ T5849] get_tree_nodev+0xb7/0x140
[ 73.082245][ T5849] vfs_get_tree+0x90/0x2b0
[ 73.086651][ T5849] do_new_mount+0x2be/0xb40
[ 73.091145][ T5849] ? __pfx_do_new_mount+0x10/0x10
[ 73.096160][ T5849] __se_sys_mount+0x2d6/0x3c0
[ 73.100825][ T5849] ? lockdep_hardirqs_on_prepare+0x43d/0x780
[ 73.106800][ T5849] ? __pfx___se_sys_mount+0x10/0x10
[ 73.111983][ T5849] ? do_syscall_64+0x100/0x230
[ 73.116746][ T5849] ? __x64_sys_mount+0x20/0xc0
[ 73.121527][ T5849] do_syscall_64+0xf3/0x230
[ 73.126047][ T5849] ? clear_bhb_loop+0x35/0x90
[ 73.130718][ T5849] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 73.136780][ T5849] RIP: 0033:0x7f81ec1874ca
[ 73.141208][ T5849] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
[ 73.160799][ T5849] RSP: 002b:00007ffc3b665678 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 73.169209][ T5849] RAX: ffffffffffffffda RBX: 00007f81ec201e6b RCX: 00007f81ec1874ca
[ 73.177281][ T5849] RDX: 00007f81ec20ebc7 RSI: 00007f81ec201e6b RDI: 00007f81ec20ebc7
[ 73.185349][ T5849] RBP: 00007f81ec202063 R08: 0000000000000000 R09: 00000000000001ff
[ 73.193334][ T5849] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f81ec1e41c8
[ 73.201333][ T5849] R13: 00007f81ec1e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 73.209302][ T5849]
[ 73.212625][ T5849] Kernel Offset: disabled
[ 73.216939][ T5849] Rebooting in 86400 seconds..
syzkaller build log:
go env (err=)
GO111MODULE='auto'
GOARCH='amd64'
GOBIN=''
GOCACHE='/syzkaller/.cache/go-build'
GOENV='/syzkaller/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs-2/linux/gopath'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.22.7'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='1'
GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build3920083089=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at b4fbdbd43b
nothing to commit, working tree clean
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
bin/syz-sysgen
go fmt ./sys/... >/dev/null
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=b4fbdbd43bfd6a8d0392238f019dc602335346d0 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241222-073428'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
mkdir -p ./bin/linux_amd64
g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"b4fbdbd43bfd6a8d0392238f019dc602335346d0\"
/usr/bin/ld: /tmp/ccD8BrUF.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking