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+0x63/0xa0 drivers/android/binder.c:6932
Write of size 8 at addr ffff88811b3fde08 by task syz-executor.0/340
CPU: 1 UID: 0 PID: 340 Comm: syz-executor.0 Not tainted 6.14.0-rc1-syzkaller-00034-g92514ef226f5 #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+0x188/0x200 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0x163/0x550 mm/kasan/report.c:489
kasan_report+0x14f/0x190 mm/kasan/report.c:602
__asan_report_store8_noabort+0x1b/0x30 mm/kasan/report_generic.c:386
hlist_add_head include/linux/list.h:1026 [inline]
binder_add_device+0x63/0xa0 drivers/android/binder.c:6932
binderfs_binder_device_create+0x7e7/0x9e0 drivers/android/binderfs.c:210
binderfs_fill_super+0x897/0xcb0 drivers/android/binderfs.c:729
vfs_get_super fs/super.c:1280 [inline]
get_tree_nodev+0xbd/0x160 fs/super.c:1299
binderfs_fs_context_get_tree+0x20/0x30 drivers/android/binderfs.c:749
vfs_get_tree+0x90/0x2c0 fs/super.c:1814
do_new_mount+0x2be/0xb40 fs/namespace.c:3560
path_mount+0x680/0x1000 fs/namespace.c:3887
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2c5/0x3b0 fs/namespace.c:4088
__x64_sys_mount+0xc3/0xe0 fs/namespace.c:4088
x64_sys_call+0x2ca2/0x2e00 arch/x86/include/generated/asm/syscalls_64.h:166
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x54/0xf0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f458ba7e5ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdbd80ca38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f458bac8533 RCX: 00007f458ba7e5ea
RDX: 00007f458bad2e59 RSI: 00007f458bac8533 RDI: 00007f458bad2e59
RBP: 00007ffdbd80cb30 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdbd80d118
R13: 00007ffdbd80d118 R14: 0000000000000001 R15: 00000000fffffff1
Allocated by task 335:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_alloc_info+0x3c/0x50 mm/kasan/generic.c:562
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x9d/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x17c/0x300 mm/slub.c:4325
kmalloc_noprof include/linux/slab.h:901 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
binderfs_binder_device_create+0x15b/0x9e0 drivers/android/binderfs.c:147
binderfs_fill_super+0x897/0xcb0 drivers/android/binderfs.c:729
vfs_get_super fs/super.c:1280 [inline]
get_tree_nodev+0xbd/0x160 fs/super.c:1299
binderfs_fs_context_get_tree+0x20/0x30 drivers/android/binderfs.c:749
vfs_get_tree+0x90/0x2c0 fs/super.c:1814
do_new_mount+0x2be/0xb40 fs/namespace.c:3560
path_mount+0x680/0x1000 fs/namespace.c:3887
do_mount fs/namespace.c:3900 [inline]
__do_sys_mount fs/namespace.c:4111 [inline]
__se_sys_mount+0x2c5/0x3b0 fs/namespace.c:4088
__x64_sys_mount+0xc3/0xe0 fs/namespace.c:4088
x64_sys_call+0x2ca2/0x2e00 arch/x86/include/generated/asm/syscalls_64.h:166
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x54/0xf0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Freed by task 335:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x44/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x57/0x70 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+0x143/0x370 mm/slub.c:4757
binderfs_evict_inode+0x18b/0x230 drivers/android/binderfs.c:278
evict+0x4ab/0x940 fs/inode.c:796
iput_final fs/inode.c:1946 [inline]
iput+0x607/0x920 fs/inode.c:1972
dentry_unlink_inode+0x389/0x460 fs/dcache.c:440
__dentry_kill+0x207/0x640 fs/dcache.c:643
shrink_kill fs/dcache.c:1088 [inline]
shrink_dentry_list+0x319/0x510 fs/dcache.c:1115
shrink_dcache_parent+0xd2/0x360
do_one_tree+0x27/0xf0 fs/dcache.c:1578
shrink_dcache_for_umount+0xa7/0x150 fs/dcache.c:1595
generic_shutdown_super+0x6d/0x300 fs/super.c:620
kill_anon_super+0x4a/0x1e0 fs/super.c:1237
kill_litter_super+0x5a/0x70 fs/super.c:1247
binderfs_kill_super+0x45/0x60 drivers/android/binderfs.c:791
deactivate_locked_super+0xdc/0x290 fs/super.c:473
deactivate_super+0xca/0x100 fs/super.c:506
cleanup_mnt+0x42d/0x4d0 fs/namespace.c:1413
__cleanup_mnt+0x1d/0x30 fs/namespace.c:1420
task_work_run+0x24f/0x300 kernel/task_work.c:227
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xb3d/0x2ad0 kernel/exit.c:938
do_group_exit+0x21f/0x2e0 kernel/exit.c:1087
get_signal+0x1560/0x16b0 kernel/signal.c:3036
arch_do_signal_or_restart+0x96/0x790 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+0x63/0x110 kernel/entry/common.c:218
do_syscall_64+0x60/0xf0 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x76/0x7e
The buggy address belongs to the object at ffff88811b3fde00
which belongs to the cache kmalloc-192 of size 192
The buggy address is located 8 bytes inside of
freed 192-byte region [ffff88811b3fde00, ffff88811b3fdec0)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11b3fd
flags: 0x4000000000000000(zone=1)
page_type: f5(slab)
raw: 4000000000000000 ffff8881000413c0 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x56cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_RETRY_MAYFAIL|__GFP_NORETRY|__GFP_COMP), pid 335, tgid 335 (syz-executor.0), ts 37251789226, free_ts 37020352814
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1eb/0x210 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0x482b/0x48c0 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x3e8/0x890 mm/page_alloc.c:4739
allocate_slab+0x76/0x430 mm/slub.c:2587
new_slab mm/slub.c:2640 [inline]
___slab_alloc+0x7e0/0xcf0 mm/slub.c:3826
__slab_alloc+0x5d/0xb0 mm/slub.c:3916
__slab_alloc_node mm/slub.c:3991 [inline]
slab_alloc_node mm/slub.c:4152 [inline]
__do_kmalloc_node mm/slub.c:4293 [inline]
__kmalloc_node_noprof+0x230/0x430 mm/slub.c:4300
__kvmalloc_node_noprof+0x7e/0x1a0 mm/util.c:662
netif_alloc_rx_queues net/core/dev.c:10591 [inline]
alloc_netdev_mqs+0x972/0xfc0 net/core/dev.c:11521
ip6gre_init_net+0xf7/0x340 net/ipv6/ip6_gre.c:1613
ops_init+0x1a5/0x440 net/core/net_namespace.c:138
setup_net+0x259/0xa40 net/core/net_namespace.c:362
copy_net_ns+0x503/0x820 net/core/net_namespace.c:516
create_new_namespaces+0x41a/0x680 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0x12c/0x190 kernel/nsproxy.c:228
ksys_unshare+0x5e7/0x9d0 kernel/fork.c:3342
page last free pid 16 tgid 16 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_frozen_pages+0x9ee/0xa70 mm/page_alloc.c:2660
__free_pages+0x5f/0xe0 mm/page_alloc.c:4838
pagetable_free include/linux/mm.h:2917 [inline]
pagetable_dtor_free include/linux/mm.h:3015 [inline]
__tlb_remove_table include/asm-generic/tlb.h:216 [inline]
__tlb_remove_table_free mm/mmu_gather.c:227 [inline]
tlb_remove_table_rcu+0x2da/0x400 mm/mmu_gather.c:282
rcu_do_batch+0x57a/0xd20 kernel/rcu/tree.c:2546
rcu_core+0x58b/0xd00 kernel/rcu/tree.c:2802
rcu_core_si+0xd/0x20 kernel/rcu/tree.c:2819
handle_softirqs+0x18f/0x580 kernel/softirq.c:561
run_ksoftirqd+0x2c/0x40 kernel/softirq.c:950
smpboot_thread_fn+0x471/0x8f0 kernel/smpboot.c:164
kthread+0x765/0x8d0 kernel/kthread.c:464
ret_from_fork+0x55/0x90 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff88811b3fdd00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88811b3fdd80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff88811b3fde00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88811b3fde80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff88811b3fdf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
Warning: Permanently added '10.128.0.68' (ED25519) to the list of known hosts.
2025/02/05 23:12:00 ignoring optional flag "sandboxArg"="0"
2025/02/05 23:12:00 ignoring optional flag "type"="gce"
2025/02/05 23:12:00 parsed 1 programs
[ 36.846439][ T308] cgroup: Unknown subsys name 'net'
[ 36.849488][ T30] audit: type=1400 audit(1738797120.879:66): avc: denied { mounton } for pid=308 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=1926 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1
[ 36.875270][ T308] cgroup: Unknown subsys name 'devices'
[ 36.890821][ T30] audit: type=1400 audit(1738797120.879:67): avc: denied { mount } for pid=308 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 36.943265][ T30] audit: type=1400 audit(1738797120.889:68): avc: denied { unmount } for pid=308 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 36.964916][ T30] audit: type=1400 audit(1738797120.919:69): avc: denied { setattr } for pid=316 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=163 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1
[ 36.965039][ T318] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped).
[ 36.988970][ T30] audit: type=1400 audit(1738797120.919:70): avc: denied { create } for pid=317 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 37.016625][ T30] audit: type=1400 audit(1738797120.929:71): avc: denied { write } for pid=317 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 37.037419][ T30] audit: type=1400 audit(1738797120.929:72): avc: denied { read } for pid=317 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1
[ 37.057958][ T30] audit: type=1400 audit(1738797120.929:73): avc: denied { module_request } for pid=317 comm="syz-executor" kmod="netdev-wpan0" scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:kernel_t tclass=system permissive=1
[ 37.080022][ T30] audit: type=1400 audit(1738797120.949:74): avc: denied { mounton } for pid=320 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1
[ 37.104797][ T30] audit: type=1400 audit(1738797120.949:75): avc: denied { mount } for pid=320 comm="syz-executor" name="/" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=filesystem permissive=1
[ 37.105780][ T308] cgroup: Unknown subsys name 'cpuset'
[ 37.134396][ T308] cgroup: Unknown subsys name 'hugetlb'
[ 37.134711][ T315] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 37.140147][ T308] cgroup: Unknown subsys name 'rlimit'
[ 37.154906][ T308] cgroup: Unknown subsys name 'memory'
[ 37.312493][ T340] ==================================================================
[ 37.320387][ T340] BUG: KASAN: slab-use-after-free in binder_add_device+0x63/0xa0
[ 37.327932][ T340] Write of size 8 at addr ffff88811b3fde08 by task syz-executor.0/340
[ 37.335919][ T340]
[ 37.338100][ T340] CPU: 1 UID: 0 PID: 340 Comm: syz-executor.0 Not tainted 6.14.0-rc1-syzkaller-00034-g92514ef226f5 #0
[ 37.338118][ T340] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[ 37.338130][ T340] Call Trace:
[ 37.338138][ T340]
[ 37.338146][ T340] dump_stack_lvl+0x188/0x200
[ 37.338165][ T340] ? __pfx_dump_stack_lvl+0x10/0x10
[ 37.338181][ T340] ? vprintk+0x21/0x30
[ 37.338193][ T340] ? _printk+0xd5/0x120
[ 37.338213][ T340] ? binder_add_device+0x63/0xa0
[ 37.338232][ T340] print_report+0x163/0x550
[ 37.338249][ T340] ? __virt_addr_valid+0x2a8/0x380
[ 37.338269][ T340] ? binder_add_device+0x63/0xa0
[ 37.338289][ T340] ? kasan_complete_mode_report_info+0x75/0x210
[ 37.338311][ T340] ? binder_add_device+0x63/0xa0
[ 37.338331][ T340] kasan_report+0x14f/0x190
[ 37.338347][ T340] ? binder_add_device+0x63/0xa0
[ 37.338368][ T340] __asan_report_store8_noabort+0x1b/0x30
[ 37.338390][ T340] binder_add_device+0x63/0xa0
[ 37.338409][ T340] binderfs_binder_device_create+0x7e7/0x9e0
[ 37.338430][ T340] binderfs_fill_super+0x897/0xcb0
[ 37.338450][ T340] ? __pfx_binderfs_fill_super+0x10/0x10
