Hello, syzbot found the following issue on: HEAD commit: 12e6ccedb311 Merge tag 'for-6.5-rc6-tag' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14a473c3a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=9c37cc0e4fcc5f8d dashboard link: https://syzkaller.appspot.com/bug?extid=c112bdc84725cc12e9d7 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/98b787651bf9/disk-12e6cced.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/77bae22a06a8/vmlinux-12e6cced.xz kernel image: https://storage.googleapis.com/syzbot-assets/9c557fef4b74/bzImage-12e6cced.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c112bdc84725cc12e9d7@xxxxxxxxxxxxxxxxxxxxxxxxx xpad 4-1:179.65: xpad_irq_in - usb_submit_urb failed with result -19 xpad 4-1:179.65: xpad_irq_out - usb_submit_urb failed with result -19 ================================================================== BUG: KASAN: slab-use-after-free in register_lock_class+0x8ec/0x990 kernel/locking/lockdep.c:1341 Read of size 1 at addr ffff88807e3f8891 by task udevd/4469 CPU: 1 PID: 4469 Comm: udevd Not tainted 6.5.0-rc6-syzkaller-00243-g12e6ccedb311 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0x163/0x540 mm/kasan/report.c:475 kasan_report+0x175/0x1b0 mm/kasan/report.c:588 register_lock_class+0x8ec/0x990 kernel/locking/lockdep.c:1341 __lock_acquire+0x190/0x7f70 kernel/locking/lockdep.c:5021 lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5761 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 __wake_up_common_lock kernel/sched/wait.c:137 [inline] __wake_up+0x101/0x1d0 kernel/sched/wait.c:160 __usb_hcd_giveback_urb+0x3a8/0x530 drivers/usb/core/hcd.c:1674 dummy_timer+0x8aa/0x3210 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0x178/0x580 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x64f/0x860 kernel/time/timer.c:2022 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2035 __do_softirq+0x2ab/0x908 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu+0xf1/0x1b0 kernel/softirq.c:632 irq_exit_rcu+0x9/0x20 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1109 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:__do_kmalloc_node mm/slab_common.c:979 [inline] RIP: 0010:__kmalloc+0x4b/0x230 mm/slab_common.c:998 Code: 20 00 00 0f 83 dc 00 00 00 49 81 fc c0 00 00 00 77 1a 4d 85 e4 0f 84 b2 00 00 00 41 8d 44 24 ff c1 e8 03 0f b6 80 d0 b4 c8 8c <eb> 15 41 8d 44 24 ff 89 44 24 04 b8 ff ff ff ff 0f bd 44 24 04 ff RSP: 0018:ffffc90005a6f8f0 EFLAGS: 00000206 RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000000001 RDX: ffff88807d3d3b80 RSI: 0000000000000d40 RDI: 0000000000000034 RBP: ffff88802d052fd5 R08: ffffffff83f876b5 R09: 1ffffffff1d30ee5 R10: dffffc0000000000 R11: fffffbfff1d30ee6 R12: 0000000000000034 R13: 0000000000000d40 R14: ffffffff83f876ef R15: ffff88802d052fd5 kmalloc include/linux/slab.h:586 [inline] kzalloc include/linux/slab.h:703 [inline] tomoyo_encode2 security/tomoyo/realpath.c:45 [inline] tomoyo_encode+0x26f/0x530 security/tomoyo/realpath.c:80 tomoyo_realpath_from_path+0x598/0x5e0 security/tomoyo/realpath.c:283 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x28d/0x700 security/tomoyo/file.c:822 security_inode_getattr+0xd3/0x120 security/security.c:2114 vfs_getattr fs/stat.c:167 [inline] vfs_statx+0x18f/0x480 fs/stat.c:242 vfs_fstatat fs/stat.c:276 [inline] __do_sys_newfstatat fs/stat.c:446 [inline] __se_sys_newfstatat fs/stat.c:440 [inline] __x64_sys_newfstatat+0x14f/0x1d0 fs/stat.c:440 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5afc5165f4 Code: 64 c7 00 09 00 00 00 83 c8 ff c3 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 00 00 00 00 41 89 ca b8 06 01 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 10 48 8b 15 03 a8 0d 00 f7 d8 41 83 c8 RSP: 002b:00007ffe54728548 EFLAGS: 00000202 