==================================================================
BUG: KASAN: slab-use-after-free in rose_timer_expiry+0x31a/0x360 net/rose/rose_timer.c:174
Read of size 2 at addr ffff888066e7042a by task syz-executor.0/17495
CPU: 0 PID: 17495 Comm: syz-executor.0 Not tainted 6.9.0-rc7-syzkaller-01813-gb9d5f5711dd8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
print_address_description mm/kasan/report.c:377 [inline]
print_report+0x169/0x550 mm/kasan/report.c:488
kasan_report+0x143/0x180 mm/kasan/report.c:601
rose_timer_expiry+0x31a/0x360 net/rose/rose_timer.c:174
call_timer_fn+0x18e/0x650 kernel/time/timer.c:1793
expire_timers kernel/time/timer.c:1844 [inline]
__run_timers kernel/time/timer.c:2418 [inline]
__run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2429
run_timer_base kernel/time/timer.c:2438 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2448
handle_softirqs+0x2d6/0x990 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 aa c7 e4 f5 48 89 df e8 c2 07 e6 f5 e8 2d 62 0f f6 fb bf 01 00 00 00 b2 cc d7 f5 65 8b 05 93 d6 75 74 85 c0 74 06 5b c3 cc cc cc cc
RSP: 0018:ffffc9000d097530 EFLAGS: 00000286
RAX: 4e06c35217c6e900 RBX: ffff888064752ce0 RCX: ffffffff8173113a
RDX: dffffc0000000000 RSI: ffffffff8bcab900 RDI: 0000000000000001
RBP: ffffc9000d0976d0 R08: ffffffff92f4659f R09: 1ffffffff25e8cb3
R10: dffffc0000000000 R11: fffffbfff25e8cb4 R12: dffffc0000000000
R13: ffffc9000d097620 R14: ffffea0001894140 R15: 0000000000000000
spin_unlock_irq include/linux/spinlock.h:401 [inline]
__filemap_add_folio+0xd69/0x1ad0 mm/filemap.c:922
filemap_add_folio+0x11e/0x570 mm/filemap.c:947
__filemap_get_folio+0x4b6/0xbb0 mm/filemap.c:1934
ext4_da_write_begin+0x5c9/0xa70 fs/ext4/inode.c:2885
generic_perform_write+0x322/0x640 mm/filemap.c:3974
ext4_buffered_write_iter+0xc6/0x350 fs/ext4/file.c:299
ext4_file_write_iter+0x1de/0x1a10
call_write_iter include/linux/fs.h:2110 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa84/0xcb0 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faecf67dd69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007faed036a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007faecf7abf80 RCX: 00007faecf67dd69
RDX: 00000000ffffff6a RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00007faecf6ca49e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007faecf7abf80 R15: 00007ffd68241048
Allocated by task 60:
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:370 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
kasan_kmalloc include/linux/kasan.h:211 [inline]
kmalloc_trace+0x1db/0x370 mm/slub.c:4003
kmalloc include/linux/slab.h:628 [inline]
kzalloc include/linux/slab.h:749 [inline]
mld_add_delrec net/ipv6/mcast.c:742 [inline]
igmp6_leave_group net/ipv6/mcast.c:2624 [inline]
igmp6_group_dropped+0x3a6/0xef0 net/ipv6/mcast.c:722
__ipv6_dev_mc_dec+0x2bd/0x340 net/ipv6/mcast.c:978
addrconf_leave_solict net/ipv6/addrconf.c:2252 [inline]
__ipv6_ifa_notify+0x912/0x11f0 net/ipv6/addrconf.c:6283
addrconf_ifdown+0xeea/0x1bc0 net/ipv6/addrconf.c:3979
addrconf_notify+0x3cb/0x1020
notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93
call_netdevice_notifiers_extack net/core/dev.c:2031 [inline]
call_netdevice_notifiers net/core/dev.c:2045 [inline]
dev_close_many+0x33c/0x4c0 net/core/dev.c:1586
unregister_netdevice_many_notify+0x544/0x16e0 net/core/dev.c:11202
unregister_netdevice_many net/core/dev.c:11285 [inline]
default_device_exit_batch+0xa0f/0xa90 net/core/dev.c:11768
ops_exit_list net/core/net_namespace.c:178 [inline]
cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640
process_one_work kernel/workqueue.c:3267 [inline]
process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3348
worker_thread+0x86d/0xd70 kernel/workqueue.c:3429
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Freed by task 5211:
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:579
poison_slab_object+0xa6/0xe0 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2111 [inline]
slab_free_freelist_hook mm/slub.c:2140 [inline]
slab_free_bulk mm/slub.c:4299 [inline]
kmem_cache_free_bulk+0x1f8/0x370 mm/slub.c:4513
kfree_bulk include/linux/slab.h:545 [inline]
kvfree_rcu_bulk+0x24b/0x4e0 kernel/rcu/tree.c:3033
kfree_rcu_work+0x44b/0x500 kernel/rcu/tree.c:3112
process_one_work kernel/workqueue.c:3267 [inline]
process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3348
worker_thread+0x86d/0xd70 kernel/workqueue.c:3429
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Last potentially related work creation:
kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47
__kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541
kvfree_call_rcu+0xfc/0x790 kernel/rcu/tree.c:3443
mld_clear_delrec+0x1a1/0x5f0 net/ipv6/mcast.c:824
ipv6_mc_destroy_dev+0x46/0x570 net/ipv6/mcast.c:2790
addrconf_ifdown+0x16dc/0x1bc0 net/ipv6/addrconf.c:3998
addrconf_notify+0x3cb/0x1020
notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93
call_netdevice_notifiers_extack net/core/dev.c:2031 [inline]
call_netdevice_notifiers net/core/dev.c:2045 [inline]
unregister_netdevice_many_notify+0xd9b/0x16e0 net/core/dev.c:11227
unregister_netdevice_many net/core/dev.c:11285 [inline]
default_device_exit_batch+0xa0f/0xa90 net/core/dev.c:11768
ops_exit_list net/core/net_namespace.c:178 [inline]
cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640
process_one_work kernel/workqueue.c:3267 [inline]
process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3348
worker_thread+0x86d/0xd70 kernel/workqueue.c:3429
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
The buggy address belongs to the object at ffff888066e70400
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 42 bytes inside of
freed 512-byte region [ffff888066e70400, ffff888066e70600)
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x66e70
head: order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888015041c80 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
head: 00fff00000000840 ffff888015041c80 dead000000000100 dead000000000122
head: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
head: 00fff00000000002 ffffea00019b9c01 dead000000000122 00000000ffffffff
head: 0000000400000000 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 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5092, tgid 1555658338 (syz-executor.2), ts 5092, free_ts 14107655747
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1534
prep_new_page mm/page_alloc.c:1541 [inline]
get_page_from_freelist+0x3410/0x35b0 mm/page_alloc.c:3317
__alloc_pages+0x256/0x6c0 mm/page_alloc.c:4575
__alloc_pages_node include/linux/gfp.h:238 [inline]
alloc_pages_node include/linux/gfp.h:261 [inline]
alloc_slab_page+0x5f/0x160 mm/slub.c:2180
allocate_slab mm/slub.c:2343 [inline]
new_slab+0x84/0x2f0 mm/slub.c:2396
___slab_alloc+0xc73/0x1260 mm/slub.c:3530
__slab_alloc mm/slub.c:3615 [inline]
__slab_alloc_node mm/slub.c:3668 [inline]
slab_alloc_node mm/slub.c:3841 [inline]
__do_kmalloc_node mm/slub.c:3971 [inline]
__kmalloc+0x2e5/0x4a0 mm/slub.c:3985
kmalloc include/linux/slab.h:632 [inline]
kzalloc include/linux/slab.h:749 [inline]
tomoyo_init_log+0x1b3e/0x2050 security/tomoyo/audit.c:275
tomoyo_supervisor+0x38a/0x11f0 security/tomoyo/common.c:2089
tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
tomoyo_path_number_perm+0x5e8/0x880 security/tomoyo/file.c:734
security_file_ioctl+0x75/0xb0 security/security.c:2764
__do_sys_ioctl fs/ioctl.c:898 [inline]
__se_sys_ioctl+0x47/0x170 fs/ioctl.c:890
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 1 tgid 1 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1141 [inline]
free_unref_page_prepare+0x986/0xab0 mm/page_alloc.c:2347
free_unref_page+0x37/0x3f0 mm/page_alloc.c:2487
free_contig_range+0x9e/0x160 mm/page_alloc.c:6572
destroy_args+0x8a/0x890 mm/debug_vm_pgtable.c:1036
debug_vm_pgtable+0x4be/0x550 mm/debug_vm_pgtable.c:1416
do_one_initcall+0x248/0x880 init/main.c:1245
do_initcall_level+0x157/0x210 init/main.c:1307
do_initcalls+0x3f/0x80 init/main.c:1323
kernel_init_freeable+0x435/0x5d0 init/main.c:1555
kernel_init+0x1d/0x2b0 init/main.c:1444
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Memory state around the buggy address:
ffff888066e70300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888066e70380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888066e70400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888066e70480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888066e70500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: 90 nop
1: f3 0f 1e fa endbr64
5: 53 push %rbx
6: 48 89 fb mov %rdi,%rbx
9: 48 83 c7 18 add $0x18,%rdi
d: 48 8b 74 24 08 mov 0x8(%rsp),%rsi
12: e8 aa c7 e4 f5 call 0xf5e4c7c1
17: 48 89 df mov %rbx,%rdi
1a: e8 c2 07 e6 f5 call 0xf5e607e1
1f: e8 2d 62 0f f6 call 0xf60f6251
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 b2 cc d7 f5 call 0xf5d7cce1 <-- trapping instruction
2f: 65 8b 05 93 d6 75 74 mov %gs:0x7475d693(%rip),%eax # 0x7475d6c9
36: 85 c0 test %eax,%eax
38: 74 06 je 0x40
3a: 5b pop %rbx
3b: c3 ret
3c: cc int3
3d: cc int3
3e: cc int3
3f: cc int3