./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor902490294 <...> Warning: Permanently added '10.128.0.200' (ECDSA) to the list of known hosts. execve("./syz-executor902490294", ["./syz-executor902490294"], 0x7ffcc3f38f50 /* 10 vars */) = 0 brk(NULL) = 0x555555b9e000 brk(0x555555b9ec40) = 0x555555b9ec40 arch_prctl(ARCH_SET_FS, 0x555555b9e300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor902490294", 4096) = 27 brk(0x555555bbfc40) = 0x555555bbfc40 brk(0x555555bc0000) = 0x555555bc0000 mprotect(0x7f3db34ab000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b9e5d0) = 3607 ./strace-static-x86_64: Process 3607 attached [pid 3607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3607] setpgid(0, 0) = 0 [pid 3607] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1000", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/dev/kvm", O_RDONLY) = 3 [pid 3607] ioctl(3, KVM_CREATE_VM, 0) = 4 [pid 3607] openat(AT_FDCWD, "/dev/bus/usb/007/001", O_RDONLY) = 5 [pid 3607] mmap(0x2000d000, 8192, PROT_GROWSDOWN, MAP_PRIVATE|MAP_FIXED|MAP_EXECUTABLE, 5, 0) = 0x2000d000 [pid 3607] ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=0, flags=0, guest_phys_addr=0, memory_size=536879104, userspace_addr=0x20000000}) = 0 [pid 3607] ioctl(4, KVM_CREATE_VCPU, 0) = 6 [pid 3607] ioctl(6, KVM_RUN, 0) = 0 [pid 3607] ioctl(6, KVM_RUN, 0) = -1 EFAULT (Bad address) [pid 3607] exit_group(0) = ? syzkaller login: [ 35.757629][ T3607] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. [pid 3607] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3607, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b9e5d0) = 3611 ./strace-static-x86_64: Process 3611 attached [pid 3611] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3611] setpgid(0, 0) = 0 [pid 3611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3611] write(3, "1000", 4) = 4 [pid 3611] close(3) = 0 [pid 3611] openat(AT_FDCWD, "/dev/kvm", O_RDONLY) = 3 [pid 3611] ioctl(3, KVM_CREATE_VM, 0) = 4 [pid 3611] openat(AT_FDCWD, "/dev/bus/usb/007/001", O_RDONLY) = 5 [pid 3611] mmap(0x2000d000, 8192, PROT_GROWSDOWN, MAP_PRIVATE|MAP_FIXED|MAP_EXECUTABLE, 5, 0) = 0x2000d000 [pid 3611] ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=0, flags=0, guest_phys_addr=0, memory_size=536879104, userspace_addr=0x20000000}) = 0 [pid 3611] ioctl(4, KVM_CREATE_VCPU, 0) = 6 [pid 3611] ioctl(6, KVM_RUN, 0) = 0 [pid 3611] ioctl(6, KVM_RUN, 0) = -1 EFAULT (Bad address) [pid 3611] exit_group(0) = ? [pid 3611] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3611, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b9e5d0) = 3614 ./strace-static-x86_64: Process 3614 attached [pid 3614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3614] setpgid(0, 0) = 0 [pid 3614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3614] write(3, "1000", 4) = 4 [pid 3614] close(3) = 0 [pid 3614] openat(AT_FDCWD, "/dev/kvm", O_RDONLY) = 3 [pid 3614] ioctl(3, KVM_CREATE_VM, 0) = 4 [pid 3614] openat(AT_FDCWD, "/dev/bus/usb/007/001", O_RDONLY) = 5 [pid 3614] mmap(0x2000d000, 8192, PROT_GROWSDOWN, MAP_PRIVATE|MAP_FIXED|MAP_EXECUTABLE, 5, 0) = 0x2000d000 [pid 3614] ioctl(4, KVM_SET_USER_MEMORY_REGION, {slot=0, flags=0, guest_phys_addr=0, memory_size=536879104, userspace_addr=0x20000000}) = 0 [pid 3614] ioctl(4, KVM_CREATE_VCPU, 0) = 6 [pid 3614] ioctl(6, KVM_RUN, 0) = 0 [pid 3614] ioctl(6, KVM_RUN, 0) = -1 EFAULT (Bad address) [pid 3614] exit_group(0) = ? [ 35.959999][ T3614] page:ffffea00007ca600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1f298 [ 35.970340][ T3614] head:ffffea00007ca600 order:3 compound_mapcount:0 compound_pincount:0 [ 35.978693][ T3614] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 35.986712][ T3614] raw: 00fff00000010200 ffffea0000784e00 dead000000000004 ffff888012042280 [ 35.995325][ T3614] raw: 0000000000000000 0000000080020002 00000001ffffffff 0000000000000000 [ 36.003915][ T3614] page dumped because: VM_BUG_ON_FOLIO(folio_test_slab(folio)) [ 36.011443][ T3614] page_owner tracks the page as allocated [ 36.017188][ T3614] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3186, tgid 3186 (dhcpcd), ts 19317175508, free_ts 19316241551 [ 36.038051][ T3614] get_page_from_freelist+0x72b/0x7a0 [ 36.043415][ T3614] __alloc_pages+0x259/0x560 [ 36.048038][ T3614] alloc_slab_page+0x70/0xf0 [ 36.052649][ T3614] allocate_slab+0x5e/0x520 [ 36.057201][ T3614] ___slab_alloc+0x42e/0xce0 [ 36.061791][ T3614] __kmalloc_node_track_caller+0x2c3/0x400 [ 36.067623][ T3614] __alloc_skb+0x11d/0x620 [ 36.072054][ T3614] nl80211_get_wiphy+0xbd/0x2c0 [ 36.076933][ T3614] genl_rcv_msg+0x11ca/0x1670 [ 36.081622][ T3614] netlink_rcv_skb+0x1f0/0x460 [ 36.086408][ T3614] genl_rcv+0x24/0x40 [ 36.090390][ T3614] netlink_unicast+0x7e7/0x9c0 [ 36.095179][ T3614] netlink_sendmsg+0x9b3/0xcd0 [ 36.099944][ T3614] ____sys_sendmsg+0x597/0x8e0 [ 36.104726][ T3614] __sys_sendmsg+0x28e/0x390 [ 36.109318][ T3614] do_syscall_64+0x2b/0x70 [ 36.113719][ T3614] page last free stack trace: [ 36.118416][ T3614] free_pcp_prepare+0x812/0x900 [ 36.123273][ T3614] free_unref_page+0x7d/0x630 [ 36.127984][ T3614] __unfreeze_partials+0x1ab/0x200 [ 36.133098][ T3614] put_cpu_partial+0x116/0x180 [ 36.137883][ T3614] qlist_free_all+0x2b/0x70 [ 36.142387][ T3614] kasan_quarantine_reduce+0x169/0x180 [ 36.147864][ T3614] __kasan_slab_alloc+0x2f/0xe0 [ 36.152712][ T3614] kmem_cache_alloc_node+0x1cc/0x350 [ 36.158019][ T3614] __alloc_skb+0xd5/0x620 [ 36.162352][ T3614] alloc_skb_with_frags+0xb4/0x780 [ 36.167483][ T3614] sock_alloc_send_pskb+0x930/0xa70 [ 36.172683][ T3614] unix_dgram_sendmsg+0x5b3/0x2050 [ 36.177829][ T3614] sock_write_iter+0x3d4/0x540 [ 36.182592][ T3614] do_iter_write+0x6f0/0xc50 [ 36.187227][ T3614] do_writev+0x27a/0x470 [ 36.191479][ T3614] do_syscall_64+0x2b/0x70 [ 36.196012][ T3614] ------------[ cut here ]------------ [ 36.201466][ T3614] kernel BUG at include/linux/memcontrol.h:478! [ 36.207738][ T3614] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 36.213814][ T3614] CPU: 0 PID: 3614 Comm: syz-executor902 Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0 [ 36.223874][ T3614] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 36.233915][ T3614] RIP: 0010:folio_memcg_rcu+0x17b/0x230 [ 36.239452][ T3614] Code: ff 4c 89 f0 48 25 ff 0f 00 00 74 20 e8 ee f3 c2 ff e9 1a ff ff ff e8 e4 f3 c2 ff 4c 89 f7 48 c7 c6 80 44 b9 8a e8 45 18 00 00 <0f> 0b 4c 89 f7 be 08 00 00 00 e8 86 8d 17 00 4c 89 f0 48 c1 e8 03 [ 36.259043][ T3614] RSP: 0018:ffffc90003e3f198 EFLAGS: 00010246 [ 36.265094][ T3614] RAX: b79cd99e905aa500 RBX: 0000000000000200 RCX: ffff88801cc99d80 [ 36.273052][ T3614] RDX: 0000000000000000 RSI: 000000000000ffff RDI: 000000000000ffff [ 36.281019][ T3614] RBP: dffffc0000000000 R08: ffffffff81e5c7df R09: fffff520007c7d91 [ 36.288991][ T3614] R10: fffff520007c7d91 R11: 1ffff920007c7d90 R12: 0000000000000000 [ 36.296945][ T3614] R13: 00fff00000010200 R14: ffffea00007ca600 R15: dffffc0000000000 [ 36.304913][ T3614] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 36.313849][ T3614] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.320426][ T3614] CR2: 00007f3db34b21f0 CR3: 0000000029195000 CR4: 00000000003526f0 [ 36.328394][ T3614] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.336359][ T3614] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.344324][ T3614] Call Trace: [ 36.347598][ T3614] [ 36.350524][ T3614] workingset_activation+0x8a/0x450 [ 36.355725][ T3614] folio_mark_accessed+0x3ea/0xb50 [ 36.360833][ T3614] __handle_changed_spte+0x122a/0x1540 [ 36.366287][ T3614] ? trace_kvm_mmu_get_page+0x260/0x260 [ 36.371823][ T3614] ? __lock_acquire+0x1f60/0x1f60 [ 36.376844][ T3614] ? rcu_read_lock_sched_held+0x5f/0x130 [ 36.382468][ T3614] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 36.388440][ T3614] ? rcu_read_lock_sched_held+0x5f/0x130 [ 36.394068][ T3614] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 36.400043][ T3614] ? print_irqtrace_events+0x220/0x220 [ 36.405497][ T3614] __handle_changed_spte+0x1098/0x1540 [ 36.410950][ T3614] ? trace_kvm_mmu_get_page+0x260/0x260 [ 36.416486][ T3614] ? update_blocked_averages+0x11c0/0x11c0 [ 36.422288][ T3614] ? trace_lock_release+0x7b/0x1a0 [ 36.427392][ T3614] ? lock_release+0x81/0x870 [ 36.431973][ T3614] ? kvm_sched_clock_read+0x14/0x40 [ 36.438031][ T3614] ? rcu_read_lock_sched_held+0x5f/0x130 [ 36.443662][ T3614] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 36.449638][ T3614] ? rcu_read_lock_sched_held+0x5f/0x130 [ 36.455261][ T3614] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 36.461234][ T3614] __tdp_mmu_set_spte+0x2f9/0xbe0 [ 36.466251][ T3614] ? kvm_tdp_mmu_zap_sp+0x2c0/0x2c0 [ 36.471439][ T3614] ? tdp_iter_restart+0x2b8/0x4a0 [ 36.476451][ T3614] ? kvm_mmu_reset_all_pte_masks+0x3a0/0x3a0 [ 36.482421][ T3614] ? rcu_read_lock_sched_held+0x5f/0x130 [ 36.488060][ T3614] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 36.494047][ T3614] ? tdp_mmu_iter_cond_resched+0xc0/0x3b0 [ 36.499776][ T3614] __tdp_mmu_zap_root+0x44b/0x680 [ 36.504803][ T3614] ? trace_lock_acquire+0x7f/0x1d0 [ 36.509926][ T3614] ? tdp_mmu_iter_cond_resched+0x3b0/0x3b0 [ 36.515734][ T3614] ? do_raw_write_lock+0x141/0x4e0 [ 36.520861][ T3614] tdp_mmu_zap_root+0x16f/0x2a0 [ 36.525726][ T3614] kvm_tdp_mmu_zap_all+0xe6/0x2d0 [ 36.530751][ T3614] kvm_mmu_zap_all+0x2bc/0x360 [ 36.535515][ T3614] ? __rmap_clear_dirty+0x420/0x420 [ 36.540713][ T3614] kvm_mmu_notifier_release+0x3e/0x80 [ 36.546084][ T3614] ? kvm_create_vm_debugfs+0x9d0/0x9d0 [ 36.551530][ T3614] __mmu_notifier_release+0x3fb/0x680 [ 36.556893][ T3614] ? lock_release+0x81/0x870 [ 36.561475][ T3614] ? __lock_acquire+0x1f60/0x1f60 [ 36.566504][ T3614] ? mmu_interval_read_begin+0x300/0x300 [ 36.572137][ T3614] ? trace_contention_end+0x4d/0x140 [ 36.577416][ T3614] ? __mutex_lock_common+0x45d/0x26c0 [ 36.582788][ T3614] exit_mmap+0xb4/0x530 [ 36.586952][ T3614] ? vm_brk+0x20/0x20 [ 36.590943][ T3614] ? uprobe_clear_state+0x283/0x2a0 [ 36.596143][ T3614] __mmput+0x111/0x3a0 [ 36.600208][ T3614] exit_mm+0x211/0x2f0 [ 36.604269][ T3614] ? coredump_task_exit+0x380/0x380 [ 36.609456][ T3614] ? taskstats_exit+0x3a0/0x910 [ 36.614299][ T3614] ? tty_audit_exit+0x14f/0x1f0 [ 36.619146][ T3614] do_exit+0x635/0x2280 [ 36.623318][ T3614] ? __lock_acquire+0x1f60/0x1f60 [ 36.628333][ T3614] ? mm_update_next_owner+0x6d0/0x6d0 [ 36.633691][ T3614] ? _raw_spin_lock_irq+0xdb/0x110 [ 36.638799][ T3614] do_group_exit+0x1fd/0x2b0 [ 36.643382][ T3614] __x64_sys_exit_group+0x3b/0x40 [ 36.648396][ T3614] do_syscall_64+0x2b/0x70 [ 36.652805][ T3614] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 36.658691][ T3614] RIP: 0033:0x7f3db343d0c9 [ 36.663095][ T3614] Code: Unable to access opcode bytes at 0x7f3db343d09f. [ 36.670096][ T3614] RSP: 002b:00007ffd0d4603c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 36.678499][ T3614] RAX: ffffffffffffffda RBX: 00007f3db34b1350 RCX: 00007f3db343d0c9 [ 36.686462][ T3614] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 36.694422][ T3614] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 00007ffd0d4605b8 [ 36.702382][ T3614] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3db34b1350 [ 36.710362][ T3614] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 36.718328][ T3614] [ 36.721334][ T3614] Modules linked in: [ 36.725266][ T3614] ---[ end trace 0000000000000000 ]--- [ 36.730721][ T3614] RIP: 0010:folio_memcg_rcu+0x17b/0x230 [ 36.736316][ T3614] Code: ff 4c 89 f0 48 25 ff 0f 00 00 74 20 e8 ee f3 c2 ff e9 1a ff ff ff e8 e4 f3 c2 ff 4c 89 f7 48 c7 c6 80 44 b9 8a e8 45 18 00 00 <0f> 0b 4c 89 f7 be 08 00 00 00 e8 86 8d 17 00 4c 89 f0 48 c1 e8 03 [ 36.755941][ T3614] RSP: 0018:ffffc90003e3f198 EFLAGS: 00010246 [ 36.761992][ T3614] RAX: b79cd99e905aa500 RBX: 0000000000000200 RCX: ffff88801cc99d80 [ 36.769969][ T3614] RDX: 0000000000000000 RSI: 000000000000ffff RDI: 000000000000ffff [ 36.777969][ T3614] RBP: dffffc0000000000 R08: ffffffff81e5c7df R09: fffff520007c7d91 [ 36.785983][ T3614] R10: fffff520007c7d91 R11: 1ffff920007c7d90 R12: 0000000000000000 [ 36.793989][ T3614] R13: 00fff00000010200 R14: ffffea00007ca600 R15: dffffc0000000000 [ 36.801968][ T3614] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 36.810937][ T3614] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.817538][ T3614] CR2: 00007f3db34b21f0 CR3: 0000000029195000 CR4: 00000000003526f0 [ 36.825528][ T3614] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.833497][ T3614] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.841499][ T3614] Kernel panic - not syncing: Fatal exception [ 36.847777][ T3614] Kernel Offset: disabled [ 36.852103][ T3614] Rebooting in 86400 seconds..