watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [systemd-udevd:15155] Modules linked in: irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x1e4b/0x7580 kernel/fork.c:2063 softirqs last enabled at (0): [] copy_process+0x1e8c/0x7580 kernel/fork.c:2067 softirqs last disabled at (0): [<0000000000000000>] 0x0 CPU: 1 PID: 15155 Comm: systemd-udevd Not tainted 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:90 [inline] RIP: 0010:kvm_wait arch/x86/kernel/kvm.c:888 [inline] RIP: 0010:kvm_wait+0xaf/0xf0 arch/x86/kernel/kvm.c:871 Code: 10 c3 c3 89 74 24 0c 48 89 3c 24 e8 eb 27 48 00 8b 74 24 0c 48 8b 3c 24 eb 82 e8 fc 2c 48 00 eb 07 0f 00 2d 03 ad 55 08 fb f4 9b eb 07 0f 00 2d f6 ac 55 08 f4 eb c5 89 74 24 0c 48 89 3c 24 RSP: 0018:ffffc900177e7508 EFLAGS: 00000246 RAX: 0000000000000007 RBX: 0000000000000000 RCX: 1ffffffff1adba75 RDX: 0000000000000000 RSI: ffffffff817b7341 RDI: ffffffff813345f4 RBP: ffffffff8bb49c20 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff817b7328 R11: 0000000000000004 R12: 0000000000000000 R13: fffffbfff1769384 R14: 0000000000000001 R15: ffff8880b9d328c0 FS: 00007f9a4a42c8c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000300 CR3: 00000001ca814000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:597 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x8b8/0xb40 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x200/0x2b0 kernel/locking/spinlock_debug.c:115 spin_lock include/linux/spinlock.h:363 [inline] kernfs_put.part.0+0x269/0x540 fs/kernfs/dir.c:536 kernfs_put+0x42/0x50 fs/kernfs/dir.c:513 evict+0x2ed/0x6b0 fs/inode.c:586 iput_final fs/inode.c:1662 [inline] iput.part.0+0x539/0x850 fs/inode.c:1688 iput+0x58/0x70 fs/inode.c:1678 dentry_unlink_inode+0x2b1/0x460 fs/dcache.c:376 __dentry_kill+0x3c0/0x640 fs/dcache.c:582 dentry_kill fs/dcache.c:720 [inline] dput+0x66b/0xbc0 fs/dcache.c:888 lookup_fast+0x3d1/0x6d0 fs/namei.c:1623 walk_component+0xcf/0x6a0 fs/namei.c:1966 link_path_walk.part.0+0x757/0xd00 fs/namei.c:2297 link_path_walk fs/namei.c:2222 [inline] path_openat+0x265/0x2740 fs/namei.c:3555 do_filp_open+0x1aa/0x400 fs/namei.c:3586 do_sys_openat2+0x16d/0x4d0 fs/open.c:1200 do_sys_open fs/open.c:1216 [inline] __do_sys_open fs/open.c:1224 [inline] __se_sys_open fs/open.c:1220 [inline] __x64_sys_open+0x119/0x1c0 fs/open.c:1220 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f9a4929e6f0 Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 19 30 2c 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 fe 9d 01 00 48 89 04 24 RSP: 002b:00007ffe531bbf98 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000556564751c40 RCX: 00007f9a4929e6f0 RDX: 00000000000001b6 RSI: 0000000000080000 RDI: 00007ffe531bc140 RBP: 0000000000000008 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000080000 R11: 0000000000000246 R12: 0000556563b5f68a R13: 0000000000000001 R14: 0000556564755770 R15: 00007ffe531bc1b0 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 18661 Comm: syz-executor.1 Not tainted 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x55/0x180 mm/kasan/generic.c:189 Code: 86 05 01 00 00 49 83 e9 01 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 ca 48 c1 ed 03 49 c1 ea 03 48 01 c5 49 01 c2 48 89 e8 <49> 8d 5a 01 48 89 da 48 29 ea 48 83 fa 10 7e 63 41 89 eb 41 83 e3 RSP: 0018:ffffc90000007ce8 EFLAGS: 00000086 RAX: fffffbfff1adb412 RBX: 0000000000000000 RCX: ffffffff815a9d71 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d6da090 RBP: fffffbfff1adb412 