[ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.12' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 56.179384][ T7174] ------------[ cut here ]------------ [ 56.193207][ T7174] refcount_t: underflow; use-after-free. [ 56.194994][ T7184] ------------[ cut here ]------------ [ 56.206950][ T7184] refcount_t: saturated; leaking memory. [ 56.207341][ T7174] WARNING: CPU: 0 PID: 7174 at lib/refcount.c:28 refcount_warn_saturate+0x1d1/0x1e0 [ 56.213278][ T7184] WARNING: CPU: 1 PID: 7184 at lib/refcount.c:22 refcount_warn_saturate+0x12d/0x1e0 [ 56.221957][ T7174] Kernel panic - not syncing: panic_on_warn set ... [ 56.231303][ T7184] Modules linked in: [ 56.237873][ T7174] CPU: 0 PID: 7174 Comm: syz-executor413 Not tainted 5.6.0-syzkaller #0 [ 56.241750][ T7184] CPU: 1 PID: 7184 Comm: cryptomgr_probe Not tainted 5.6.0-syzkaller #0 [ 56.250039][ T7174] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.250048][ T7174] Call Trace: [ 56.258346][ T7184] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.258364][ T7184] RIP: 0010:refcount_warn_saturate+0x12d/0x1e0 [ 56.268412][ T7174] dump_stack+0x188/0x20d [ 56.271669][ T7184] Code: 06 31 ff 89 de e8 a3 83 e1 fd 84 db 0f 85 72 ff ff ff e8 66 82 e1 fd 48 c7 c7 40 c5 71 88 c6 05 28 be f1 06 01 e8 bb f6 b2 fd <0f> 0b e9 53 ff ff ff e8 47 82 e1 fd 0f b6 1d 0f be f1 06 31 ff 89 [ 56.281719][ T7174] ? refcount_warn_saturate+0x120/0x1e0 [ 56.287860][ T7184] RSP: 0018:ffffc900018c7d60 EFLAGS: 00010282 [ 56.292209][ T7174] panic+0x2e3/0x75c [ 56.311803][ T7184] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 56.317334][ T7174] ? add_taint.cold+0x16/0x16 [ 56.323377][ T7184] RDX: 0000000000000000 RSI: ffffffff815ca861 RDI: fffff52000318f9e [ 56.327294][ T7174] ? __probe_kernel_read+0x188/0x1d0 [ 56.335194][ T7184] RBP: 0000000000000001 R08: ffff888093a70580 R09: ffffed1015ce66a1 [ 56.335206][ T7184] R10: ffffed1015ce66a0 R11: ffff8880ae733507 R12: ffff88809a6d1848 [ 56.339864][ T7174] ? __warn.cold+0x14/0x35 [ 56.347814][ T7184] R13: 0000000000000000 R14: 000000000000240f R15: 0000000000000000 [ 56.353094][ T7174] ? __warn+0xd5/0x1c8 [ 56.361064][ T7184] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 56.369044][ T7174] ? refcount_warn_saturate+0x1d1/0x1e0 [ 56.373440][ T7184] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.381396][ T7174] __warn.cold+0x2f/0x35 [ 56.385436][ T7184] CR2: 000055badba313a8 CR3: 0000000093f85000 CR4: 00000000001406e0 [ 56.385448][ T7184] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.394383][ T7174] ? refcount_warn_saturate+0x1d1/0x1e0 [ 56.399919][ T7184] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.407543][ T7174] report_bug+0x27b/0x2f0 [ 56.411762][ T7184] Call Trace: [ 56.419734][ T7174] do_error_trap+0x12b/0x220 [ 56.427700][ T7184] crypto_mod_get+0xdd/0xf0 [ 56.433219][ T7174] ? refcount_warn_saturate+0x1d1/0x1e0 [ 56.441169][ T7184] __crypto_alg_lookup+0xed/0x3e0 [ 56.445478][ T7174] do_invalid_op+0x32/0x40 [ 56.448743][ T7184] crypto_alg_lookup+0x57/0x210 [ 56.453421][ T7174] ? refcount_warn_saturate+0x1d1/0x1e0 [ 56.457917][ T7184] crypto_alg_mod_lookup+0x6e/0x5b0 [ 56.463455][ T7174] invalid_op+0x23/0x30 [ 56.468471][ T7184] crypto_grab_spawn+0x82/0x3a0 [ 56.472871][ T7174] RIP: 0010:refcount_warn_saturate+0x1d1/0x1e0 [ 56.477716][ T7184] ? padata_alloc_shell+0x1c1/0x260 [ 56.483243][ T7174] Code: e9 db fe ff ff 48 89 df e8 2c 95 1e fe e9 8a fe ff ff e8 c2 81 e1 fd 48 c7 c7 40 c6 71 88 c6 05 82 bd f1 