[ 37.338473][ T340] ? shrinker_register+0x16a/0x230
[ 37.338491][ T340] ? sget_fc+0x908/0x9c0
[ 37.338512][ T340] ? __pfx_set_anon_super_fc+0x10/0x10
[ 37.338528][ T340] get_tree_nodev+0xbd/0x160
[ 37.338541][ T340] ? __pfx_binderfs_fill_super+0x10/0x10
[ 37.338560][ T340] binderfs_fs_context_get_tree+0x20/0x30
[ 37.338579][ T340] vfs_get_tree+0x90/0x2c0
[ 37.338594][ T340] do_new_mount+0x2be/0xb40
[ 37.338610][ T340] ? __pfx_do_new_mount+0x10/0x10
[ 37.338624][ T340] ? security_capable+0x88/0xa0
[ 37.338643][ T340] ? ns_capable+0x8e/0xf0
[ 37.338665][ T340] path_mount+0x680/0x1000
[ 37.338680][ T340] __se_sys_mount+0x2c5/0x3b0
[ 37.338696][ T340] ? __pfx___se_sys_mount+0x10/0x10
[ 37.338714][ T340] __x64_sys_mount+0xc3/0xe0
[ 37.338729][ T340] x64_sys_call+0x2ca2/0x2e00
[ 37.338748][ T340] do_syscall_64+0x54/0xf0
[ 37.338764][ T340] ? clear_bhb_loop+0x35/0x90
[ 37.338783][ T340] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 37.338800][ T340] RIP: 0033:0x7f458ba7e5ea
[ 37.338817][ T340] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48
[ 37.338830][ T340] RSP: 002b:00007ffdbd80ca38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 37.338851][ T340] RAX: ffffffffffffffda RBX: 00007f458bac8533 RCX: 00007f458ba7e5ea
[ 37.338862][ T340] RDX: 00007f458bad2e59 RSI: 00007f458bac8533 RDI: 00007f458bad2e59
[ 37.338873][ T340] RBP: 00007ffdbd80cb30 R08: 0000000000000000 R09: 0000000000000000
[ 37.338882][ T340] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdbd80d118
[ 37.338892][ T340] R13: 00007ffdbd80d118 R14: 0000000000000001 R15: 00000000fffffff1
[ 37.338905][ T340]
[ 37.338910][ T340]
[ 37.614240][ T340] Allocated by task 335:
[ 37.618304][ T340] kasan_save_track+0x3f/0x80
[ 37.622819][ T340] kasan_save_alloc_info+0x3c/0x50
[ 37.627762][ T340] __kasan_kmalloc+0x9d/0xb0
[ 37.632189][ T340] __kmalloc_cache_noprof+0x17c/0x300
[ 37.637397][ T340] binderfs_binder_device_create+0x15b/0x9e0
[ 37.643213][ T340] binderfs_fill_super+0x897/0xcb0
[ 37.648159][ T340] get_tree_nodev+0xbd/0x160
[ 37.652588][ T340] binderfs_fs_context_get_tree+0x20/0x30
[ 37.658229][ T340] vfs_get_tree+0x90/0x2c0
[ 37.662502][ T340] do_new_mount+0x2be/0xb40
[ 37.666827][ T340] path_mount+0x680/0x1000
[ 37.671083][ T340] __se_sys_mount+0x2c5/0x3b0
[ 37.675590][ T340] __x64_sys_mount+0xc3/0xe0
[ 37.680016][ T340] x64_sys_call+0x2ca2/0x2e00
[ 37.684532][ T340] do_syscall_64+0x54/0xf0
[ 37.688788][ T340] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 37.694512][ T340]
[ 37.696686][ T340] Freed by task 335:
[ 37.700416][ T340] kasan_save_track+0x3f/0x80
[ 37.704928][ T340] kasan_save_free_info+0x44/0x50
[ 37.709786][ T340] __kasan_slab_free+0x57/0x70
[ 37.714388][ T340] kfree+0x143/0x370
[ 37.718116][ T340] binderfs_evict_inode+0x18b/0x230
[ 37.723153][ T340] evict+0x4ab/0x940
[ 37.726980][ T340] iput+0x607/0x920
[ 37.730708][ T340] dentry_unlink_inode+0x389/0x460
[ 37.735653][ T340] __dentry_kill+0x207/0x640
[ 37.740078][ T340] shrink_dentry_list+0x319/0x510
[ 37.744951][ T340] shrink_dcache_parent+0xd2/0x360
[ 37.749884][ T340] do_one_tree+0x27/0xf0
[ 37.754055][ T340] shrink_dcache_for_umount+0xa7/0x150
[ 37.759350][ T340] generic_shutdown_super+0x6d/0x300
[ 37.764465][ T340] kill_anon_super+0x4a/0x1e0
[ 37.768978][ T340] kill_litter_super+0x5a/0x70
[ 37.773589][ T340] binderfs_kill_super+0x45/0x60
[ 37.778523][ T340] deactivate_locked_super+0xdc/0x290
[ 37.783831][ T340] deactivate_super+0xca/0x100
[ 37.788413][ T340] cleanup_mnt+0x42d/0x4d0
[ 37.792745][ T340] __cleanup_mnt+0x1d/0x30
[ 37.797447][ T340] task_work_run+0x24f/0x300
[ 37.801859][ T340] do_exit+0xb3d/0x2ad0
[ 37.805937][ T340] do_group_exit+0x21f/0x2e0
[ 37.810371][ T340] get_signal+0x1560/0x16b0
