loop5: detected capacity change from 0 to 177 nfs: Unknown parameter '*I/\(^' ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x42c9/0x5e70 Read of size 8 at addr ffff88804596c378 by task syz-executor/7749 CPU: 1 PID: 7749 Comm: syz-executor Not tainted 6.1.0-next-20221214 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0x8f/0xb7 print_report+0x175/0x478 kasan_report+0xc0/0x100 __lock_acquire+0x42c9/0x5e70 lock_acquire.part.0+0x11e/0x340 _raw_spin_lock_irq+0x36/0x50 kmemleak_scan+0x1a0/0x1600 kmemleak_write+0x574/0x680 full_proxy_write+0x121/0x190 vfs_write+0x358/0xe40 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f1c341d55c3 Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 RSP: 002b:00007ffd4822afc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ffd4822b608 RCX: 00007f1c341d55c3 RDX: 0000000000000004 RSI: 00007f1c3428bed9 RDI: 0000000000000003 RBP: 0000000000000002 R08: 0000000000000579 R09: 00007ffd48317080 R10: 00007ffd48317090 R11: 0000000000000246 R12: 00000000fffffff6 R13: 00007ffd4822bef1 R14: 0000000000000000 R15: 00000000001562d8 Allocated by task 7693: kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x5c/0x70 kmem_cache_alloc+0x1e1/0x410 __create_object+0x3d/0xc10 __kmem_cache_alloc_node+0x25b/0x400 __kmalloc_node+0x45/0xb0 kvmalloc_node+0xaa/0x200 simple_xattr_alloc+0x47/0xa0 simple_xattr_set+0x7d/0x520 shmem_xattr_handler_set+0x46/0xc0 __vfs_setxattr+0x175/0x1e0 __vfs_setxattr_noperm+0x129/0x600 __vfs_setxattr_locked+0x1d7/0x260 vfs_setxattr+0x143/0x340 do_setxattr+0x155/0x1a0 setxattr+0x14d/0x170 path_setxattr+0x19b/0x1d0 __x64_sys_setxattr+0xc4/0x160 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc Freed by task 7744: kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2e/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0xfb/0x610 rcu_core+0x7be/0x19c0 __do_softirq+0x1c7/0x8f9 Last potentially related work creation: kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0x9f0 __kmem_cache_free+0x95/0x410 kvfree+0x46/0x50 simple_xattr_set+0x27f/0x520 shmem_xattr_handler_set+0x46/0xc0 __vfs_setxattr+0x175/0x1e0 __vfs_setxattr_noperm+0x129/0x600 __vfs_setxattr_locked+0x1d7/0x260 vfs_setxattr+0x143/0x340 do_setxattr+0x155/0x1a0 setxattr+0x14d/0x170 path_setxattr+0x19b/0x1d0 __x64_sys_setxattr+0xc4/0x160 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc Second to last potentially related work creation: kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0x9f0 kmem_cache_free+0xc1/0x610 kfree_skbmem+0xef/0x1b0 consume_skb+0xd8/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xc70 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 The buggy address belongs to the object at ffff88804596c360 which belongs to the cache kmemleak_object of size 368 The buggy address is located 24 bytes inside of 368-byte region [ffff88804596c360, ffff88804596c4d0) The buggy address belongs to the physical page: page:000000005ffb8ee1 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88804596d7a0 pfn:0x4596c head:000000005ffb8ee1 order:1 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0 flags: 0x100000000010200(slab|head|node=0|zone=1) raw: 0100000000010200 ffff88800844f780 ffffea000035b190 ffffea00003b8690 raw: ffff88804596d7a0 000000000012000d 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88804596c200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88804596c280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88804596c300: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb ^ ffff88804596c380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88804596c400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================