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 0000559a69f9e550 RCX: 00007f5afc5165f4 RDX: 00007ffe54728560 RSI: 00007f5afc5b3130 RDI: 000000000000000d RBP: 0000559a69fb6410 R08: 0000000000090800 R09: 0000559a69f87540 R10: 0000000000001000 R11: 0000000000000202 R12: 00007ffe54728560 R13: 00000000000000ff R14: 0000559a694341c4 R15: 0000000000000000 </TASK> Allocated by task 22871: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:582 [inline] kzalloc include/linux/slab.h:703 [inline] xpad_probe+0x3c8/0x1b90 drivers/input/joystick/xpad.c:1975 usb_probe_interface+0x5c4/0xb00 drivers/usb/core/driver.c:396 really_probe+0x294/0xc30 drivers/base/dd.c:658 __driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:798 driver_probe_device+0x50/0x420 drivers/base/dd.c:828 __device_attach_driver+0x2d3/0x520 drivers/base/dd.c:956 bus_for_each_drv+0x24a/0x2d0 drivers/base/bus.c:457 __device_attach+0x32f/0x510 drivers/base/dd.c:1028 bus_probe_device+0x185/0x260 drivers/base/bus.c:532 device_add+0xb75/0xf60 drivers/base/core.c:3625 usb_set_configuration+0x1976/0x1fb0 drivers/usb/core/message.c:2211 usb_generic_driver_probe+0x88/0x140 drivers/usb/core/generic.c:238 usb_probe_device+0x134/0x270 drivers/usb/core/driver.c:293 really_probe+0x294/0xc30 drivers/base/dd.c:658 __driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:798 driver_probe_device+0x50/0x420 drivers/base/dd.c:828 __device_attach_driver+0x2d3/0x520 drivers/base/dd.c:956 bus_for_each_drv+0x24a/0x2d0 drivers/base/bus.c:457 __device_attach+0x32f/0x510 drivers/base/dd.c:1028 bus_probe_device+0x185/0x260 drivers/base/bus.c:532 device_add+0xb75/0xf60 drivers/base/core.c:3625 usb_new_device+0xb7e/0x18d0 drivers/usb/core/hub.c:2590 hub_port_connect drivers/usb/core/hub.c:5422 [inline] hub_port_connect_change drivers/usb/core/hub.c:5566 [inline] port_event drivers/usb/core/hub.c:5726 [inline] hub_event+0x2e9e/0x52c0 drivers/usb/core/hub.c:5808 process_one_work+0x92c/0x12c0 kernel/workqueue.c:2600 worker_thread+0xa63/0x1210 kernel/workqueue.c:2751 kthread+0x2b8/0x350 kernel/kthread.c:389 ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Freed by task 27585: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1792 [inline] slab_free_freelist_hook mm/slub.c:1818 [inline] slab_free mm/slub.c:3801 [inline] __kmem_cache_free+0x25f/0x3b0 mm/slub.c:3814 xpad_disconnect+0x359/0x490 drivers/input/joystick/xpad.c:2156 usb_unbind_interface+0x1d1/0x840 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:569 [inline] __device_release_driver drivers/base/dd.c:1270 [inline] device_release_driver_internal+0x4f9/0x7a0 drivers/base/dd.c:1293 bus_remove_device+0x341/0x410 drivers/base/bus.c:574 device_del+0x538/0x9c0 drivers/base/core.c:3814 usb_disable_device+0x3bf/0x850 drivers/usb/core/message.c:1420 usb_disconnect+0x340/0x8d0 drivers/usb/core/hub.c:2253 hub_port_connect drivers/usb/core/hub.c:5261 [inline] hub_port_connect_change drivers/usb/core/hub.c:5566 [inline] port_event drivers/usb/core/hub.c:5726 [inline] hub_event+0x1f25/0x52c0 drivers/usb/core/hub.c:5808 process_one_work+0x92c/0x12c0 kernel/workqueue.c:2600 worker_thread+0xa63/0x1210 kernel/workqueue.c:2751 kthread+0x2b8/0x350 kernel/kthread.c:389 ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xad/0xc0 mm/kasan/generic.c:492 insert_work+0x54/0x3d0 kernel/workqueue.c:1556 __queue_work+0xb37/0xf10 kernel/workqueue.c:1717 queue_work_on+0x14f/0x250 kernel/workqueue.c:1747 ops_exit_list net/core/net_namespace.c:170 [inline] setup_net+0x8c8/0xbb0 net/core/net_namespace.c:362 copy_net_ns+0x4e3/0x7a0 net/core/net_namespace.c:491 create_new_namespaces+0x425/0x7a0 kernel/nsproxy.c:110 copy_namespaces+0x399/0x410 kernel/nsproxy.c:179 copy_process+0x1af8/0x4290 kernel/fork.c:2507 kernel_clone+0x222/0x800 kernel/fork.c:2912 __do_sys_clone