[ 37.814705][ T340] arch_do_signal_or_restart+0x96/0x790
[ 37.820086][ T340] syscall_exit_to_user_mode+0x63/0x110
[ 37.825642][ T340] do_syscall_64+0x60/0xf0
[ 37.830083][ T340] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 37.835796][ T340]
[ 37.837967][ T340] The buggy address belongs to the object at ffff88811b3fde00
[ 37.837967][ T340] which belongs to the cache kmalloc-192 of size 192
[ 37.851858][ T340] The buggy address is located 8 bytes inside of
[ 37.851858][ T340] freed 192-byte region [ffff88811b3fde00, ffff88811b3fdec0)
[ 37.865309][ T340]
[ 37.867477][ T340] The buggy address belongs to the physical page:
[ 37.873728][ T340] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11b3fd
[ 37.882408][ T340] flags: 0x4000000000000000(zone=1)
[ 37.887525][ T340] page_type: f5(slab)
[ 37.891356][ T340] raw: 4000000000000000 ffff8881000413c0 dead000000000122 0000000000000000
[ 37.899771][ T340] raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
[ 37.908195][ T340] page dumped because: kasan: bad access detected
[ 37.914449][ T340] page_owner tracks the page as allocated
[ 37.919984][ T340] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x56cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_RETRY_MAYFAIL|__GFP_NORETRY|__GFP_COMP), pid 335, tgid 335 (syz-executor.0), ts 37251789226, free_ts 37020352814
[ 37.940824][ T340] post_alloc_hook+0x1eb/0x210
[ 37.945419][ T340] get_page_from_freelist+0x482b/0x48c0
[ 37.950802][ T340] __alloc_frozen_pages_noprof+0x3e8/0x890
[ 37.956444][ T340] allocate_slab+0x76/0x430
[ 37.960794][ T340] ___slab_alloc+0x7e0/0xcf0
[ 37.965210][ T340] __slab_alloc+0x5d/0xb0
[ 37.969375][ T340] __kmalloc_node_noprof+0x230/0x430
[ 37.974526][ T340] __kvmalloc_node_noprof+0x7e/0x1a0
[ 37.979613][ T340] alloc_netdev_mqs+0x972/0xfc0
[ 37.984302][ T340] ip6gre_init_net+0xf7/0x340
[ 37.988811][ T340] ops_init+0x1a5/0x440
[ 37.992805][ T340] setup_net+0x259/0xa40
[ 37.996886][ T340] copy_net_ns+0x503/0x820
[ 38.001137][ T340] create_new_namespaces+0x41a/0x680
[ 38.006258][ T340] unshare_nsproxy_namespaces+0x12c/0x190
[ 38.011815][ T340] ksys_unshare+0x5e7/0x9d0
[ 38.016158][ T340] page last free pid 16 tgid 16 stack trace:
[ 38.021969][ T340] free_frozen_pages+0x9ee/0xa70
[ 38.026743][ T340] __free_pages+0x5f/0xe0
[ 38.030909][ T340] tlb_remove_table_rcu+0x2da/0x400
[ 38.035941][ T340] rcu_do_batch+0x57a/0xd20
[ 38.040284][ T340] rcu_core+0x58b/0xd00
[ 38.044275][ T340] rcu_core_si+0xd/0x20
[ 38.048268][ T340] handle_softirqs+0x18f/0x580
[ 38.052876][ T340] run_ksoftirqd+0x2c/0x40
[ 38.057126][ T340] smpboot_thread_fn+0x471/0x8f0
[ 38.061893][ T340] kthread+0x765/0x8d0
[ 38.065800][ T340] ret_from_fork+0x55/0x90
[ 38.070055][ T340] ret_from_fork_asm+0x1a/0x30
[ 38.074654][ T340]
[ 38.076824][ T340] Memory state around the buggy address:
[ 38.082296][ T340] ffff88811b3fdd00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 38.090191][ T340] ffff88811b3fdd80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 38.098090][ T340] >ffff88811b3fde00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 38.105985][ T340] ^
[ 38.110153][ T340] ffff88811b3fde80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[ 38.118053][ T340] ffff88811b3fdf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 38.125968][ T340] ==================================================================
[ 38.134226][ T340] Disabling lock debugging due to kernel taint
[ 38.200978][ T345] bridge0: port 1(bridge_slave_0) entered blocking state
[ 38.207835][ T345] bridge0: port 1(bridge_slave_0) entered disabled state
[ 38.214926][ T345] bridge_slave_0: entered allmulticast mode
[ 38.221361][ T345] bridge_slave_0: entered promiscuous mode
[ 38.227607][ T345] bridge0: port 2(bridge_slave_1) entered blocking state
