Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.23' (ECDSA) to the list of known hosts. 2021/04/22 07:03:12 fuzzer started 2021/04/22 07:03:13 dialing manager at 10.128.0.169:37457 2021/04/22 07:03:13 syscalls: 1690 2021/04/22 07:03:13 code coverage: enabled 2021/04/22 07:03:13 comparison tracing: enabled 2021/04/22 07:03:13 extra coverage: enabled 2021/04/22 07:03:13 setuid sandbox: enabled 2021/04/22 07:03:13 namespace sandbox: enabled 2021/04/22 07:03:13 Android sandbox: /sys/fs/selinux/policy does not exist 2021/04/22 07:03:13 fault injection: enabled 2021/04/22 07:03:13 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/04/22 07:03:13 net packet injection: enabled 2021/04/22 07:03:13 net device setup: enabled 2021/04/22 07:03:13 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/04/22 07:03:13 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/04/22 07:03:13 USB emulation: enabled 2021/04/22 07:03:13 hci packet injection: enabled 2021/04/22 07:03:13 wifi device emulation: enabled 2021/04/22 07:03:13 802.15.4 emulation: enabled 2021/04/22 07:03:13 fetching corpus: 0, signal 0/2000 (executing program) 2021/04/22 07:03:13 fetching corpus: 50, signal 35603/39034 (executing program) 2021/04/22 07:03:13 fetching corpus: 100, signal 54545/59270 (executing program) 2021/04/22 07:03:13 fetching corpus: 150, signal 66422/72343 (executing program) 2021/04/22 07:03:14 fetching corpus: 200, signal 73839/80927 (executing program) 2021/04/22 07:03:14 fetching corpus: 250, signal 80389/88619 (executing program) syzkaller login: [ 67.337072][ T8394] BUG: unable to handle page fault for address: 00000d20ffffea08 [ 67.344962][ T8394] #PF: supervisor read access in kernel mode [ 67.350951][ T8394] #PF: error_code(0x0000) - not-present page [ 67.356944][ T8394] PGD 0 P4D 0 [ 67.360336][ T8394] Oops: 0000 [#1] PREEMPT SMP KASAN [ 67.366543][ T8394] CPU: 1 PID: 8394 Comm: syz-fuzzer Not tainted 5.12.0-rc7-syzkaller #0 [ 67.375585][ T8394] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.385743][ T8394] RIP: 0010:stack_depot_save+0x12b/0x4e0 [ 67.391446][ T8394] Code: 05 6a e9 2f 0c 89 da 81 e2 ff ff 0f 00 4c 8d 3c d0 4d 8b 37 4d 85 f6 75 11 e9 94 00 00 00 4d 8b 36 4d 85 f6 0f 84 88 00 00 00 <41> 39 5e 08 75 ee 45 3b 66 0c 75 e8 31 c0 49 8b 4c c6 18 48 39 4c [ 67.411348][ T8394] RSP: 0018:ffffc9000163f3d0 EFLAGS: 00010206 [ 67.417595][ T8394] RAX: ffff88823b000000 RBX: 000000005cad657a RCX: 0000000000000003 [ 67.425851][ T8394] RDX: 00000000000d657a RSI: 0000000000000800 RDI: 000000003324e6b1 [ 67.433936][ T8394] RBP: ffffc9000163f440 R08: 00000000cf5c0c2d R09: 0000000000000000 [ 67.441923][ T8394] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000015 [ 67.450621][ T8394] R13: 0000000000000015 R14: 00000d20ffffea00 R15: ffff88823b6b2bd0 [ 67.460517][ T8394] FS: 000000c00002e490(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 67.469483][ T8394] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.476083][ T8394] CR2: 00000d20ffffea08 CR3: 0000000013226000 CR4: 00000000001506e0 [ 67.484078][ T8394] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.492070][ T8394] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.500789][ T8394] Call Trace: [ 67.504099][ T8394] ? kmem_cache_free+0x8a/0x740 [ 67.508977][ T8394] kasan_save_stack+0x32/0x40 [ 67.513875][ T8394] ? kasan_save_stack+0x1b/0x40 [ 67.518744][ T8394] ? kasan_set_track+0x1c/0x30 [ 67.523553][ T8394] ? kasan_set_free_info+0x20/0x30 [ 67.528685][ T8394] ? __kasan_slab_free+0xf5/0x130 [ 67.533727][ T8394] ? slab_free_freelist_hook+0x92/0x210 [ 67.539294][ T8394] ? kmem_cache_free+0x8a/0x740 [ 67.544171][ T8394] ? kfree_skbmem+0xef/0x1b0 [ 67.548965][ T8394] ? kfree_skb_partial+0x8b/0xa0 [ 67.554023][ T8394] ? tcp_data_queue+0x20b6/0x4b10 [ 67.559084][ T8394] ? tcp_rcv_established+0x841/0x1eb0 [ 67.564567][ T8394] ? tcp_v4_do_rcv+0x5d1/0x870 [ 67.569453][ T8394] ? __release_sock+0x134/0x3b0 [ 67.574442][ T8394] ? release_sock+0x54/0x1b0 [ 67.579069][ T8394] ? tcp_recvmsg+0x13f/0x550 [ 67.583679][ T8394] ? inet_recvmsg+0x11b/0x5d0 [ 67.588372][ T8394] ? sock_read_iter+0x33c/0x470 [ 67.593330][ T8394] ? new_sync_read+0x5b7/0x6e0 [ 67.598116][ T8394] ? vfs_read+0x35c/0x570 [ 67.603073][ T8394] ? ksys_read+0x1ee/0x250 [ 67.607519][ T8394] ? do_syscall_64+0x2d/0x70 [ 67.612164][ T8394] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 67.618263][ T8394] ? find_held_lock+0x2d/0x110 [ 67.623053][ T8394] ? debug_check_no_obj_freed+0x20c/0x420 [ 67.629161][ T8394] ? mark_held_locks+0x9f/0xe0 [ 67.634260][ T8394] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 67.640083][ T8394] ? lockdep_hardirqs_on+0x79/0x100 [ 67.645303][ T8394] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 67.651222][ T8394] ? debug_check_no_obj_freed+0x20c/0x420 [ 67.657053][ T8394] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 67.663315][ T8394] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 67.669690][ T8394] kasan_set_track+0x1c/0x30 [ 67.674318][ T8394] kasan_set_free_info+0x20/0x30 [ 67.679283][ T8394] __kasan_slab_free+0xf5/0x130 [ 67.684159][ T8394] slab_free_freelist_hook+0x92/0x210 [ 67.689556][ T8394] kmem_cache_free+0x8a/0x740 [ 67.694361][ T8394] ? kfree_skbmem+0xef/0x1b0 [ 67.698973][ T8394] ? skb_release_data+0x622/0x750 [ 67.704045][ T8394] kfree_skbmem+0xef/0x1b0 [ 67.708492][ T8394] kfree_skb_partial+0x8b/0xa0 [ 67.713301][ T8394] tcp_data_queue+0x20b6/0x4b10 [ 67.718382][ T8394] ? tcp_data_ready+0x540/0x540 [ 67.723270][ T8394] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 67.729022][ T8394] ? ktime_get+0x30b/0x470 [ 67.733467][ T8394] tcp_rcv_established+0x841/0x1eb0 [ 67.738693][ T8394] ? tcp_data_queue+0x4b10/0x4b10 [ 67.743742][ T8394] ? mark_held_locks+0x9f/0xe0 [ 67.748529][ T8394] tcp_v4_do_rcv+0x5d1/0x870 [ 67.753138][ T8394] __release_sock+0x134/0x3b0 [ 67.758974][ T8394] release_sock+0x54/0x1b0 [ 67.763410][ T8394] tcp_recvmsg+0x13f/0x550 [ 67.768864][ T8394] ? tcp_recvmsg_locked+0x22f0/0x22f0 [ 67.779596][ T8394] ? aa_sk_perm+0x31b/0xab0 [ 67.784498][ T8394] inet_recvmsg+0x11b/0x5d0 [ 67.789028][ T8394] ? inet_sendpage+0x140/0x140 [ 67.793910][ T8394] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 67.800193][ T8394] ? security_socket_recvmsg+0x8f/0xc0 [ 67.805670][ T8394] sock_read_iter+0x33c/0x470 [ 67.810441][ T8394] ? ____sys_recvmsg+0x600/0x600 [ 67.815402][ T8394] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 67.821670][ T8394] ? fsnotify+0xa16/0x1070 [ 67.826197][ T8394] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 67.832466][ T8394] new_sync_read+0x5b7/0x6e0 [ 67.837083][ T8394] ? ksys_lseek+0x1b0/0x1b0 [ 67.841644][ T8394] vfs_read+0x35c/0x570 [ 67.845825][ T8394] ksys_read+0x1ee/0x250 [ 67.850087][ T8394] ? vfs_write+0xa30/0xa30 [ 67.854539][ T8394] ? syscall_enter_from_user_mode+0x27/0x70 [ 67.860539][ T8394] do_syscall_64+0x2d/0x70 [ 67.865414][ T8394] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 67.871609][ T8394] RIP: 0033:0x4af19b [ 67.875526][ T8394] Code: fb ff eb bd e8 a6 b6 fb ff e9 61 ff ff ff cc e8 9b 82 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 67.895160][ T8394] RSP: 002b:000000c00030d850 EFLAGS: 00000206 ORIG_RAX: 0000000000000000 [ 67.903607][ T8394] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b [ 67.911592][ T8394] RDX: 0000000000001000 RSI: 000000c0000b6000 RDI: 0000000000000006 [ 67.919573][ T8394] RBP: 000000c00030d8a0 R08: 0000000000000001 R09: 0000000000000002 [ 67.927553][ T8394] R10: 0000000000003cc8 R11: 0000000000000206 R12: 0000000000003cc4 [ 67.936158][ T8394] R13: 0000000000000200 R14: 0000000000000002 R15: 0000000000000002 [ 67.944227][ T8394] Modules linked in: [ 67.948124][ T8394] CR2: 00000d20ffffea08 [ 67.956317][ T8394] ---[ end trace 7ec5d3e0f9283607 ]--- [ 67.961811][ T8394] RIP: 0010:stack_depot_save+0x12b/0x4e0 [ 67.967539][ T8394] Code: 05 6a e9 2f 0c 89 da 81 e2 ff ff 0f 00 4c 8d 3c d0 4d 8b 37 4d 85 f6 75 11 e9 94 00 00 00 4d 8b 36 4d 85 f6 0f 84 88 00 00 00 <41> 39 5e 08 75 ee 45 3b 66 0c 75 e8 31 c0 49 8b 4c c6 18 48 39 4c [ 67.987276][ T8394] RSP: 0018:ffffc9000163f3d0 EFLAGS: 00010206 [ 67.993392][ T8394] RAX: ffff88823b000000 RBX: 000000005cad657a RCX: 0000000000000003 [ 68.001845][ T8394] RDX: 00000000000d657a RSI: 0000000000000800 RDI: 000000003324e6b1 [ 68.009901][ T8394] RBP: ffffc9000163f440 R08: 00000000cf5c0c2d R09: 0000000000000000 [ 68.017991][ T8394] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000015 [ 68.018008][ T8394] R13: 0000000000000015 R14: 00000d20ffffea00 R15: ffff88823b6b2bd0 [ 68.018023][ T8394] FS: 000000c00002e490(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 68.018046][ T8394] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.018062][ T8394] CR2: 00007fc272ae3000 CR3: 0000000013226000 CR4: 00000000001506e0 [ 68.018076][ T8394] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.018089][ T8394] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.018104][ T8394] Kernel panic - not syncing: Fatal exception [ 68.081017][ T8394] Kernel Offset: disabled [ 68.085358][ T8394] Rebooting in 86400 seconds..