R08: 0000000000000000 R09: ffffffff8d6da097 R10: fffffbfff1adb412 R11: 0000000000000000 R12: ffffffff8b97ce60 R13: 1aa61b5db54c36bb R14: ffff888016744ea0 R15: 1aa61b5db54c36bb FS: 00007f1b509bf700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33b21000 CR3: 00000001cd941000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] cpumask_test_cpu include/linux/cpumask.h:344 [inline] cpu_online include/linux/cpumask.h:895 [inline] trace_lock_release include/trace/events/lock.h:58 [inline] lock_release+0xa1/0x720 kernel/locking/lockdep.c:5636 rcu_lock_release include/linux/rcupdate.h:272 [inline] rcu_read_unlock include/linux/rcupdate.h:720 [inline] advance_sched+0x507/0x9a0 net/sched/sch_taprio.c:765 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:kasan_check_range+0x16/0x180 mm/kasan/generic.c:188 Code: 02 0f 1f 00 48 89 f2 be f8 00 00 00 e9 e3 85 3b 02 0f 1f 00 48 85 f6 0f 84 70 01 00 00 49 89 f9 41 54 44 0f b6 c2 49 01 f1 55 <53> 0f 82 18 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 0f 86 RSP: 0018:ffffc900096ce918 EFLAGS: 00000296 RAX: 0000000000000000 RBX: ffff888098b46600 RCX: ffffffff83f2e9aa RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888098b46828 RBP: 0000000000000014 R08: 0000000000000000 R09: ffff888098b46830 R10: ffffffff83f2f71e R11: 0000000000000000 R12: ffff888098b46828 R13: ffff888098b46828 R14: dffffc0000000000 R15: 0000000000000000 instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] tag_get lib/radix-tree.c:113 [inline] node_tag_clear+0x8a/0x240 lib/radix-tree.c:998 idr_alloc_u32+0x1e5/0x2c0 lib/idr.c:53 idr_alloc_cyclic+0x102/0x230 lib/idr.c:125 __kernfs_new_node+0x117/0x8b0 fs/kernfs/dir.c:591 kernfs_new_node+0x93/0x120 fs/kernfs/dir.c:647 __kernfs_create_file+0x51/0x350 fs/kernfs/file.c:985 sysfs_add_file_mode_ns+0x226/0x540 fs/sysfs/file.c:317 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x328/0xb20 fs/sysfs/group.c:149 internal_create_groups.part.0+0x90/0x140 fs/sysfs/group.c:189 internal_create_groups fs/sysfs/group.c:185 [inline] sysfs_create_groups+0x25/0x50 fs/sysfs/group.c:215 device_add_groups drivers/base/core.c:2435 [inline] device_add_attrs drivers/base/core.c:2583 [inline] device_add+0x82a/0x21b0 drivers/base/core.c:3304 netdev_register_kobject+0x181/0x430 net/core/net-sysfs.c:1955 register_netdevice+0xd33/0x1500 net/core/dev.c:10295 ppp_unit_register drivers/net/ppp/ppp_generic.c:1196 [inline] ppp_dev_configure+0xb29/0xea0 drivers/net/ppp/ppp_generic.c:1252 ppp_nl_newlink+0x2ba/0x310 drivers/net/ppp/ppp_generic.c:1323 __rtnl_newlink+0x106d/0x1750 net/core/rtnetlink.c:3458 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3506 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5572 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1b509bf188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe76e1a4af R14: 00007f1b509bf300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 10 c3 adc %al,%bl 2: c3 retq 3: 89 74 24 0c mov %esi,0xc(%rsp) 7: 48 89 3c 24 mov %rdi,(%rsp) b: e8 eb 27 48 00 callq 0x4827fb 10: 8b 74 24 0c mov 0xc(%rsp),%esi 14: 48 8b 3c 24 mov (%rsp),%rdi 18: eb 82 jmp 0xffffff9c 1a: e8 fc 2c 48 00 callq 0x482d1b 1f: eb 07 jmp 0x28 21: 0f 00 2d 03 ad 55 08 verw 0x855ad03(%rip) # 0x855ad2b 28: fb sti 29: f4 hlt * 2a: eb 9b jmp 0xffffffc7 <-- trapping instruction 2c: eb 07 jmp 0x35 2e: 0f 00 2d f6 ac 55 08 verw 0x855acf6(%rip) # 0x855ad2b 35: f4 hlt 36: eb c5 jmp 0xfffffffd 38: 89 74 24 0c mov %esi,0xc(%rsp) 3c: 48 89 3c 24 mov %rdi,(%rsp)