Warning: Permanently added '10.128.1.7' (ECDSA) to the list of known hosts. executing program [ 126.420599][ T32] audit: type=1400 audit(1595236924.576:8): avc: denied { execmem } for pid=8525 comm="syz-executor712" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 126.437043][ T8525] ===================================================== [ 126.448157][ T8525] BUG: KMSAN: uninit-value in crc32_le_base+0x4d2/0xd10 [ 126.455090][ T8525] CPU: 0 PID: 8525 Comm: syz-executor712 Not tainted 5.8.0-rc5-syzkaller #0 [ 126.463749][ T8525] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 126.473796][ T8525] Call Trace: [ 126.477183][ T8525] dump_stack+0x1df/0x240 [ 126.481516][ T8525] kmsan_report+0xf7/0x1e0 [ 126.485936][ T8525] __msan_warning+0x58/0xa0 [ 126.490439][ T8525] crc32_le_base+0x4d2/0xd10 [ 126.495025][ T8525] ? kmsan_internal_poison_shadow+0x9f/0xd0 [ 126.500921][ T8525] ? __kmalloc+0x2c1/0x460 [ 126.505330][ T8525] ? sock_kmalloc+0x157/0x2d0 [ 126.509998][ T8525] ? hash_sendpage+0x48c/0xdf0 [ 126.514757][ T8525] ? sock_sendpage+0x1e1/0x2c0 [ 126.519516][ T8525] ? pipe_to_sendpage+0x38c/0x4c0 [ 126.524545][ T8525] ? generic_splice_sendpage+0x1d5/0x2d0 [ 126.530171][ T8525] ? direct_splice_actor+0x1fd/0x580 [ 126.535455][ T8525] ? splice_direct_to_actor+0x6b2/0xf50 [ 126.540999][ T8525] ? do_splice_direct+0x342/0x580 [ 126.546017][ T8525] ? do_sendfile+0x101b/0x1d40 [ 126.550777][ T8525] ? __se_compat_sys_sendfile+0x301/0x3c0 [ 126.556493][ T8525] ? __do_fast_syscall_32+0x2aa/0x400 [ 126.561873][ T8525] crc32_digest+0xdc/0x140 [ 126.566288][ T8525] ? crc32_finup+0x120/0x120 [ 126.570875][ T8525] shash_ahash_digest+0x788/0x8a0 [ 126.575906][ T8525] shash_async_digest+0xbb/0x110 [ 126.580845][ T8525] crypto_ahash_op+0x1c6/0x6c0 [ 126.585603][ T8525] ? __kmalloc+0x115/0x460 [ 126.590015][ T8525] ? kmsan_get_metadata+0x11d/0x180 [ 126.595209][ T8525] ? kmsan_get_metadata+0x11d/0x180 [ 126.600403][ T8525] ? shash_async_finup+0x110/0x110 [ 126.605511][ T8525] ? shash_async_finup+0x110/0x110 [ 126.610625][ T8525] crypto_ahash_digest+0xdc/0x150 [ 126.615653][ T8525] hash_sendpage+0x9cc/0xdf0 [ 126.620246][ T8525] ? hash_recvmsg+0xd30/0xd30 [ 126.624934][ T8525] sock_sendpage+0x1e1/0x2c0 [ 126.629537][ T8525] pipe_to_sendpage+0x38c/0x4c0 [ 126.634384][ T8525] ? sock_fasync+0x250/0x250 [ 126.638983][ T8525] __splice_from_pipe+0x565/0xf00 [ 126.644006][ T8525] ? generic_splice_sendpage+0x2d0/0x2d0 [ 126.649652][ T8525] generic_splice_sendpage+0x1d5/0x2d0 [ 126.655124][ T8525] ? iter_file_splice_write+0x1800/0x1800 [ 126.660842][ T8525] direct_splice_actor+0x1fd/0x580 [ 126.665960][ T8525] ? kmsan_get_metadata+0x4f/0x180 [ 126.671073][ T8525] splice_direct_to_actor+0x6b2/0xf50 [ 126.676451][ T8525] ? do_splice_direct+0x580/0x580 [ 126.681493][ T8525] do_splice_direct+0x342/0x580 [ 126.687228][ T8525] do_sendfile+0x101b/0x1d40 [ 126.691843][ T8525] __se_compat_sys_sendfile+0x301/0x3c0 [ 126.697390][ T8525] ? kmsan_get_metadata+0x11d/0x180 [ 126.702584][ T8525] ? __ia32_sys_sendfile64+0x70/0x70 [ 126.707865][ T8525] __ia32_compat_sys_sendfile+0x56/0x70 [ 126.713411][ T8525] __do_fast_syscall_32+0x2aa/0x400 [ 126.718616][ T8525] do_fast_syscall_32+0x6b/0xd0 [ 126.723468][ T8525] do_SYSENTER_32+0x73/0x90 [ 126.727968][ T8525] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 126.734289][ T8525] RIP: 0023:0xf7fed549 [ 126.738343][ T8525] Code: Bad RIP value. [ 126.742399][ T8525] RSP: 002b:00000000ff83b9cc EFLAGS: 00000292 ORIG_RAX: 00000000000000bb [ 126.750803][ T8525] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000000006 [ 126.758762][ T8525] RDX: 0000000000000000 RSI: 0000000000000900 RDI: 0000000000000000 [ 126.766707][ T8525] RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 [ 126.774654][ T8525] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 126.782604][ T8525] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 126.790560][ T8525] [ 126.792869][ T8525] Uninit was created at: [ 126.797103][ T8525] kmsan_save_stack_with_flags+0x3c/0x90 [ 126.802717][ T8525] kmsan_alloc_page+0xb9/0x180 [ 126.807461][ T8525] __alloc_pages_nodemask+0x56a2/0x5dc0 [ 126.812979][ T8525] alloc_pages_current+0x672/0x990 [ 126.818064][ T8525] push_pipe+0x605/0xb70 [ 126.822279][ T8525] iov_iter_get_pages_alloc+0x18a9/0x21c0 [ 126.827972][ T8525] do_splice_to+0x4fc/0x14f0 [ 126.832536][ T8525] splice_direct_to_actor+0x45c/0xf50 [ 126.837889][ T8525] do_splice_direct+0x342/0x580 [ 126.842716][ T8525] do_sendfile+0x101b/0x1d40 [ 126.847278][ T8525] __se_compat_sys_sendfile+0x301/0x3c0 [ 126.852793][ T8525] __ia32_compat_sys_sendfile+0x56/0x70 [ 126.858331][ T8525] __do_fast_syscall_32+0x2aa/0x400 [ 126.863502][ T8525] do_fast_syscall_32+0x6b/0xd0 [ 126.868324][ T8525] do_SYSENTER_32+0x73/0x90 [ 126.872808][ T8525] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 126.879112][ T8525] ===================================================== [ 126.886014][ T8525] Disabling lock debugging due to kernel taint [ 126.892169][ T8525] Kernel panic - not syncing: panic_on_warn set ... [ 126.898764][ T8525] CPU: 0 PID: 8525 Comm: syz-executor712 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 126.908792][ T8525] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 126.918820][ T8525] Call Trace: [ 126.922093][ T8525] dump_stack+0x1df/0x240 [ 126.926412][ T8525] panic+0x3d5/0xc3e [ 126.930299][ T8525] kmsan_report+0x1df/0x1e0 [ 126.934785][ T8525] __msan_warning+0x58/0xa0 [ 126.939279][ T8525] crc32_le_base+0x4d2/0xd10 [ 126.943848][ T8525] ? kmsan_internal_poison_shadow+0x9f/0xd0 [ 126.949717][ T8525] ? __kmalloc+0x2c1/0x460 [ 126.954115][ T8525] ? sock_kmalloc+0x157/0x2d0 [ 126.958765][ T8525] ? hash_sendpage+0x48c/0xdf0 [ 126.963503][ T8525] ? sock_sendpage+0x1e1/0x2c0 [ 126.968282][ T8525] ? pipe_to_sendpage+0x38c/0x4c0 [ 126.973287][ T8525] ? generic_splice_sendpage+0x1d5/0x2d0 [ 126.978891][ T8525] ? direct_splice_actor+0x1fd/0x580 [ 126.984152][ T8525] ? splice_direct_to_actor+0x6b2/0xf50 [ 126.989669][ T8525] ? do_splice_direct+0x342/0x580 [ 126.994668][ T8525] ? do_sendfile+0x101b/0x1d40 [ 126.999406][ T8525] ? __se_compat_sys_sendfile+0x301/0x3c0 [ 127.005099][ T8525] ? __do_fast_syscall_32+0x2aa/0x400 [ 127.010448][ T8525] crc32_digest+0xdc/0x140 [ 127.014840][ T8525] ? crc32_finup+0x120/0x120 [ 127.019403][ T8525] shash_ahash_digest+0x788/0x8a0 [ 127.024408][ T8525] shash_async_digest+0xbb/0x110 [ 127.029370][ T8525] crypto_ahash_op+0x1c6/0x6c0 [ 127.034111][ T8525] ? __kmalloc+0x115/0x460 [ 127.038504][ T8525] ? kmsan_get_metadata+0x11d/0x180 [ 127.043686][ T8525] ? kmsan_get_metadata+0x11d/0x180 [ 127.048855][ T8525] ? shash_async_finup+0x110/0x110 [ 127.053948][ T8525] ? shash_async_finup+0x110/0x110 [ 127.059033][ T8525] crypto_ahash_digest+0xdc/0x150 [ 127.064034][ T8525] hash_sendpage+0x9cc/0xdf0 [ 127.068601][ T8525] ? hash_recvmsg+0xd30/0xd30 [ 127.073256][ T8525] sock_sendpage+0x1e1/0x2c0 [ 127.077824][ T8525] pipe_to_sendpage+0x38c/0x4c0 [ 127.082650][ T8525] ? sock_fasync+0x250/0x250 [ 127.087219][ T8525] __splice_from_pipe+0x565/0xf00 [ 127.092233][ T8525] ? generic_splice_sendpage+0x2d0/0x2d0 [ 127.097861][ T8525] generic_splice_sendpage+0x1d5/0x2d0 [ 127.103429][ T8525] ? iter_file_splice_write+0x1800/0x1800 [ 127.109120][ T8525] direct_splice_actor+0x1fd/0x580 [ 127.114207][ T8525] ? kmsan_get_metadata+0x4f/0x180 [ 127.119296][ T8525] splice_direct_to_actor+0x6b2/0xf50 [ 127.124637][ T8525] ? do_splice_direct+0x580/0x580 [ 127.129659][ T8525] do_splice_direct+0x342/0x580 [ 127.134492][ T8525] do_sendfile+0x101b/0x1d40 [ 127.139194][ T8525] __se_compat_sys_sendfile+0x301/0x3c0 [ 127.144805][ T8525] ? kmsan_get_metadata+0x11d/0x180 [ 127.149975][ T8525] ? __ia32_sys_sendfile64+0x70/0x70 [ 127.155233][ T8525] __ia32_compat_sys_sendfile+0x56/0x70 [ 127.160755][ T8525] __do_fast_syscall_32+0x2aa/0x400 [ 127.165933][ T8525] do_fast_syscall_32+0x6b/0xd0 [ 127.170757][ T8525] do_SYSENTER_32+0x73/0x90 [ 127.175234][ T8525] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 127.181534][ T8525] RIP: 0023:0xf7fed549 [ 127.185570][ T8525] Code: Bad RIP value. [ 127.189606][ T8525] RSP: 002b:00000000ff83b9cc EFLAGS: 00000292 ORIG_RAX: 00000000000000bb [ 127.197990][ T8525] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000000006 [ 127.205935][ T8525] RDX: 0000000000000000 RSI: 0000000000000900 RDI: 0000000000000000 [ 127.213880][ T8525] RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 [ 127.221824][ T8525] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 127.229770][ T8525] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 127.238342][ T8525] ------------[ cut here ]------------ [ 127.243776][ T8525] kernel BUG at mm/kmsan/kmsan.h:87! [ 127.249055][ T8525] invalid opcode: 0000 [#1] SMP [ 127.253879][ T8525] CPU: 0 PID: 8525 Comm: syz-executor712 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 127.263904][ T8525] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 127.274041][ T8525] RIP: 0010:kmsan_internal_check_memory+0x3c0/0x3d0 [ 127.280602][ T8525] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 ea 03 6a a4 31 c0 e8 81 fe 44 ff 0f 0b 0f 