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+0x5b/0xa0 drivers/android/binder.c:6932
Write of size 8 at addr ffff8880314f7008 by task syz-executor/5792
CPU: 1 UID: 0 PID: 5792 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller #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+0x23d/0x360 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0x165/0x540 mm/kasan/report.c:489
kasan_report+0x13f/0x180 mm/kasan/report.c:602
hlist_add_head include/linux/list.h:1026 [inline]
binder_add_device+0x5b/0xa0 drivers/android/binder.c:6932
binderfs_binder_device_create+0x7bf/0x9c0 drivers/android/binderfs.c:210
binderfs_fill_super+0x940/0xd90 drivers/android/binderfs.c:729
vfs_get_super fs/super.c:1280 [inline]
get_tree_nodev+0xb3/0x140 fs/super.c:1299
vfs_get_tree+0x8c/0x280 fs/super.c:1814
do_new_mount+0x2ba/0xb40 fs/namespace.c:3560
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2d2/0x3c0 fs/namespace.c:4088
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7ff62c9874ca
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:00007ffc5aefed28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff62ca01e6b RCX: 00007ff62c9874ca
RDX: 00007ff62ca0ebc7 RSI: 00007ff62ca01e6b RDI: 00007ff62ca0ebc7
RBP: 00007ff62ca02063 R08: 0000000000000000 R09: 00000000000001ff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff62c9e41c8
R13: 00007ff62c9e41a8 R14: 0000000000000009 R15: 0000000000000000
Allocated by task 5784:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3b/0x70 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x94/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x237/0x370 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+0x940/0xd90 drivers/android/binderfs.c:729
vfs_get_super fs/super.c:1280 [inline]
get_tree_nodev+0xb3/0x140 fs/super.c:1299
vfs_get_tree+0x8c/0x280 fs/super.c:1814
do_new_mount+0x2ba/0xb40 fs/namespace.c:3560
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2d2/0x3c0 fs/namespace.c:4088
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Freed by task 5784:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3b/0x70 mm/kasan/common.c:68
kasan_save_free_info+0x3c/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x55/0x70 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+0x18e/0x410 mm/slub.c:4757
evict+0x4e4/0x990 fs/inode.c:796
__dentry_kill+0x200/0x610 fs/dcache.c:643
shrink_kill+0xa9/0x2c0 fs/dcache.c:1088
shrink_dentry_list+0x2bc/0x5b0 fs/dcache.c:1115
shrink_dcache_parent+0xc7/0x3b0
do_one_tree+0x23/0xe0 fs/dcache.c:1578
shrink_dcache_for_umount+0xb0/0x170 fs/dcache.c:1595
generic_shutdown_super+0x66/0x2d0 fs/super.c:620
kill_anon_super fs/super.c:1237 [inline]
kill_litter_super+0x72/0xa0 fs/super.c:1247
binderfs_kill_super+0x40/0x90 drivers/android/binderfs.c:791
deactivate_locked_super+0xc0/0x120 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1413
task_work_run+0x24b/0x310 kernel/task_work.c:227
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa26/0x28d0 kernel/exit.c:938
do_group_exit+0x203/0x2b0 kernel/exit.c:1087
get_signal+0x16ae/0x1740 kernel/signal.c:3036
arch_do_signal_or_restart+0x92/0x860 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+0xc9/0x320 kernel/entry/common.c:218
do_syscall_64+0x8a/0x180 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x76/0x7e
The buggy address belongs to the object at ffff8880314f7000
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
freed 512-byte region [ffff8880314f7000, ffff8880314f7200)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x314f4
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 ffff88801a441c80 ffffea0000c76e00 dead000000000002
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801a441c80 ffffea0000c76e00 dead000000000002
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0000c53d01 ffffffffffffffff 0000000000000000
head: ffff888000000004 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 5151, tgid 5151 (udevd), ts 44102571428, free_ts 43969095527
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1e0/0x220 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x35e2/0x3720 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x252/0x680 mm/page_alloc.c:4739
alloc_pages_mpol+0x30d/0x660 mm/mempolicy.c:2270
alloc_slab_page mm/slub.c:2423 [inline]
allocate_slab+0x8f/0x390 mm/slub.c:2587
new_slab mm/slub.c:2640 [inline]
___slab_alloc+0xc35/0x1490 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+0x26f/0x370 mm/slub.c:4320
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
kernfs_fop_open+0x3dc/0xd00 fs/kernfs/file.c:623
do_dentry_open+0xdea/0x1960 fs/open.c:956
vfs_open+0x37/0x360 fs/open.c:1086
do_open fs/namei.c:3830 [inline]
path_openat+0x2c79/0x3580 fs/namei.c:3989
do_filp_open+0x27b/0x4d0 fs/namei.c:4016
do_sys_openat2+0x13a/0x1d0 fs/open.c:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1454
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83
page last free pid 5147 tgid 5147 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0xddf/0x10a0 mm/page_alloc.c:2660
__slab_free+0x2be/0x370 mm/slub.c:4520
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x130 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x1f/0x70 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]
__do_kmalloc_node mm/slub.c:4293 [inline]
__kmalloc_noprof+0x22e/0x4a0 mm/slub.c:4306
kmalloc_noprof include/linux/slab.h:905 [inline]
kmalloc_array_noprof include/linux/slab.h:946 [inline]
security_inode_init_security+0x122/0x480 security/security.c:1829
shmem_mknod+0x1fb/0x3c0 mm/shmem.c:3838
lookup_open fs/namei.c:3651 [inline]
open_last_lookups fs/namei.c:3750 [inline]
path_openat+0x1938/0x3580 fs/namei.c:3986
do_filp_open+0x27b/0x4d0 fs/namei.c:4016
do_sys_openat2+0x13a/0x1d0 fs/open.c:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1454
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x7e/0x180 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Memory state around the buggy address:
ffff8880314f6f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880314f6f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880314f7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880314f7080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880314f7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Warning: Permanently added '10.128.0.29' (ED25519) to the list of known hosts.
2025/02/10 09:37:49 ignoring optional flag "sandboxArg"="0"
2025/02/10 09:37:49 parsed 1 programs
syzkaller login: [ 76.799552][ T5767] cgroup: Unknown subsys name 'net'
[ 76.930031][ T5767] cgroup: Unknown subsys name 'cpuset'
[ 76.938742][ T5767] cgroup: Unknown subsys name 'rlimit'
[ 76.944374][ T5767] cgroup: Unknown subsys name 'memory'
[ 78.528811][ T5767] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 81.952196][ T5792] ==================================================================
[ 81.960331][ T5792] BUG: KASAN: slab-use-after-free in binder_add_device+0x5b/0xa0
[ 81.968103][ T5792] Write of size 8 at addr ffff8880314f7008 by task syz-executor/5792
[ 81.976195][ T5792]
[ 81.978559][ T5792] CPU: 1 UID: 0 PID: 5792 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller #0
[ 81.978587][ T5792] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 81.978609][ T5792] Call Trace:
[ 81.978617][ T5792]
[ 81.978626][ T5792] dump_stack_lvl+0x23d/0x360
[ 81.978661][ T5792] ? __pfx_dump_stack_lvl+0x10/0x10
