Warning: Permanently added '10.128.1.54' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 78.054639][ T8426] ------------[ cut here ]------------ [ 78.060495][ T8426] unsafe follow_pfn usage [ 78.064888][ T8426] WARNING: CPU: 1 PID: 8426 at mm/memory.c:4807 unsafe_follow_pfn+0x20f/0x260 [ 78.075195][ T8426] Modules linked in: [ 78.079275][ T8426] CPU: 0 PID: 8426 Comm: syz-executor677 Not tainted 5.12.0-rc4-next-20210326-syzkaller #0 [ 78.089439][ T8426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.100722][ T8426] RIP: 0010:unsafe_follow_pfn+0x20f/0x260 [ 78.106493][ T8426] Code: 8b 7c 24 20 49 89 6d 00 e8 6e 84 64 07 e9 30 ff ff ff e8 f4 19 cb ff 48 c7 c7 40 1f 76 89 c6 05 56 eb 09 0c 01 e8 34 1a 21 07 <0f> 0b e9 71 fe ff ff 41 bc ea ff ff ff e9 06 ff ff ff e8 1a 65 0f [ 78.126849][ T8426] RSP: 0018:ffffc9000161f660 EFLAGS: 00010282 [ 78.133133][ T8426] RAX: 0000000000000000 RBX: 1ffff920002c3ecc RCX: 0000000000000000 [ 78.141288][ T8426] RDX: ffff88801954d580 RSI: ffffffff815c3fd5 RDI: fffff520002c3ebe [ 78.150028][ T8426] RBP: ffff888023d56948 R08: 0000000000000000 R09: 0000000000000000 [ 78.158128][ T8426] R10: ffffffff815bd77e R11: 0000000000000000 R12: 0000000021000000 [ 78.166172][ T8426] R13: ffff8880143a4010 R14: 0000000000000000 R15: 0000000000000110 [ 78.174484][ T8426] FS: 00000000005d1300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 78.183579][ T8426] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.190302][ T8426] CR2: 00007f172c4cd6c0 CR3: 0000000011f70000 CR4: 00000000001506f0 [ 78.198593][ T8426] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.206625][ T8426] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.214773][ T8426] Call Trace: [ 78.218178][ T8426] ? generic_access_phys+0x440/0x440 [ 78.223506][ T8426] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 78.230434][ T8426] ? vmacache_find+0x62/0x330 [ 78.235164][ T8426] get_vaddr_frames+0x337/0x600 [ 78.240157][ T8426] vb2_create_framevec+0x55/0xc0 [ 78.245133][ T8426] vb2_vmalloc_get_userptr+0xce/0x4c0 [ 78.250668][ T8426] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 78.256427][ T8426] ? vb2_vmalloc_dmabuf_ops_attach+0x430/0x430 [ 78.262703][ T8426] __prepare_userptr+0x342/0x15f0 [ 78.267906][ T8426] ? vb2_queue_error+0x60/0x60 [ 78.272704][ T8426] ? kfree+0xe5/0x7f0 [ 78.276693][ T8426] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 78.283064][ T8426] ? lock_release+0x720/0x720 [ 78.287882][ T8426] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 78.293987][ T8426] __buf_prepare+0x635/0x7d0 [ 78.298889][ T8426] ? vb2_queue_or_prepare_buf+0x675/0x2610 [ 78.304737][ T8426] vb2_core_qbuf+0xa9d/0x11c0 [ 78.309557][ T8426] ? lock_downgrade+0x6e0/0x6e0 [ 78.314463][ T8426] vb2_qbuf+0x135/0x1a0 [ 78.318761][ T8426] ? vb2_ioctl_prepare_buf+0x140/0x140 [ 78.324262][ T8426] ? __sanitizer_cov_trace_switch+0x63/0xf0 [ 78.330420][ T8426] vb2_ioctl_qbuf+0xfb/0x140 [ 78.335061][ T8426] v4l_qbuf+0x92/0xc0 [ 78.339140][ T8426] __video_do_ioctl+0xb94/0xe20 [ 78.344042][ T8426] ? v4l_print_control+0x60/0x60 [ 78.349070][ T8426] ? __lock_acquire+0x16a7/0x5230 [ 78.354132][ T8426] ? v4l_print_control+0x60/0x60 [ 78.360165][ T8426] video_usercopy+0x253/0x1300 [ 78.364992][ T8426] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 78.372004][ T8426] ? v4l_enumstd+0x60/0x60 [ 78.376484][ T8426] ? generic_block_fiemap+0x10/0x60 [ 78.381935][ T8426] ? lock_downgrade+0x6e0/0x6e0 [ 78.386821][ T8426] ? __context_tracking_enter+0xef/0x100 [ 78.392599][ T8426] v4l2_ioctl+0x1b3/0x250 [ 78.396967][ T8426] ? v4l2_prio_init+0x20/0x20 [ 78.401775][ T8426] __x64_sys_ioctl+0x193/0x200 [ 78.406575][ T8426] do_syscall_64+0x2d/0x70 [ 78.411522][ T8426] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 78.417579][ T8426] RIP: 0033:0x443639 [ 78.421502][ T8426] 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 [ 78.441439][ T8426] RSP: 002b:00007ffee3065668 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 78.450078][ T8426] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443639 [ 78.458150][ T8426] RDX: 0000000020000140 RSI: 00000000c058560f RDI: 0000000000000004 [ 78.466148][ T8426] RBP: 00000000004031e0 R08: 00000000004004a0 R09: 00000000004004a0 [ 78.474228][ T8426] R10: 00236962762f7665 R11: 0000000000000246 R12: 0000000000403270 [ 78.482337][ T8426] R13: 0000000000000000 R14: 00000000004b1018 R15: 00000000004004a0 [ 78.490944][ T8426] Kernel panic - not syncing: panic_on_warn set ... [ 78.497582][ T8426] CPU: 1 PID: 8426 Comm: syz-executor677 Not tainted 5.12.0-rc4-next-20210326-syzkaller #0 [ 78.507582][ T8426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.517737][ T8426] Call Trace: [ 78.521028][ T8426] dump_stack+0x141/0x1d7 [ 78.525410][ T8426] panic+0x306/0x73d [ 78.529306][ T8426] ? __warn_printk+0xf3/0xf3 [ 78.533917][ T8426] ? __warn.cold+0x1a/0x44 [ 78.538350][ T8426] ? unsafe_follow_pfn+0x20f/0x260 [ 78.543506][ T8426] __warn.cold+0x35/0x44 [ 78.547758][ T8426] ? unsafe_follow_pfn+0x20f/0x260 [ 78.552905][ T8426] report_bug+0x1bd/0x210 [ 78.557279][ T8426] handle_bug+0x3c/0x60 [ 78.561465][ T8426] exc_invalid_op+0x14/0x40 [ 78.565992][ T8426] asm_exc_invalid_op+0x12/0x20 [ 78.570876][ T8426] RIP: 0010:unsafe_follow_pfn+0x20f/0x260 [ 78.576628][ T8426] Code: 8b 7c 24 20 49 89 6d 00 e8 6e 84 64 07 e9 30 ff ff ff e8 f4 19 cb ff 48 c7 c7 40 1f 76 89 c6 05 56 eb 09 0c 01 e8 34 1a 21 07 <0f> 0b e9 71 fe ff ff 41 bc ea ff ff ff e9 06 ff ff ff e8 1a 65 0f [ 78.596276][ T8426] RSP: 0018:ffffc9000161f660 EFLAGS: 00010282 [ 78.602371][ T8426] RAX: 0000000000000000 RBX: 1ffff920002c3ecc RCX: 0000000000000000 [ 78.610369][ T8426] RDX: ffff88801954d580 RSI: ffffffff815c3fd5 RDI: fffff520002c3ebe [ 78.618447][ T8426] RBP: ffff888023d56948 R08: 0000000000000000 R09: 0000000000000000 [ 78.626440][ T8426] R10: ffffffff815bd77e R11: 0000000000000000 R12: 0000000021000000 [ 78.634455][ T8426] R13: ffff8880143a4010 R14: 0000000000000000 R15: 0000000000000110 [ 78.642459][ T8426] ? wake_up_klogd.part.0+0x8e/0xd0 [ 78.647719][ T8426] ? vprintk_func+0x95/0x260 [ 78.652524][ T8426] ? generic_access_phys+0x440/0x440 [ 78.657850][ T8426] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 78.663604][ T8426] ? vmacache_find+0x62/0x330 [ 78.668316][ T8426] get_vaddr_frames+0x337/0x600 [ 78.673226][ T8426] vb2_create_framevec+0x55/0xc0 [ 78.678199][ T8426] vb2_vmalloc_get_userptr+0xce/0x4c0 [ 78.683620][ T8426] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 78.689399][ T8426] ? vb2_vmalloc_dmabuf_ops_attach+0x430/0x430 [ 78.695613][ T8426] __prepare_userptr+0x342/0x15f0 [ 78.700679][ T8426] ? vb2_queue_error+0x60/0x60 [ 78.705493][ T8426] ? kfree+0xe5/0x7f0 [ 78.709503][ T8426] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 78.715530][ T8426] ? lock_release+0x720/0x720 [ 78.720322][ T8426] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 78.726355][ T8426] __buf_prepare+0x635/0x7d0 [ 78.730976][ T8426] ? vb2_queue_or_prepare_buf+0x675/0x2610 [ 78.736817][ T8426] vb2_core_qbuf+0xa9d/0x11c0 [ 78.741518][ T8426] ? lock_downgrade+0x6e0/0x6e0 [ 78.746418][ T8426] vb2_qbuf+0x135/0x1a0 [ 78.750606][ T8426] ? vb2_ioctl_prepare_buf+0x140/0x140 [ 78.756120][ T8426] ? __sanitizer_cov_trace_switch+0x63/0xf0 [ 78.762062][ T8426] vb2_ioctl_qbuf+0xfb/0x140 [ 78.766706][ T8426] v4l_qbuf+0x92/0xc0 [ 78.770749][ T8426] __video_do_ioctl+0xb94/0xe20 [ 78.775669][ T8426] ? v4l_print_control+0x60/0x60 [ 78.780640][ T8426] ? __lock_acquire+0x16a7/0x5230 [ 78.785707][ T8426] ? v4l_print_control+0x60/0x60 [ 78.790684][ T8426] video_usercopy+0x253/0x1300 [ 78.795492][ T8426] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 78.801800][ T8426] ? v4l_enumstd+0x60/0x60 [ 78.806250][ T8426] ? generic_block_fiemap+0x10/0x60 [ 78.811498][ T8426] ? lock_downgrade+0x6e0/0x6e0 [ 78.816385][ T8426] ? __context_tracking_enter+0xef/0x100 [ 78.822064][ T8426] v4l2_ioctl+0x1b3/0x250 [ 78.826426][ T8426] ? v4l2_prio_init+0x20/0x20 [ 78.831144][ T8426] __x64_sys_ioctl+0x193/0x200 [ 78.835949][ T8426] do_syscall_64+0x2d/0x70 [ 78.840409][ T8426] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 78.846340][ T8426] RIP: 0033:0x443639 [ 78.850262][ T8426] 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 [ 78.870768][ T8426] RSP: 002b:00007ffee3065668 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 78.879211][ T8426] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443639 [ 78.887322][ T8426] RDX: 0000000020000140 RSI: 00000000c058560f RDI: 0000000000000004 [ 78.895406][ T8426] RBP: 00000000004031e0 R08: 00000000004004a0 R09: 00000000004004a0 [ 78.903408][ T8426] R10: 00236962762f7665 R11: 0000000000000246 R12: 0000000000403270 [ 78.911509][ T8426] R13: 0000000000000000 R14: 00000000004b1018 R15: 00000000004004a0 [ 78.920261][ T8426] Kernel Offset: disabled [ 78.924844][ T8426] Rebooting in 86400 seconds..