[ 38.234479][ T345] bridge0: port 2(bridge_slave_1) entered disabled state
[ 38.241352][ T345] bridge_slave_1: entered allmulticast mode
[ 38.247378][ T345] bridge_slave_1: entered promiscuous mode
[ 38.298383][ T345] bridge0: port 2(bridge_slave_1) entered blocking state
[ 38.305266][ T345] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 38.312406][ T345] bridge0: port 1(bridge_slave_0) entered blocking state
[ 38.319244][ T345] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 38.345012][ T346] bridge0: port 1(bridge_slave_0) entered disabled state
[ 38.353101][ T346] bridge0: port 2(bridge_slave_1) entered disabled state
[ 38.362617][ T39] bridge0: port 1(bridge_slave_0) entered blocking state
[ 38.369469][ T39] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 38.379060][ T346] bridge0: port 2(bridge_slave_1) entered blocking state
[ 38.385966][ T346] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 38.410642][ T345] veth0_vlan: entered promiscuous mode
[ 38.421405][ T345] veth1_macvtap: entered promiscuous mode
[ 38.456034][ T345] syz-executor.0 (345) used greatest stack depth: 20880 bytes left
[ 38.472529][ T11] bridge_slave_1: left allmulticast mode
[ 38.478006][ T11] bridge_slave_1: left promiscuous mode
[ 38.483754][ T11] bridge0: port 2(bridge_slave_1) entered disabled state
[ 38.491494][ T11] bridge_slave_0: left allmulticast mode
[ 38.496976][ T11] bridge_slave_0: left promiscuous mode
[ 38.502765][ T11] bridge0: port 1(bridge_slave_0) entered disabled state
[ 38.611934][ T11] veth1_macvtap: left promiscuous mode
[ 38.617295][ T11] veth0_vlan: left promiscuous mode
2025/02/05 23:12:02 executed programs: 0
[ 38.994162][ T381] bridge0: port 1(bridge_slave_0) entered blocking state
[ 39.001162][ T381] bridge0: port 1(bridge_slave_0) entered disabled state
[ 39.008019][ T381] bridge_slave_0: entered allmulticast mode
[ 39.014256][ T381] bridge_slave_0: entered promiscuous mode
[ 39.020572][ T381] bridge0: port 2(bridge_slave_1) entered blocking state
[ 39.027411][ T381] bridge0: port 2(bridge_slave_1) entered disabled state
[ 39.034784][ T381] bridge_slave_1: entered allmulticast mode
[ 39.040964][ T381] bridge_slave_1: entered promiscuous mode
[ 39.123573][ T381] bridge0: port 2(bridge_slave_1) entered blocking state
[ 39.130470][ T381] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 39.137555][ T381] bridge0: port 1(bridge_slave_0) entered blocking state
[ 39.144361][ T381] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 39.169067][ T346] bridge0: port 1(bridge_slave_0) entered disabled state
[ 39.176164][ T346] bridge0: port 2(bridge_slave_1) entered disabled state
[ 39.186253][ T346] bridge0: port 1(bridge_slave_0) entered blocking state
[ 39.193120][ T346] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 39.202198][ T346] bridge0: port 2(bridge_slave_1) entered blocking state
[ 39.209043][ T346] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 39.237264][ T381] veth0_vlan: entered promiscuous mode
[ 39.247942][ T381] veth1_macvtap: entered promiscuous mode
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-build935356206=/tmp/go-build -gno-record-gcc-switches'
git status (err=)
HEAD detached at 34889ee3b0
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
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=34889ee3b09e7b4d381828377aa6173bfcc36cc7 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240528-103526'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=34889ee3b09e7b4d381828377aa6173bfcc36cc7 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240528-103526'" "-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++14 -I. -Iexecutor/_include -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"34889ee3b09e7b4d381828377aa6173bfcc36cc7\"