0b 0f 0b 0f 0b e8 32 3f 8c 0c 0f 0b <0f> 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 83 ff [ 127.300180][ T8525] RSP: 0018:ffff98b040dc2e28 EFLAGS: 00010046 [ 127.306215][ T8525] RAX: 0000000000000002 RBX: 00000000042100b1 RCX: 00000000042100b1 [ 127.314160][ T8525] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff98b040dc2f04 [ 127.322104][ T8525] RBP: ffff98b040dc2ed0 R08: 0000000000000000 R09: ffff91f9afc28210 [ 127.330049][ T8525] R10: 0000000000000000 R11: ffffffff9b402730 R12: 0000000000000000 [ 127.337992][ T8525] R13: 0000000000000001 R14: 0000000000000006 R15: 0000000000000001 [ 127.345937][ T8525] FS: 0000000000000000(0000) GS:ffff91f9afc00000(0063) knlGS:00000000087fa840 [ 127.354835][ T8525] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 127.361389][ T8525] CR2: 0000000020001850 CR3: 00000001124d3000 CR4: 00000000001406f0 [ 127.369332][ T8525] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 127.377276][ T8525] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 127.385224][ T8525] Call Trace: [ 127.388494][ T8525] kmsan_check_memory+0xd/0x10 [ 127.393232][ T8525] iowrite8+0x99/0x2e0 [ 127.397275][ T8525] pvpanic_panic_notify+0x99/0xc0 [ 127.402270][ T8525] ? pvpanic_mmio_remove+0x60/0x60 [ 127.407353][ T8525] atomic_notifier_call_chain+0x130/0x250 [ 127.413050][ T8525] panic+0x468/0xc3e [ 127.416930][ T8525] kmsan_report+0x1df/0x1e0 [ 127.421422][ T8525] __msan_warning+0x58/0xa0 [ 127.425898][ T8525] crc32_le_base+0x4d2/0xd10 [ 127.430460][ T8525] ? kmsan_internal_poison_shadow+0x9f/0xd0 [ 127.436324][ T8525] ? __kmalloc+0x2c1/0x460 [ 127.440725][ T8525] ? sock_kmalloc+0x157/0x2d0 [ 127.445376][ T8525] ? hash_sendpage+0x48c/0xdf0 [ 127.450111][ T8525] ? sock_sendpage+0x1e1/0x2c0 [ 127.454847][ T8525] ? pipe_to_sendpage+0x38c/0x4c0 [ 127.459845][ T8525] ? generic_splice_sendpage+0x1d5/0x2d0 [ 127.465446][ T8525] ? direct_splice_actor+0x1fd/0x580 [ 127.470701][ T8525] ? splice_direct_to_actor+0x6b2/0xf50 [ 127.476218][ T8525] ? do_splice_direct+0x342/0x580 [ 127.481213][ T8525] ? do_sendfile+0x101b/0x1d40 [ 127.485955][ T8525] ? __se_compat_sys_sendfile+0x301/0x3c0 [ 127.491649][ T8525] ? __do_fast_syscall_32+0x2aa/0x400 [ 127.496994][ T8525] crc32_digest+0xdc/0x140 [ 127.501392][ T8525] ? crc32_finup+0x120/0x120 [ 127.505958][ T8525] shash_ahash_digest+0x788/0x8a0 [ 127.510961][ T8525] shash_async_digest+0xbb/0x110 [ 127.515874][ T8525] crypto_ahash_op+0x1c6/0x6c0 [ 127.520633][ T8525] ? __kmalloc+0x115/0x460 [ 127.525027][ T8525] ? kmsan_get_metadata+0x11d/0x180 [ 127.530194][ T8525] ? kmsan_get_metadata+0x11d/0x180 [ 127.535378][ T8525] ? shash_async_finup+0x110/0x110 [ 127.540475][ T8525] ? shash_async_finup+0x110/0x110 [ 127.545560][ T8525] crypto_ahash_digest+0xdc/0x150 [ 127.550558][ T8525] hash_sendpage+0x9cc/0xdf0 [ 127.555123][ T8525] ? hash_recvmsg+0xd30/0xd30 [ 127.559772][ T8525] sock_sendpage+0x1e1/0x2c0 [ 127.564342][ T8525] pipe_to_sendpage+0x38c/0x4c0 [ 127.569189][ T8525] ? sock_fasync+0x250/0x250 [ 127.573756][ T8525] __splice_from_pipe+0x565/0xf00 [ 127.578753][ T8525] ? generic_splice_sendpage+0x2d0/0x2d0 [ 127.584374][ T8525] generic_splice_sendpage+0x1d5/0x2d0 [ 127.589813][ T8525] ? iter_file_splice_write+0x1800/0x1800 [ 127.595517][ T8525] direct_splice_actor+0x1fd/0x580 [ 127.600604][ T8525] ? kmsan_get_metadata+0x4f/0x180 [ 127.605707][ T8525] splice_direct_to_actor+0x6b2/0xf50 [ 127.611048][ T8525] ? do_splice_direct+0x580/0x580 [ 127.616057][ T8525] do_splice_direct+0x342/0x580 [ 127.620886][ T8525] do_sendfile+0x101b/0x1d40 [ 127.625548][ T8525] __se_compat_sys_sendfile+0x301/0x3c0 [ 127.631068][ T8525] ? kmsan_get_metadata+0x11d/0x180 [ 127.636239][ T8525] ? __ia32_sys_sendfile64+0x70/0x70 [ 127.641496][ T8525] __ia32_compat_sys_sendfile+0x56/0x70 [ 127.647018][ T8525] __do_fast_syscall_32+0x2aa/0x400 [ 127.652197][ T8525] do_fast_syscall_32+0x6b/0xd0 [ 127.657020][ T8525] do_SYSENTER_32+0x73/0x90 [ 127.661494][ T8525] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 127.667793][ T8525] RIP: 0023:0xf7fed549 [ 127.671827][ T8525] Code: Bad RIP value. [ 127.675864][ T8525] RSP: 002b:00000000ff83b9cc EFLAGS: 00000292 ORIG_RAX: 00000000000000bb [ 127.684245][ T8525] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000000006 [ 127.692204][ T8525] RDX: 0000000000000000 RSI: 0000000000000900 RDI: 0000000000000000 [ 127.700161][ T8525] RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 [ 127.708125][ T8525] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 127.716080][ T8525] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 127.724030][ T8525] Modules linked in: [ 127.727902][ T8525] ---[ end trace e92c916958757297 ]--- [ 127.733336][ T8525] RIP: 0010:kmsan_internal_check_memory+0x3c0/0x3d0 [ 127.739901][ T8525] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 ea 03 6a a4 31 c0 e8 81 fe 44 ff 0f 0b 0f 0b 0f 0b 0f 0b e8 32 3f 8c 0c 0f 0b <0f> 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 83 ff [ 127.759571][ T8525] RSP: 0018:ffff98b040dc2e28 EFLAGS: 00010046 [ 127.765610][ T8525] RAX: 0000000000000002 RBX: 00000000042100b1 RCX: 00000000042100b1 [ 127.773556][ T8525] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff98b040dc2f04 [ 127.781505][ T8525] RBP: ffff98b040dc2ed0 R08: 0000000000000000 R09: ffff91f9afc28210 [ 127.789453][ T8525] R10: 0000000000000000 R11: ffffffff9b402730 R12: 0000000000000000 [ 127.797396][ T8525] R13: 0000000000000001 R14: 0000000000000006 R15: 0000000000000001 [ 127.805342][ T8525] FS: 0000000000000000(0000) GS:ffff91f9afc00000(0063) knlGS:00000000087fa840 [ 127.814240][ T8525] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 127.820794][ T8525] CR2: 0000000020001850 CR3: 00000001124d3000 CR4: 00000000001406f0 [ 127.828739][ T8525] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 127.836682][ T8525] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 127.844625][ T8525] Kernel panic - not syncing: Fatal exception [ 127.851247][ T8525] Kernel Offset: 0x15000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 127.862850][ T8525] Rebooting in 86400 seconds..