================================================================== BUG: KASAN: use-after-free in hlist_move_list include/linux/list.h:1014 [inline] BUG: KASAN: use-after-free in collect_expired_timers kernel/time/timer.c:1576 [inline] BUG: KASAN: use-after-free in __run_timers+0x34a/0xa10 kernel/time/timer.c:1812 Write of size 8 at addr ffff88810d140a00 by task swapper/1/0 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.1.118-syzkaller-00073-ge50cf165f4e7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0x158/0x4e0 mm/kasan/report.c:427 kasan_report+0x13c/0x170 mm/kasan/report.c:531 __asan_report_store8_noabort+0x17/0x20 mm/kasan/report_generic.c:356 hlist_move_list include/linux/list.h:1014 [inline] collect_expired_timers kernel/time/timer.c:1576 [inline] __run_timers+0x34a/0xa10 kernel/time/timer.c:1812 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1839 handle_softirqs+0x1db/0x650 kernel/softirq.c:617 __do_softirq kernel/softirq.c:655 [inline] invoke_softirq kernel/softirq.c:472 [inline] __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:704 irq_exit_rcu+0x9/0x10 kernel/softirq.c:716 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:40 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:75 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline] RIP: 0010:acpi_idle_do_entry drivers/acpi/processor_idle.c:567 [inline] RIP: 0010:acpi_idle_enter+0x416/0x760 drivers/acpi/processor_idle.c:704 Code: 89 de 48 83 e6 08 31 ff e8 07 bc 53 fc 48 83 e3 08 0f 85 b1 00 00 00 0f 1f 44 00 00 e8 b3 b7 53 fc 0f 00 2d 9c 8c ce 00 fb f4 e9 e3 00 00 00 49 83 c7 04 4c 89 f8 48 c1 e8 03 42 0f b6 04 30 RSP: 0018:ffffc90000147c50 EFLAGS: 000002d3 RAX: ffffffff8521cefd RBX: 0000000000000000 RCX: ffff8881003a8000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000147c90 R08: ffffffff8521cee9 R09: ffffed1020075001 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffff888109f16804 R14: dffffc0000000000 R15: ffff888109a52064 cpuidle_enter_state+0x5eb/0x17f0 drivers/cpuidle/cpuidle.c:251 cpuidle_enter+0x5f/0xa0 drivers/cpuidle/cpuidle.c:369 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x3d1/0x580 kernel/sched/idle.c:303 cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:401 start_secondary+0xe3/0xf0 arch/x86/kernel/smpboot.c:281 secondary_startup_64_no_verify+0xce/0xdb Allocated by task 483: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:379 [inline] __kasan_kmalloc+0x9c/0xb0 mm/kasan/common.c:388 kasan_kmalloc include/linux/kasan.h:212 [inline] __do_kmalloc_node mm/slab_common.c:938 [inline] __kmalloc+0xb4/0x1e0 mm/slab_common.c:951 kmalloc include/linux/slab.h:562 [inline] kzalloc include/linux/slab.h:693 [inline] hci_alloc_dev_priv+0x27/0x1c00 net/bluetooth/hci_core.c:2435 hci_alloc_dev include/net/bluetooth/hci_core.h:1484 [inline] hci_uart_register_dev drivers/bluetooth/hci_ldisc.c:636 [inline] hci_uart_set_proto drivers/bluetooth/hci_ldisc.c:712 [inline] hci_uart_tty_ioctl+0x401/0xa70 drivers/bluetooth/hci_ldisc.c:765 tty_ioctl+0x903/0xc50 drivers/tty/tty_io.c:2785 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x114/0x190 fs/ioctl.c:856 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856 x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Freed by task 488: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0x131/0x180 mm/kasan/common.c:241 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:249 kasan_slab_free include/linux/kasan.h:178 [inline] slab_free_hook mm/slub.c:1745 [inline] slab_free_freelist_hook mm/slub.c:1771 [inline] slab_free mm/slub.c:3686 [inline] __kmem_cache_free+0x21d/0x410 mm/slub.c:3702 kfree+0x7a/0xf0 mm/slab_common.c:990 hci_release_dev+0x14d3/0x1640 net/bluetooth/hci_core.c:2763 bt_host_release+0x83/0xa0 net/bluetooth/hci_sysfs.c:92 device_release+0x95/0x1c0 kobject_cleanup lib/kobject.c:681 [inline] kobject_release lib/kobject.c:712 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x178/0x260 lib/kobject.c:729 put_device+0x1f/0x30 drivers/base/core.c:3805 hci_dev_put include/net/bluetooth/hci_core.h:1444 [inline] hci_dev_cmd+0x2be/0x9b0 net/bluetooth/hci_core.c:795 hci_sock_ioctl+0x415/0x7f0 net/bluetooth/hci_sock.c:1096 sock_do_ioctl+0x152/0x450 net/socket.c:1194 sock_ioctl+0x455/0x740 net/socket.c:1311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x114/0x190 fs/ioctl.c:856 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856 