Warning: Permanently added '10.128.0.37' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 71.171841][ T8984] ------------[ cut here ]------------ [ 71.177317][ T8984] verifier backtracking bug [ 71.177428][ T8984] WARNING: CPU: 1 PID: 8984 at kernel/bpf/verifier.c:1785 __mark_chain_precision+0x19bb/0x1ee0 [ 71.192245][ T8984] Kernel panic - not syncing: panic_on_warn set ... [ 71.198830][ T8984] CPU: 1 PID: 8984 Comm: syz-executor774 Not tainted 5.2.0+ #88 [ 71.206437][ T8984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.216463][ T8984] Call Trace: [ 71.219729][ T8984] dump_stack+0x172/0x1f0 [ 71.224031][ T8984] ? __mark_chain_precision+0x18c0/0x1ee0 [ 71.229726][ T8984] panic+0x2dc/0x755 [ 71.233596][ T8984] ? add_taint.cold+0x16/0x16 [ 71.238252][ T8984] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.244479][ T8984] ? __warn.cold+0x5/0x4c [ 71.248797][ T8984] ? __warn+0xe7/0x1e0 [ 71.252850][ T8984] ? __mark_chain_precision+0x19bb/0x1ee0 [ 71.258543][ T8984] __warn.cold+0x20/0x4c [ 71.262759][ T8984] ? vprintk_emit+0x1ea/0x700 [ 71.267413][ T8984] ? __mark_chain_precision+0x19bb/0x1ee0 [ 71.273105][ T8984] report_bug+0x263/0x2b0 [ 71.277415][ T8984] do_error_trap+0x11b/0x200 [ 71.281996][ T8984] do_invalid_op+0x37/0x50 [ 71.286385][ T8984] ? __mark_chain_precision+0x19bb/0x1ee0 [ 71.292107][ T8984] invalid_op+0x14/0x20 [ 71.296245][ T8984] RIP: 0010:__mark_chain_precision+0x19bb/0x1ee0 [ 71.302543][ T8984] Code: 08 31 ff 89 de e8 d5 b2 f2 ff 84 db 0f 85 ce fe ff ff e8 88 b1 f2 ff 48 c7 c7 a0 78 91 87 c6 05 3e 2d 1f 08 01 e8 6d 5b c4 ff <0f> 0b 41 bc f2 ff ff ff e9 af fe ff ff e8 33 97 2c 00 e9 c2 e7 ff [ 71.322136][ T8984] RSP: 0018:ffff88808696f380 EFLAGS: 00010286 [ 71.328172][ T8984] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 71.336126][ T8984] RDX: 0000000000000000 RSI: ffffffff815c1016 RDI: ffffed1010d2de62 [ 71.344092][ T8984] RBP: ffff88808696f4d0 R08: ffff8880a828a040 R09: 0000000000000000 [ 71.352065][ T8984] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 71.360037][ T8984] R13: ffff88808c91e100 R14: 0000000000000001 R15: ffff8880a19955c0 [ 71.368020][ T8984] ? vprintk_func+0x86/0x189 [ 71.372596][ T8984] ? print_verifier_state+0x11b0/0x11b0 [ 71.378125][ T8984] ? __x64_sys_bpf+0x73/0xb0 [ 71.382689][ T8984] ? bpf_verifier_log_write+0x240/0x240 [ 71.388213][ T8984] ? check_reg_arg+0x1f1/0x480 [ 71.392955][ T8984] ? apparmor_capable+0x2ed/0x630 [ 71.397955][ T8984] check_cond_jmp_op+0xcd8/0x3c30 [ 71.402959][ T8984] ? find_held_lock+0x35/0x130 [ 71.407696][ T8984] ? fs_reclaim_acquire.part.0+0x30/0x30 [ 71.413311][ T8984] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.419547][ T8984] ? check_func_arg+0x11c0/0x11c0 [ 71.424566][ T8984] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.430799][ T8984] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.437013][ T8984] ? krealloc+0x7b/0xd0 [ 71.441174][ T8984] ? krealloc+0x7b/0xd0 [ 71.445307][ T8984] ? rcu_read_lock_sched_held+0x110/0x130 [ 71.451018][ T8984] ? kfree+0x28b/0x2c0 [ 71.455077][ T8984] ? krealloc+0x7b/0xd0 [ 71.459234][ T8984] ? push_jmp_history.isra.0+0x1a9/0x260 [ 71.464853][ T8984] do_check+0x6389/0x8a50 [ 71.469159][ T8984] ? find_held_lock+0x35/0x130 [ 71.473906][ T8984] ? check_helper_call+0x3210/0x3210 [ 71.479169][ T8984] ? kfree+0x226/0x2c0 [ 71.483210][ T8984] ? kvfree+0x61/0x70 [ 71.487161][ T8984] ? kfree+0x226/0x2c0 [ 71.491213][ T8984] ? lockdep_hardirqs_on+0x418/0x5d0 [ 71.496473][ T8984] ? trace_hardirqs_on+0x67/0x240 [ 71.501475][ T8984] ? kvfree+0x61/0x70 [ 71.505444][ T8984] bpf_check+0x6f99/0x9950 [ 71.509848][ T8984] ? do_check+0x8a50/0x8a50 [ 71.514333][ T8984] ? lock_downgrade+0x920/0x920 [ 71.519163][ T8984] ? ktime_get_with_offset+0x13a/0x360 [ 71.524601][ T8984] ? bpf_prog_load+0xdce/0x1670 [ 71.529431][ T8984] ? ktime_get_with_offset+0x13a/0x360 [ 71.534886][ T8984] ? lockdep_hardirqs_on+0x418/0x5d0 [ 71.540147][ T8984] ? trace_hardirqs_on+0x67/0x240 [ 71.545157][ T8984] ? memset+0x32/0x40 [ 71.549138][ T8984] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 71.555359][ T8984] ? bpf_obj_name_cpy+0x13f/0x190 [ 71.560364][ T8984] bpf_prog_load+0xe68/0x1670 [ 71.565018][ T8984] ? bpf_prog_new_fd+0x60/0x60 [ 71.569758][ T8984] ? lock_downgrade+0x920/0x920 [ 71.574616][ T8984] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 71.580847][ T8984] ? security_bpf+0x8b/0xc0 [ 71.585327][ T8984] __do_sys_bpf+0xa46/0x42f0 [ 71.589896][ T8984] ? bpf_prog_load+0x1670/0x1670 [ 71.594811][ T8984] ? lock_downgrade+0x920/0x920 [ 71.599644][ T8984] ? __kasan_check_write+0x14/0x20 [ 71.604757][ T8984] ? up_read+0x159/0x570 [ 71.608981][ T8984] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 71.614415][ T8984] ? do_syscall_64+0x26/0x6a0 [ 71.619084][ T8984] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.625125][ T8984] ? do_syscall_64+0x26/0x6a0 [ 71.629799][ T8984] __x64_sys_bpf+0x73/0xb0 [ 71.634191][ T8984] do_syscall_64+0xfd/0x6a0 [ 71.638686][ T8984] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.644580][ T8984] RIP: 0033:0x440369 [ 71.648452][ T8984] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 71.668034][ T8984] RSP: 002b:00007ffc4467b388 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 71.676433][ T8984] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440369 [ 71.684400][ T8984] RDX: 0000000000000048 RSI: 0000000020000200 RDI: 0000000000000005 [ 71.692354][ T8984] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 71.700305][ T8984] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000401bf0 [ 71.708294][ T8984] R13: 0000000000401c80 R14: 0000000000000000 R15: 0000000000000000 [ 71.717462][ T8984] Kernel Offset: disabled [ 71.721834][ T8984] Rebooting in 86400 seconds..