Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.186' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 77.527941][ T36] audit: type=1400 audit(1630670908.729:8): avc: denied { execmem } for pid=8433 comm="syz-executor291" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 77.532069][ T8433] ------------[ cut here ]------------ [ 77.554163][ T8433] WARNING: CPU: 1 PID: 8433 at mm/util.c:597 kvmalloc_node+0x111/0x120 [ 77.562434][ T8433] Modules linked in: [ 77.566320][ T8433] CPU: 1 PID: 8433 Comm: syz-executor291 Not tainted 5.14.0-syzkaller #0 [ 77.574760][ T8433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.584861][ T8433] RIP: 0010:kvmalloc_node+0x111/0x120 [ 77.590276][ T8433] Code: 01 00 00 00 4c 89 e7 e8 ed 11 0d 00 49 89 c5 e9 69 ff ff ff e8 90 55 d1 ff 41 89 ed 41 81 cd 00 20 01 00 eb 95 e8 7f 55 d1 ff <0f> 0b e9 4c ff ff ff 0f 1f 84 00 00 00 00 00 55 48 89 fd 53 e8 66 [ 77.609948][ T8433] RSP: 0018:ffffc90001977850 EFLAGS: 00010293 [ 77.616014][ T8433] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 77.624005][ T8433] RDX: ffff88802182c2c0 RSI: ffffffff81a3f651 RDI: 0000000000000003 [ 77.632007][ T8433] RBP: 0000000000002dc0 R08: 000000007fffffff R09: 0000000000000000 [ 77.640012][ T8433] R10: ffffffff81a3f60e R11: 0000000000000000 R12: 0000000200006d00 [ 77.647977][ T8433] R13: 0000000000000000 R14: 00000000ffffffff R15: ffff8880411f4000 [ 77.655971][ T8433] FS: 00000000011ae300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 77.664944][ T8433] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.671567][ T8433] CR2: 0000000020000140 CR3: 000000001774b000 CR4: 00000000001506e0 [ 77.679535][ T8433] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.687576][ T8433] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.695613][ T8433] Call Trace: [ 77.698888][ T8433] bpf_check+0x16ea/0xcac0 [ 77.704215][ T8433] ? lock_downgrade+0x6e0/0x6e0 [ 77.709059][ T8433] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 77.715661][ T8433] ? bpf_get_btf_vmlinux+0x10/0x10 [ 77.720863][ T8433] ? lock_acquire+0x442/0x510 [ 77.725548][ T8433] ? rcu_read_lock_sched_held+0xd/0x70 [ 77.731053][ T8433] ? lock_release+0x522/0x720 [ 77.735732][ T8433] ? lock_release+0x720/0x720 [ 77.740446][ T8433] ? lock_downgrade+0x6e0/0x6e0 [ 77.745295][ T8433] ? __might_fault+0xd3/0x180 [ 77.750009][ T8433] ? lock_downgrade+0x6e0/0x6e0 [ 77.754863][ T8433] ? __kasan_kmalloc+0xa1/0xd0 [ 77.759610][ T8433] ? rcu_read_lock_sched_held+0xd/0x70 [ 77.765095][ T8433] ? ktime_get_with_offset+0x3f2/0x500 [ 77.770601][ T8433] ? trace_hardirqs_on+0x5b/0x1c0 [ 77.775623][ T8433] ? memset+0x20/0x40 [ 77.779590][ T8433] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 77.785844][ T8433] ? bpf_obj_name_cpy+0x144/0x1a0 [ 77.790915][ T8433] ? bpf_prog_load+0xe16/0x21e0 [ 77.795758][ T8433] bpf_prog_load+0xe57/0x21e0 [ 77.800452][ T8433] ? fd_install+0x1f9/0x640 [ 77.804954][ T8433] ? __bpf_prog_put.constprop.0+0x220/0x220 [ 77.810877][ T8433] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.817115][ T8433] ? avc_has_perm+0x107/0x1b0 [ 77.821857][ T8433] ? selinux_bpf+0xe2/0x120 [ 77.826359][ T8433] ? security_bpf+0x83/0xb0 [ 77.830911][ T8433] __sys_bpf+0x67e/0x5df0 [ 77.835248][ T8433] ? bpf_link_get_from_fd+0x110/0x110 [ 77.840656][ T8433] ? vm_iomap_memory+0x190/0x190 [ 77.845594][ T8433] ? lock_release+0x720/0x720 [ 77.850302][ T8433] ? rcu_read_lock_sched_held+0xd/0x70 [ 77.855761][ T8433] ? rcu_read_lock_sched_held+0xd/0x70 [ 77.861249][ T8433] ? lock_acquire+0x442/0x510 [ 77.865924][ T8433] ? rcu_read_lock_sched_held+0xd/0x70 [ 77.871416][ T8433] ? lock_release+0x522/0x720 [ 77.876087][ T8433] ? trace_hardirqs_on+0x38/0x1c0 [ 77.881134][ T8433] __x64_sys_bpf+0x75/0xb0 [ 77.885548][ T8433] ? syscall_enter_from_user_mode+0x21/0x70 [ 77.891469][ T8433] do_syscall_64+0x35/0xb0 [ 77.895890][ T8433] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 77.901806][ T8433] RIP: 0033:0x43f0c9 [ 77.905692][ T8433] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 77.925335][ T8433] RSP: 002b:00007ffdceae7ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 77.933782][ T8433] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f0c9 [ 77.941802][ T8433] RDX: 0000000000000078 RSI: 0000000020000900 RDI: 0000000000000005 [ 77.949770][ T8433] RBP: 00000000004030b0 R08: 0000000000000000 R09: 0000000000400488 [ 77.957773][ T8433] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403140 [ 77.965802][ T8433] R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 [ 77.973920][ T8433] Kernel panic - not syncing: panic_on_warn set ... [ 77.980495][ T8433] CPU: 1 PID: 8433 Comm: syz-executor291 Not tainted 5.14.0-syzkaller #0 [ 77.988884][ T8433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.998915][ T8433] Call Trace: [ 78.002178][ T8433] dump_stack_lvl+0xcd/0x134 [ 78.006751][ T8433] panic+0x2b0/0x6dd [ 78.010625][ T8433] ? __warn_printk+0xf3/0xf3 [ 78.015195][ T8433] ? __warn.cold+0x1a/0x44 [ 78.019587][ T8433] ? kvmalloc_node+0x111/0x120 [ 78.024338][ T8433] __warn.cold+0x35/0x44 [ 78.028557][ T8433] ? kvmalloc_node+0x111/0x120 [ 78.033362][ T8433] report_bug+0x1bd/0x210 [ 78.037677][ T8433] handle_bug+0x3c/0x60 [ 78.041863][ T8433] exc_invalid_op+0x14/0x40 [ 78.046350][ T8433] asm_exc_invalid_op+0x12/0x20 [ 78.051183][ T8433] RIP: 0010:kvmalloc_node+0x111/0x120 [ 78.056541][ T8433] Code: 01 00 00 00 4c 89 e7 e8 ed 11 0d 00 49 89 c5 e9 69 ff ff ff e8 90 55 d1 ff 41 89 ed 41 81 cd 00 20 01 00 eb 95 e8 7f 55 d1 ff <0f> 0b e9 4c ff ff ff 0f 1f 84 00 00 00 00 00 55 48 89 fd 53 e8 66 [ 78.076130][ T8433] RSP: 0018:ffffc90001977850 EFLAGS: 00010293 [ 78.082190][ T8433] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 78.090149][ T8433] RDX: ffff88802182c2c0 RSI: ffffffff81a3f651 RDI: 0000000000000003 [ 78.098128][ T8433] RBP: 0000000000002dc0 R08: 000000007fffffff R09: 0000000000000000 [ 78.106093][ T8433] R10: ffffffff81a3f60e R11: 0000000000000000 R12: 0000000200006d00 [ 78.114054][ T8433] R13: 0000000000000000 R14: 00000000ffffffff R15: ffff8880411f4000 [ 78.122052][ T8433] ? kvmalloc_node+0xce/0x120 [ 78.126723][ T8433] ? kvmalloc_node+0x111/0x120 [ 78.131483][ T8433] bpf_check+0x16ea/0xcac0 [ 78.135888][ T8433] ? lock_downgrade+0x6e0/0x6e0 [ 78.140733][ T8433] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 78.146449][ T8433] ? bpf_get_btf_vmlinux+0x10/0x10 [ 78.151554][ T8433] ? lock_acquire+0x442/0x510 [ 78.156216][ T8433] ? rcu_read_lock_sched_held+0xd/0x70 [ 78.161673][ T8433] ? lock_release+0x522/0x720 [ 78.166352][ T8433] ? lock_release+0x720/0x720 [ 78.171038][ T8433] ? lock_downgrade+0x6e0/0x6e0 [ 78.175877][ T8433] ? __might_fault+0xd3/0x180 [ 78.180546][ T8433] ? lock_downgrade+0x6e0/0x6e0 [ 78.185386][ T8433] ? __kasan_kmalloc+0xa1/0xd0 [ 78.190141][ T8433] ? rcu_read_lock_sched_held+0xd/0x70 [ 78.195597][ T8433] ? ktime_get_with_offset+0x3f2/0x500 [ 78.201140][ T8433] ? trace_hardirqs_on+0x5b/0x1c0 [ 78.206171][ T8433] ? memset+0x20/0x40 [ 78.210149][ T8433] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 78.216389][ T8433] ? bpf_obj_name_cpy+0x144/0x1a0 [ 78.221406][ T8433] ? bpf_prog_load+0xe16/0x21e0 [ 78.226249][ T8433] bpf_prog_load+0xe57/0x21e0 [ 78.230917][ T8433] ? fd_install+0x1f9/0x640 [ 78.235414][ T8433] ? __bpf_prog_put.constprop.0+0x220/0x220 [ 78.241474][ T8433] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 78.247709][ T8433] ? avc_has_perm+0x107/0x1b0 [ 78.252394][ T8433] ? selinux_bpf+0xe2/0x120 [ 78.256889][ T8433] ? security_bpf+0x83/0xb0 [ 78.261381][ T8433] __sys_bpf+0x67e/0x5df0 [ 78.265707][ T8433] ? bpf_link_get_from_fd+0x110/0x110 [ 78.271069][ T8433] ? vm_iomap_memory+0x190/0x190 [ 78.276003][ T8433] ? lock_release+0x720/0x720 [ 78.280675][ T8433] ? rcu_read_lock_sched_held+0xd/0x70 [ 78.286132][ T8433] ? rcu_read_lock_sched_held+0xd/0x70 [ 78.291587][ T8433] ? lock_acquire+0x442/0x510 [ 78.296256][ T8433] ? rcu_read_lock_sched_held+0xd/0x70 [ 78.301719][ T8433] ? lock_release+0x522/0x720 [ 78.306396][ T8433] ? trace_hardirqs_on+0x38/0x1c0 [ 78.311413][ T8433] __x64_sys_bpf+0x75/0xb0 [ 78.315823][ T8433] ? syscall_enter_from_user_mode+0x21/0x70 [ 78.321713][ T8433] do_syscall_64+0x35/0xb0 [ 78.326136][ T8433] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 78.332026][ T8433] RIP: 0033:0x43f0c9 [ 78.335907][ T8433] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 78.355506][ T8433] RSP: 002b:00007ffdceae7ab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 78.363925][ T8433] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f0c9 [ 78.371886][ T8433] RDX: 0000000000000078 RSI: 0000000020000900 RDI: 0000000000000005 [ 78.379848][ T8433] RBP: 00000000004030b0 R08: 0000000000000000 R09: 0000000000400488 [ 78.387809][ T8433] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403140 [ 78.395770][ T8433] R13: 0000000000000000 R14: 00000000004ad018 R15: 0000000000400488 [ 78.405457][ T8433] Kernel Offset: disabled [ 78.409770][ T8433] Rebooting in 86400 seconds..