x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496 insert_work+0x56/0x310 kernel/workqueue.c:1368 __queue_work+0x9b6/0xd70 kernel/workqueue.c:1527 queue_work_on+0x105/0x170 kernel/workqueue.c:1555 queue_work include/linux/workqueue.h:510 [inline] hci_cmd_sync_run net/bluetooth/hci_sync.c:140 [inline] __hci_cmd_sync_sk+0xc2a/0xf70 net/bluetooth/hci_sync.c:162 __hci_cmd_sync_status_sk net/bluetooth/hci_sync.c:253 [inline] __hci_cmd_sync_status net/bluetooth/hci_sync.c:277 [inline] hci_cmd_sync_status+0x52/0x130 net/bluetooth/hci_sync.c:288 hci_dev_cmd+0x39e/0x9b0 net/bluetooth/hci_core.c:749 hci_sock_ioctl+0x415/0x7f0 net/bluetooth/hci_sock.c:1096 sock_do_ioctl+0x152/0x450 net/socket.c:1194 sock_ioctl+0x455/0x740 net/socket.c:1311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x114/0x190 fs/ioctl.c:856 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856 x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Second to last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496 insert_work+0x56/0x310 kernel/workqueue.c:1368 __queue_work+0x9b6/0xd70 kernel/workqueue.c:1527 queue_work_on+0x105/0x170 kernel/workqueue.c:1555 queue_work include/linux/workqueue.h:510 [inline] hci_cmd_sync_run net/bluetooth/hci_sync.c:140 [inline] __hci_cmd_sync_sk+0xc2a/0xf70 net/bluetooth/hci_sync.c:162 __hci_cmd_sync_status_sk net/bluetooth/hci_sync.c:253 [inline] __hci_cmd_sync_status net/bluetooth/hci_sync.c:277 [inline] hci_cmd_sync_status+0x52/0x130 net/bluetooth/hci_sync.c:288 hci_dev_cmd+0x39e/0x9b0 net/bluetooth/hci_core.c:749 hci_sock_ioctl+0x415/0x7f0 net/bluetooth/hci_sock.c:1096 sock_do_ioctl+0x152/0x450 net/socket.c:1194 sock_ioctl+0x455/0x740 net/socket.c:1311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x114/0x190 fs/ioctl.c:856 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856 x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 The buggy address belongs to the object at ffff88810d140000 which belongs to the cache kmalloc-8k of size 8192 The buggy address is located 2560 bytes inside of 8192-byte region [ffff88810d140000, ffff88810d142000) The buggy address belongs to the physical page: page:ffffea0004345000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10d140 head:ffffea0004345000 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 0000000000000000 dead000000000001 ffff888100043500 raw: 0000000000000000 0000000000020002 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 2250476732, free_ts 0 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x213/0x220 mm/page_alloc.c:2590 prep_new_page+0x1b/0x110 mm/page_alloc.c:2597 get_page_from_freelist+0x2f41/0x2fc0 mm/page_alloc.c:4462 __alloc_pages+0x234/0x610 mm/page_alloc.c:5759 alloc_slab_page+0x6c/0xf0 allocate_slab mm/slub.c:1962 [inline] new_slab+0x90/0x3e0 mm/slub.c:2015 ___slab_alloc+0x6f9/0xb80 mm/slub.c:3203 __slab_alloc+0x5d/0xa0 mm/slub.c:3302 slab_alloc_node mm/slub.c:3387 [inline] __kmem_cache_alloc_node+0x207/0x2a0 mm/slub.c:3462 __do_kmalloc_node mm/slab_common.c:937 [inline] __kmalloc_node+0xa3/0x1e0 mm/slab_common.c:945 kmalloc_node include/linux/slab.h:583 [inline] kvmalloc_node+0x221/0x640 mm/util.c:592 kvzalloc_node include/linux/slab.h:714 [inline] sbitmap_init_node+0x48b/0x5f0 lib/sbitmap.c:113 scsi_realloc_sdev_budget_map+0x2a3/0x450 drivers/scsi/scsi_scan.c:246 scsi_alloc_sdev+0x86c/0xb30 drivers/scsi/scsi_scan.c:357 scsi_probe_and_add_lun+0x17f/0x4070 drivers/scsi/scsi_scan.c:1188 __scsi_scan_target+0x20a/0xea0 drivers/scsi/scsi_scan.c:1724 page_owner free stack trace missing Memory state around the buggy address: ffff88810d140900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88810d140980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88810d140a00: fb fb fb fb fb fb fb fb fb fb ---------------- Code disassembly (best guess): 0: 89 de mov %ebx,%esi 2: 48 83 e6 08 and $0x8,%rsi 6: 31 ff xor %edi,%edi 8: e8 07 bc 53 fc call 0xfc53bc14 d: 48 83 e3 08 and $0x8,%rbx 11: 0f 85 b1 00 00 00 jne 0xc8 17: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 1c: e8 b3 b7 53 fc call 0xfc53b7d4 21: 0f 00 2d 9c 8c ce 00 verw 0xce8c9c(%rip) # 0xce8cc4 28: fb sti 29: f4 hlt * 2a: fa cli <-- trapping instruction 2b: e9 e3 00 00 00 jmp 0x113 30: 49 83 c7 04 add $0x4,%r15 34: 4c 89 f8 mov %r15,%rax 37: 48 c1 e8 03 shr $0x3,%rax 3b: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax