================================================================== BUG: KASAN: stack-out-of-bounds in profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42 Read of size 8 at addr ffffc90002cf7140 by task syz-executor/3511 CPU: 0 PID: 3511 Comm: syz-executor Not tainted 5.15.161-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42 profile_tick+0xd4/0x130 kernel/profile.c:416 tick_sched_handle kernel/time/tick-sched.c:255 [inline] tick_sched_timer+0x390/0x550 kernel/time/tick-sched.c:1473 __run_hrtimer kernel/time/hrtimer.c:1686 [inline] __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1750 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 62 6c a2 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 57 ac 2f f7 65 8b 05 d8 b2 da 75 85 c0 74 3f 48 c7 04 24 0e 36 RSP: 0018:ffffc90002cf7140 EFLAGS: 00000206 RAX: e9d957f4c9223200 RBX: 1ffff9200059ee2c RCX: ffffffff81631688 RDX: dffffc0000000000 RSI: ffffffff8a8b2a00 RDI: 0000000000000001 RBP: ffffc90002cf71d0 R08: dffffc0000000000 R09: fffffbfff1f7f21d R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff9200059ee28 R14: ffffc90002cf7160 R15: 0000000000000246 debug_rcu_head_queue kernel/rcu/rcu.h:177 [inline] __call_rcu kernel/rcu/tree.c:2991 [inline] call_rcu+0xb1/0xa70 kernel/rcu/tree.c:3087 __dentry_kill+0x436/0x650 fs/dcache.c:582 dentry_kill+0xbb/0x290 dput+0xd8/0x1a0 fs/dcache.c:889 find_next_child fs/libfs.c:264 [inline] simple_recursive_removal+0x263/0x850 fs/libfs.c:279 debugfs_remove+0x45/0x60 fs/debugfs/inode.c:745 ieee80211_debugfs_remove_netdev+0x4d/0xa0 net/mac80211/debugfs_netdev.c:851 ieee80211_teardown_sdata net/mac80211/iface.c:687 [inline] ieee80211_if_change_type+0x162/0x9f0 net/mac80211/iface.c:1744 ieee80211_change_iface+0x57/0x430 net/mac80211/cfg.c:160 rdev_change_virtual_intf net/wireless/rdev-ops.h:69 [inline] cfg80211_change_iface+0x789/0xf20 net/wireless/util.c:1074 nl80211_set_interface+0x5f7/0x890 net/wireless/nl80211.c:3949 genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline] genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0xfbd/0x14a0 net/netlink/genetlink.c:792 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2508 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x7b6/0x980 net/netlink/af_netlink.c:1356 netlink_sendmsg+0xa30/0xd60 net/netlink/af_netlink.c:1924 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] __sys_sendto+0x564/0x720 net/socket.c:2058 __do_sys_sendto net/socket.c:2070 [inline] __se_sys_sendto net/socket.c:2066 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2066 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f195b7dc92c Code: 2a 5a 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 70 5a 02 00 48 8b RSP: 002b:00007fff56984eb0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f195c499620 RCX: 00007f195b7dc92c RDX: 0000000000000024 RSI: 00007f195c499670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007fff56984f04 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f195c499670 R15: 0000000000000000 addr ffffc90002cf7140 is located in stack of task syz-executor/3511 at offset 0 in frame: _raw_spin_unlock_irqrestore+0x0/0x130 this frame has 1 object: [32, 40) 'flags.i.i.i.i' Memory state around the buggy address: ffffc90002cf7000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90002cf7080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffc90002cf7100: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3 ^ ffffc90002cf7180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90002cf7200: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f2 f2 f2 ================================================================== ---------------- Code disassembly (best guess): 0: 9c pushf 1: 8f 44 24 20 pop 0x20(%rsp) 5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1) a: 74 08 je 0x14 c: 4c 89 f7 mov %r14,%rdi f: e8 62 6c a2 f7 call 0xf7a26c76 14: f6 44 24 21 02 testb $0x2,0x21(%rsp) 19: 75 4e jne 0x69 1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d 22: 74 01 je 0x25 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 57 ac 2f f7 call 0xf72fac86 <-- trapping instruction 2f: 65 8b 05 d8 b2 da 75 mov %gs:0x75dab2d8(%rip),%eax # 0x75dab30e 36: 85 c0 test %eax,%eax 38: 74 3f je 0x79 3a: 48 rex.W 3b: c7 .byte 0xc7 3c: 04 24 add $0x24,%al 3e: 0e (bad) 3f: 36 ss