[ 81.978690][ T5792] ? __pfx__printk+0x10/0x10
[ 81.978718][ T5792] ? _printk+0xd1/0x120
[ 81.978745][ T5792] ? __virt_addr_valid+0x17f/0x530
[ 81.978766][ T5792] ? __virt_addr_valid+0x17f/0x530
[ 81.978788][ T5792] print_report+0x165/0x540
[ 81.978820][ T5792] ? __virt_addr_valid+0x17f/0x530
[ 81.978840][ T5792] ? __virt_addr_valid+0x17f/0x530
[ 81.978859][ T5792] ? __virt_addr_valid+0x45b/0x530
[ 81.978879][ T5792] ? __phys_addr+0xb6/0x170
[ 81.978900][ T5792] ? binder_add_device+0x5b/0xa0
[ 81.978927][ T5792] kasan_report+0x13f/0x180
[ 81.978960][ T5792] ? binder_add_device+0x5b/0xa0
[ 81.978983][ T5792] binder_add_device+0x5b/0xa0
[ 81.979003][ T5792] binderfs_binder_device_create+0x7bf/0x9c0
[ 81.979041][ T5792] binderfs_fill_super+0x940/0xd90
[ 81.979077][ T5792] ? __pfx_binderfs_fill_super+0x10/0x10
[ 81.979120][ T5792] ? shrinker_register+0x15c/0x220
[ 81.979148][ T5792] ? sget_fc+0x905/0x9c0
[ 81.979180][ T5792] ? __pfx_set_anon_super_fc+0x10/0x10
[ 81.979199][ T5792] ? __pfx_binderfs_fill_super+0x10/0x10
[ 81.979231][ T5792] get_tree_nodev+0xb3/0x140
[ 81.979252][ T5792] vfs_get_tree+0x8c/0x280
[ 81.979274][ T5792] do_new_mount+0x2ba/0xb40
[ 81.979302][ T5792] ? __pfx_do_new_mount+0x10/0x10
[ 81.979332][ T5792] __se_sys_mount+0x2d2/0x3c0
[ 81.979359][ T5792] ? lockdep_hardirqs_on_prepare+0x439/0x7a0
[ 81.979391][ T5792] ? __pfx___se_sys_mount+0x10/0x10
[ 81.979419][ T5792] ? __x64_sys_mount+0x1c/0xc0
[ 81.979445][ T5792] do_syscall_64+0x7e/0x180
[ 81.979471][ T5792] ? clear_bhb_loop+0x45/0xa0
[ 81.979501][ T5792] ? clear_bhb_loop+0x45/0xa0
[ 81.979530][ T5792] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 81.979564][ T5792] RIP: 0033:0x7ff62c9874ca
[ 81.979587][ T5792] 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
[ 81.979604][ T5792] RSP: 002b:00007ffc5aefed28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 81.979626][ T5792] RAX: ffffffffffffffda RBX: 00007ff62ca01e6b RCX: 00007ff62c9874ca
[ 81.979641][ T5792] RDX: 00007ff62ca0ebc7 RSI: 00007ff62ca01e6b RDI: 00007ff62ca0ebc7
[ 81.979656][ T5792] RBP: 00007ff62ca02063 R08: 0000000000000000 R09: 00000000000001ff
[ 81.979669][ T5792] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff62c9e41c8
[ 81.979682][ T5792] R13: 00007ff62c9e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 81.979702][ T5792]
[ 81.979710][ T5792]
[ 82.250906][ T5792] Allocated by task 5784:
[ 82.255263][ T5792] kasan_save_track+0x3b/0x70
[ 82.260063][ T5792] __kasan_kmalloc+0x94/0xb0
[ 82.264673][ T5792] __kmalloc_cache_noprof+0x237/0x370
[ 82.270053][ T5792] binderfs_binder_device_create+0x16c/0x9c0
[ 82.276044][ T5792] binderfs_fill_super+0x940/0xd90
[ 82.281169][ T5792] get_tree_nodev+0xb3/0x140
[ 82.285767][ T5792] vfs_get_tree+0x8c/0x280
[ 82.290188][ T5792] do_new_mount+0x2ba/0xb40
[ 82.294696][ T5792] __se_sys_mount+0x2d2/0x3c0
[ 82.299391][ T5792] do_syscall_64+0x7e/0x180
[ 82.303898][ T5792] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 82.309826][ T5792]
[ 82.312149][ T5792] Freed by task 5784:
[ 82.316133][ T5792] kasan_save_track+0x3b/0x70
[ 82.320847][ T5792] kasan_save_free_info+0x3c/0x50
[ 82.325896][ T5792] __kasan_slab_free+0x55/0x70
[ 82.330685][ T5792] kfree+0x18e/0x410
[ 82.334583][ T5792] evict+0x4e4/0x990
[ 82.338479][ T5792] __dentry_kill+0x200/0x610
[ 82.343075][ T5792] shrink_kill+0xa9/0x2c0
[ 82.347415][ T5792] shrink_dentry_list+0x2bc/0x5b0
[ 82.352450][ T5792] shrink_dcache_parent+0xc7/0x3b0
[ 82.357573][ T5792] do_one_tree+0x23/0xe0
[ 82.361847][ T5792] shrink_dcache_for_umount+0xb0/0x170
[ 82.367336][ T5792] generic_shutdown_super+0x66/0x2d0
[ 82.372641][ T5792] kill_litter_super+0x72/0xa0
[ 82.377412][ T5792] binderfs_kill_super+0x40/0x90
[ 82.382366][ T5792] deactivate_locked_super+0xc0/0x120
[ 82.387750][ T5792] cleanup_mnt+0x41f/0x4b0
[ 82.392203][ T5792] task_work_run+0x24b/0x310
[ 82.396797][ T5792] do_exit+0xa26/0x28d0
[ 82.400964][ T5792] do_group_exit+0x203/0x2b0
[ 82.405568][ T5792] get_signal+0x16ae/0x1740
[ 82.410073][ T5792] arch_do_signal_or_restart+0x92/0x860
[ 82.415630][ T5792] syscall_exit_to_user_mode+0xc9/0x320
[ 82.421193][ T5792] do_syscall_64+0x8a/0x180
[ 82.425700][ T5792] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 82.431602][ T5792]
[ 82.433924][ T5792] The buggy address belongs to the object at ffff8880314f7000
[ 82.433924][ T5792] which belongs to the cache kmalloc-512 of size 512
[ 82.447979][ T5792] The buggy address is located 8 bytes inside of
[ 82.447979][ T5792] freed 512-byte region [ffff8880314f7000, ffff8880314f7200)
[ 82.461603][ T5792]
[ 82.463928][ T5792] The buggy address belongs to the physical page:
[ 82.470345][ T5792] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x314f4
[ 82.479112][ T5792] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
[ 82.487609][ T5792] flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
[ 82.495171][ T5792] page_type: f5(slab)
[ 82.499163][ T5792] raw: 00fff00000000040 ffff88801a441c80 ffffea0000c76e00 dead000000000002
[ 82.507832][ T5792] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 82.516414][ T5792] head: 00fff00000000040 ffff88801a441c80 ffffea0000c76e00 dead000000000002
[ 82.525084][ T5792] head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 82.533755][ T5792] head: 00fff00000000002 ffffea0000c53d01 ffffffffffffffff 0000000000000000
[ 82.542423][ T5792] head: ffff888000000004 0000000000000000 00000000ffffffff 0000000000000000
[ 82.551093][ T5792] page dumped because: kasan: bad access detected
[ 82.557597][ T5792] page_owner tracks the page as allocated
[ 82.563306][ T5792] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5151, tgid 5151 (udevd), ts 44102571428, free_ts 43969095527
[ 82.584103][ T5792] post_alloc_hook+0x1e0/0x220
[ 82.588912][ T5792] get_page_from_freelist+0x35e2/0x3720
[ 82.594466][ T5792] __alloc_frozen_pages_noprof+0x252/0x680
[ 82.600282][ T5792] alloc_pages_mpol+0x30d/0x660
[ 82.605134][ T5792] allocate_slab+0x8f/0x390
[ 82.609651][ T5792] ___slab_alloc+0xc35/0x1490
[ 82.614332][ T5792] __slab_alloc+0x58/0xa0
[ 82.618665][ T5792] __kmalloc_cache_noprof+0x26f/0x370
[ 82.624045][ T5792] kernfs_fop_open+0x3dc/0xd00
[ 82.628819][ T5792] do_dentry_open+0xdea/0x1960
[ 82.633591][ T5792] vfs_open+0x37/0x360
[ 82.637666][ T5792] path_openat+0x2c79/0x3580
[ 82.642263][ T5792] do_filp_open+0x27b/0x4d0
[ 82.646780][ T5792] do_sys_openat2+0x13a/0x1d0
[ 82.651462][ T5792] __x64_sys_openat+0x243/0x290
[ 82.656318][ T5792] do_syscall_64+0x7e/0x180
[ 82.660831][ T5792] page last free pid 5147 tgid 5147 stack trace:
[ 82.667169][ T5792] free_frozen_pages+0xddf/0x10a0
[ 82.672202][ T5792] __slab_free+0x2be/0x370
[ 82.676637][ T5792] qlist_free_all+0x9a/0x130
[ 82.681236][ T5792] kasan_quarantine_reduce+0x14b/0x160
[ 82.686704][ T5792] __kasan_slab_alloc+0x1f/0x70
[ 82.691580][ T5792] __kmalloc_noprof+0x22e/0x4a0
[ 82.696430][ T5792] security_inode_init_security+0x122/0x480
[ 82.702336][ T5792] shmem_mknod+0x1fb/0x3c0
[ 82.706756][ T5792] path_openat+0x1938/0x3580
[ 82.711365][ T5792] do_filp_open+0x27b/0x4d0
[ 82.715888][ T5792] do_sys_openat2+0x13a/0x1d0
[ 82.720582][ T5792] __x64_sys_openat+0x243/0x290
[ 82.725440][ T5792] do_syscall_64+0x7e/0x180
[ 82.730041][ T5792] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 82.735950][ T5792]
[ 82.738279][ T5792] Memory state around the buggy address:
[ 82.743908][ T5792] ffff8880314f6f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 82.751972][ T5792] ffff8880314f6f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 82.760041][ T5792] >ffff8880314f7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 82.768103][ T5792] ^
[ 82.772436][ T5792] ffff8880314f7080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 82.780518][ T5792] ffff8880314f7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 82.788577][ T5792] ==================================================================
[ 82.909284][ T5792] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 82.916550][ T5792] CPU: 1 UID: 0 PID: 5792 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller #0
[ 82.925699][ T5792] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 82.935798][ T5792] Call Trace:
[ 82.939113][ T5792]
[ 82.942068][ T5792] dump_stack_lvl+0x23d/0x360
[ 82.946790][ T5792] ? __pfx_dump_stack_lvl+0x10/0x10
[ 82.952004][ T5792] ? __pfx__printk+0x10/0x10
[ 82.956607][ T5792] ? preempt_schedule+0xdd/0xf0
[ 82.961463][ T5792] ? vscnprintf+0x59/0x80
[ 82.965805][ T5792] panic+0x345/0x880
[ 82.969726][ T5792] ? asm_sysvec_apic_timer_interrupt+0x16/0x20
[ 82.975923][ T5792] ? check_panic_on_warn+0x1d/0xa0
[ 82.981063][ T5792] ? __pfx_panic+0x10/0x10
[ 82.985507][ T5792] ? _raw_spin_unlock_irqrestore+0x12c/0x140
[ 82.991493][ T5792] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 82.997848][ T5792] ? print_report+0x4fe/0x540
[ 83.002628][ T5792] check_panic_on_warn+0x82/0xa0
[ 83.007583][ T5792] ? binder_add_device+0x5b/0xa0
[ 83.012528][ T5792] end_report+0x77/0x150
[ 83.017048][ T5792] kasan_report+0x150/0x180
[ 83.021582][ T5792] ? binder_add_device+0x5b/0xa0
[ 83.026527][ T5792] binder_add_device+0x5b/0xa0
[ 83.031318][ T5792] binderfs_binder_device_create+0x7bf/0x9c0
[ 83.037332][ T5792] binderfs_fill_super+0x940/0xd90
[ 83.042474][ T5792] ? __pfx_binderfs_fill_super+0x10/0x10
[ 83.048144][ T5792] ? shrinker_register+0x15c/0x220
[ 83.053293][ T5792] ? sget_fc+0x905/0x9c0
[ 83.057551][ T5792] ? __pfx_set_anon_super_fc+0x10/0x10
[ 83.063012][ T5792] ? __pfx_binderfs_fill_super+0x10/0x10
[ 83.068661][ T5792] get_tree_nodev+0xb3/0x140
[ 83.073262][ T5792] vfs_get_tree+0x8c/0x280
[ 83.077685][ T5792] do_new_mount+0x2ba/0xb40
[ 83.082200][ T5792] ? __pfx_do_new_mount+0x10/0x10
[ 83.087264][ T5792] __se_sys_mount+0x2d2/0x3c0
[ 83.091952][ T5792] ? lockdep_hardirqs_on_prepare+0x439/0x7a0
[ 83.097945][ T5792] ? __pfx___se_sys_mount+0x10/0x10
[ 83.103152][ T5792] ? __x64_sys_mount+0x1c/0xc0
[ 83.107923][ T5792] do_syscall_64+0x7e/0x180
[ 83.112443][ T5792] ? clear_bhb_loop+0x45/0xa0
[ 83.117136][ T5792] ? clear_bhb_loop+0x45/0xa0
[ 83.121825][ T5792] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 83.127748][ T5792] RIP: 0033:0x7ff62c9874ca
[ 83.132177][ T5792] 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
[ 83.151880][ T5792] RSP: 002b:00007ffc5aefed28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 83.160300][ T5792] RAX: ffffffffffffffda RBX: 00007ff62ca01e6b RCX: 00007ff62c9874ca
[ 83.168276][ T5792] RDX: 00007ff62ca0ebc7 RSI: 00007ff62ca01e6b RDI: 00007ff62ca0ebc7
[ 83.176250][ T5792] RBP: 00007ff62ca02063 R08: 0000000000000000 R09: 00000000000001ff
[ 83.184320][ T5792] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff62c9e41c8
[ 83.192295][ T5792] R13: 00007ff62c9e41a8 R14: 0000000000000009 R15: 0000000000000000
[ 83.200274][ T5792]
[ 83.203586][ T5792] Kernel Offset: disabled
[ 83.207919][ T5792] 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-build2437315226=/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/ccOhaIjI.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