kernel/fork.c:3055 [inline] __se_sys_clone kernel/fork.c:3039 [inline] __x64_sys_clone+0x258/0x2a0 kernel/fork.c:3039 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88807e3f8800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 145 bytes inside of freed 1024-byte region [ffff88807e3f8800, ffff88807e3f8c00) The buggy address belongs to the physical page: page:ffffea0001f8fe00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7e3f8 head:ffffea0001f8fe00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000010200 ffff888012841dc0 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5057, tgid 5057 (syz-executor.3), ts 190975681186, free_ts 153970641166 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1570 prep_new_page mm/page_alloc.c:1577 [inline] get_page_from_freelist+0x31e8/0x3370 mm/page_alloc.c:3221 __alloc_pages+0x255/0x670 mm/page_alloc.c:4477 alloc_slab_page+0x6a/0x160 mm/slub.c:1862 allocate_slab mm/slub.c:2009 [inline] new_slab+0x84/0x2f0 mm/slub.c:2062 ___slab_alloc+0xade/0x1100 mm/slub.c:3215 __slab_alloc mm/slub.c:3314 [inline] __slab_alloc_node mm/slub.c:3367 [inline] slab_alloc_node mm/slub.c:3460 [inline] __kmem_cache_alloc_node+0x1af/0x270 mm/slub.c:3509 __do_kmalloc_node mm/slab_common.c:984 [inline] __kmalloc_node_track_caller+0xa5/0x230 mm/slab_common.c:1005 kmalloc_reserve+0xfe/0x240 net/core/skbuff.c:575 __alloc_skb+0x1b1/0x420 net/core/skbuff.c:644 alloc_skb include/linux/skbuff.h:1289 [inline] nlmsg_new include/net/netlink.h:1003 [inline] inet6_rt_notify+0xe0/0x290 net/ipv6/route.c:6171 fib6_add_rt2node net/ipv6/ip6_fib.c:1251 [inline] fib6_add+0x1dc4/0x3d40 net/ipv6/ip6_fib.c:1477 __ip6_ins_rt net/ipv6/route.c:1301 [inline] ip6_ins_rt+0x106/0x170 net/ipv6/route.c:1311 __ipv6_ifa_notify+0x5c0/0x11d0 net/ipv6/addrconf.c:6168 ipv6_ifa_notify net/ipv6/addrconf.c:6207 [inline] add_addr+0x2ce/0x480 net/ipv6/addrconf.c:3113 add_v4_addrs+0x8d3/0x1180 net/ipv6/addrconf.c:3172 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1161 [inline] free_unref_page_prepare+0x903/0xa30 mm/page_alloc.c:2348 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2443 __slab_free+0x2f6/0x390 mm/slub.c:3707 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook+0x6c/0x3b0 mm/slab.h:762 slab_alloc_node mm/slub.c:3470 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc+0x123/0x300 mm/slub.c:3494 mt_alloc_one lib/maple_tree.c:159 [inline] mas_alloc_nodes+0x276/0x800 lib/maple_tree.c:1282 mas_node_count_gfp lib/maple_tree.c:1362 [inline] mas_preallocate+0x131/0x350 lib/maple_tree.c:5547 vma_iter_prealloc mm/internal.h:1032 [inline] vma_expand+0x3b9/0x610 mm/mmap.c:666 mmap_region+0xaed/0x2310 mm/mmap.c:2716 do_mmap+0x8cf/0xf80 mm/mmap.c:1363 vm_mmap_pgoff+0x1db/0x410 mm/util.c:543 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff88807e3f8780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807e3f8800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88807e3f8880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88807e3f8900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88807e3f8980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== ---------------- Code disassembly (best guess): 0: 20 00 and %al,(%rax) 2: 00 0f add %cl,(%rdi) 4: 83 dc 00 sbb $0x0,%esp 7: 00 00 add %al,(%rax) 9: 49 81 fc c0 00 00 00 cmp $0xc0,%r12 10: 77 1a ja 0x2c 12: 4d 85 e4 test %r12,%r12 15: 0f 84 b2 00 00 00 je 0xcd 1b: 41 8d 44 24 ff lea -0x1(%r12),%eax 20: c1 e8 03 shr $0x3,%eax 23: 0f b6 80 d0 b4 c8 8c movzbl -0x73374b30(%rax),%eax * 2a: eb 15 jmp 0x41 <-- trapping instruction 2c: 41 8d 44 24 ff lea -0x1(%r12),%eax 31: 89 44 24 04 mov %eax,0x4(%rsp) 35: b8 ff ff ff ff mov $0xffffffff,%eax 3a: 0f bd 44 24 04 bsr 0x4(%rsp),%eax 3f: ff .byte 0xff --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