06 01 e8 17 f6 b2 fd <0f> 0b e9 af fe ff ff 0f 1f 84 00 00 00 00 00 41 56 41 55 41 54 55 [ 56.488436][ T7184] pcrypt_create+0x225/0x850 [ 56.492569][ T7174] RSP: 0018:ffffc90001a17b18 EFLAGS: 00010282 [ 56.497410][ T7184] ? crypto_alg_put+0xd0/0xd0 [ 56.503532][ T7174] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 56.508708][ T7184] cryptomgr_probe+0x79/0x1a0 [ 56.528293][ T7174] RDX: 0000000000000000 RSI: ffffffff815ca861 RDI: fffff52000342f55 [ 56.528307][ T7174] RBP: 0000000000000003 R08: ffff8880949fe300 R09: ffffed1015cc66a1 [ 56.532899][ T7184] ? crypto_alg_put+0xd0/0xd0 [ 56.538954][ T7174] R10: ffffed1015cc66a0 R11: ffff8880ae633507 R12: ffff88809a6d187c [ 56.538969][ T7174] R13: ffff8880a40eb000 R14: 0000000000000000 R15: ffff8880a40eb010 [ 56.543652][ T7184] kthread+0x388/0x470 [ 56.551640][ T7174] ? vprintk_func+0x81/0x17e [ 56.556316][ T7184] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.564302][ T7174] ? refcount_warn_saturate+0x1d1/0x1e0 [ 56.572273][ T7184] ret_from_fork+0x24/0x30 [ 56.576951][ T7174] crypto_destroy_tfm+0x2a1/0x310 [ 56.584914][ T7184] irq event stamp: 200 [ 56.592873][ T7174] ? crypto_aead_decrypt+0x180/0x180 [ 56.596918][ T7184] hardirqs last enabled at (199): [] _raw_spin_unlock_irq+0x1f/0x80 [ 56.601491][ T7174] crypto_destroy_tfm+0xb1/0x310 [ 56.607295][ T7184] hardirqs last disabled at (200): [] trace_hardirqs_off_thunk+0x1a/0x1c [ 56.607316][ T7184] softirqs last enabled at (168): [] __do_softirq+0x6ef/0x9f7 [ 56.612846][ T7174] ? __sock_release+0x280/0x280 [ 56.617243][ T7184] softirqs last disabled at (77): [] irq_exit+0x192/0x1d0 [ 56.617255][ T7184] ---[ end trace ee71f8444be8c254 ]--- [ 56.622268][ T7174] aead_release+0x2d/0x50 [ 56.688402][ T7174] alg_sock_destruct+0x85/0xe0 [ 56.693174][ T7174] ? af_alg_alloc_areq+0x1d0/0x1d0 [ 56.698319][ T7174] __sk_destruct+0x4b/0x7c0 [ 56.702837][ T7174] ? __sock_release+0x280/0x280 [ 56.707685][ T7174] sk_destruct+0xc6/0x100 [ 56.711998][ T7174] __sk_free+0xef/0x3d0 [ 56.716133][ T7174] sk_free+0x78/0xa0 [ 56.720007][ T7174] af_alg_release+0xdb/0x110 [ 56.724578][ T7174] __sock_release+0xcd/0x280 [ 56.729145][ T7174] sock_close+0x18/0x20 [ 56.733284][ T7174] __fput+0x2e9/0x860 [ 56.737247][ T7174] task_work_run+0xf4/0x1b0 [ 56.741831][ T7174] do_exit+0xb34/0x2dd0 [ 56.745965][ T7174] ? mm_update_next_owner+0x7a0/0x7a0 [ 56.751311][ T7174] ? up_read+0x1ab/0x750 [ 56.755529][ T7174] ? mark_held_locks+0x9f/0xe0 [ 56.760270][ T7174] ? down_read_nested+0x420/0x420 [ 56.765310][ T7174] ? handle_mm_fault+0x491/0xa10 [ 56.770239][ T7174] do_group_exit+0x125/0x340 [ 56.774806][ T7174] __x64_sys_exit_group+0x3a/0x50 [ 56.779811][ T7174] do_syscall_64+0xf6/0x7d0 [ 56.784315][ T7174] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 56.790182][ T7174] RIP: 0033:0x43ff78 [ 56.794092][ T7174] Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 [ 56.813680][ T7174] RSP: 002b:00007ffe423e1db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 56.822077][ T7174] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ff78 [ 56.830023][ T7174] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 56.837972][ T7174] RBP: 00000000004bf850 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 56.846013][ T7174] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000000001 [ 56.853960][ T7174] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 56.863291][ T7174] Kernel Offset: disabled [ 56.867665][ T7174] Rebooting in 86400 seconds..