Warning: Permanently added '10.128.15.194' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 119.776780][ T32] audit: type=1400 audit(1589873826.167:8): avc: denied { execmem } for pid=8778 comm="syz-executor148" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 119.810116][ T8779] MINIX-fs: mounting unchecked file system, running fsck is recommended [ 119.834847][ T8783] Process accounting resumed [ 119.850307][ T8783] ===================================================== [ 119.857327][ T8783] BUG: KMSAN: uninit-value in get_block+0xa00/0x1f80 [ 119.864017][ T8783] CPU: 0 PID: 8783 Comm: syz-executor148 Not tainted 5.7.0-rc4-syzkaller #0 [ 119.873730][ T8783] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.883794][ T8783] Call Trace: [ 119.887122][ T8783] dump_stack+0x1c9/0x220 [ 119.891464][ T8783] kmsan_report+0xf7/0x1e0 [ 119.895895][ T8783] __msan_warning+0x58/0xa0 [ 119.900535][ T8783] get_block+0xa00/0x1f80 [ 119.904910][ T8783] V1_minix_get_block+0xb5/0xd0 [ 119.909783][ T8783] minix_get_block+0x13e/0x1f0 [ 119.914567][ T8783] ? minix_prepare_chunk+0xb0/0xb0 [ 119.919701][ T8783] __block_write_begin_int+0xb05/0x2ad0 [ 119.925283][ T8783] ? minix_prepare_chunk+0xb0/0xb0 [ 119.930418][ T8783] block_write_begin+0x16c/0x340 [ 119.935630][ T8783] ? minix_prepare_chunk+0xb0/0xb0 [ 119.940765][ T8783] minix_write_begin+0x119/0x3d0 [ 119.946745][ T8783] ? minix_readpage+0x60/0x60 [ 119.951415][ T8783] generic_perform_write+0x3d4/0x9a0 [ 119.956700][ T8783] __generic_file_write_iter+0x44e/0xa50 [ 119.962346][ T8783] ? kmsan_get_metadata+0x11d/0x180 [ 119.967558][ T8783] generic_file_write_iter+0x770/0xad0 [ 119.969758][ T8782] Process accounting resumed [ 119.973040][ T8783] ? __generic_file_write_iter+0xa50/0xa50 [ 119.983511][ T8783] __vfs_write+0xa5a/0xca0 [ 119.987991][ T8783] __kernel_write+0x205/0x600 [ 119.992713][ T8783] do_acct_process+0x1b6a/0x1fb0 [ 119.997689][ T8783] ? acct_process+0x5b0/0x5b0 [ 120.002370][ T8783] acct_pin_kill+0x54/0x250 [ 120.006882][ T8783] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 120.012760][ T8783] ? acct_process+0x5b0/0x5b0 [ 120.017435][ T8783] pin_kill+0x1c8/0x5d0 [ 120.021621][ T8783] ? init_wait_entry+0x190/0x190 [ 120.026569][ T8783] __se_sys_acct+0xbcd/0xdd0 [ 120.031150][ T8783] __ia32_sys_acct+0x32/0x50 [ 120.035739][ T8783] ? __se_sys_acct+0xdd0/0xdd0 [ 120.040485][ T8783] do_fast_syscall_32+0x3bf/0x6d0 [ 120.045494][ T8783] entry_SYSENTER_compat+0x68/0x77 [ 120.050597][ T8783] RIP: 0023:0xf7fb7dd9 [ 120.054664][ T8783] Code: 90 e8 0b 00 00 00 f3 90 0f ae e8 eb f9 8d 74 26 00 89 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 120.074297][ T8783] RSP: 002b:00000000f7f9112c EFLAGS: 00000292 ORIG_RAX: 0000000000000033 [ 120.082718][ T8783] RAX: ffffffffffffffda RBX: 0000000020000480 RCX: 0000000000000081 [ 120.090691][ T8783] RDX: 00000000000f4240 RSI: 0000000000000000 RDI: 00000000080fbff0 [ 120.098657][ T8783] RBP: 00000000080fbffc R08: 0000000000000000 R09: 0000000000000000 [ 120.106621][ T8783] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 120.114599][ T8783] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 120.122580][ T8783] [ 120.124901][ T8783] Uninit was stored to memory at: [ 120.129927][ T8783] kmsan_internal_chain_origin+0xad/0x130 [ 120.135644][ T8783] __msan_chain_origin+0x50/0x90 [ 120.140577][ T8783] get_block+0xa4d/0x1f80 [ 120.144904][ T8783] V1_minix_get_block+0xb5/0xd0 [ 120.149752][ T8783] minix_get_block+0x13e/0x1f0 [ 120.154512][ T8783] __block_write_begin_int+0xb05/0x2ad0 [ 120.160068][ T8783] block_write_begin+0x16c/0x340 [ 120.165033][ T8783] minix_write_begin+0x119/0x3d0 [ 120.169975][ T8783] generic_perform_write+0x3d4/0x9a0 [ 120.175256][ T8783] __generic_file_write_iter+0x44e/0xa50 [ 120.180887][ T8783] generic_file_write_iter+0x770/0xad0 [ 120.186345][ T8783] __vfs_write+0xa5a/0xca0 [ 120.190760][ T8783] __kernel_write+0x205/0x600 [ 120.195436][ T8783] do_acct_process+0x1b6a/0x1fb0 [ 120.200368][ T8783] acct_pin_kill+0x54/0x250 [ 120.204888][ T8783] pin_kill+0x1c8/0x5d0 [ 120.209038][ T8783] __se_sys_acct+0xbcd/0xdd0 [ 120.213658][ T8783] __ia32_sys_acct+0x32/0x50 [ 120.218272][ T8783] do_fast_syscall_32+0x3bf/0x6d0 [ 120.223325][ T8783] entry_SYSENTER_compat+0x68/0x77 [ 120.228429][ T8783] [ 120.230753][ T8783] Uninit was created at: [ 120.234998][ T8783] kmsan_save_stack_with_flags+0x3c/0x90 [ 120.240712][ T8783] kmsan_alloc_page+0xb9/0x180 [ 120.245475][ T8783] __alloc_pages_nodemask+0x56a2/0x5dc0 [ 120.251018][ T8783] alloc_pages_current+0x67d/0x990 [ 120.256300][ T8783] __page_cache_alloc+0x95/0x310 [ 120.261235][ T8783] pagecache_get_page+0xab7/0x1250 [ 120.266346][ T8783] __getblk_gfp+0x4bb/0xfc0 [ 120.270843][ T8783] __bread_gfp+0xb9/0x670 [ 120.275163][ T8783] get_block+0x73e/0x1f80 [ 120.279489][ T8783] V1_minix_get_block+0xb5/0xd0 [ 120.284343][ T8783] minix_get_block+0x13e/0x1f0 [ 120.289103][ T8783] __block_write_begin_int+0xb05/0x2ad0 [ 120.294657][ T8783] block_write_begin+0x16c/0x340 [ 120.299595][ T8783] minix_write_begin+0x119/0x3d0 [ 120.304553][ T8783] generic_perform_write+0x3d4/0x9a0 [ 120.309850][ T8783] __generic_file_write_iter+0x44e/0xa50 [ 120.315484][ T8783] generic_file_write_iter+0x770/0xad0 [ 120.320943][ T8783] __vfs_write+0xa5a/0xca0 [ 120.325355][ T8783] __kernel_write+0x205/0x600 [ 120.330028][ T8783] do_acct_process+0x1b6a/0x1fb0 [ 120.334961][ T8783] acct_pin_kill+0x54/0x250 [ 120.339465][ T8783] pin_kill+0x1c8/0x5d0 [ 120.343617][ T8783] __se_sys_acct+0xbcd/0xdd0 [ 120.348271][ T8783] __ia32_sys_acct+0x32/0x50 [ 120.352877][ T8783] do_fast_syscall_32+0x3bf/0x6d0 [ 120.357906][ T8783] entry_SYSENTER_compat+0x68/0x77 [ 120.363006][ T8783] ===================================================== [ 120.369927][ T8783] Disabling lock debugging due to kernel taint [ 120.376070][ T8783] Kernel panic - not syncing: panic_on_warn set ... [ 120.382661][ T8783] CPU: 0 PID: 8783 Comm: syz-executor148 Tainted: G B 5.7.0-rc4-syzkaller #0 [ 120.392733][ T8783] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 120.402870][ T8783] Call Trace: [ 120.406179][ T8783] dump_stack+0x1c9/0x220 [ 120.410519][ T8783] panic+0x3d5/0xc3e [ 120.414446][ T8783] kmsan_report+0x1df/0x1e0 [ 120.419044][ T8783] __msan_warning+0x58/0xa0 [ 120.423571][ T8783] get_block+0xa00/0x1f80 [ 120.428114][ T8783] V1_minix_get_block+0xb5/0xd0 [ 120.432979][ T8783] minix_get_block+0x13e/0x1f0 [ 120.437753][ T8783] ? minix_prepare_chunk+0xb0/0xb0 [ 120.442866][ T8783] __block_write_begin_int+0xb05/0x2ad0 [ 120.448457][ T8783] ? minix_prepare_chunk+0xb0/0xb0 [ 120.453581][ T8783] block_write_begin+0x16c/0x340 [ 120.458519][ T8783] ? minix_prepare_chunk+0xb0/0xb0 [ 120.463636][ T8783] minix_write_begin+0x119/0x3d0 [ 120.468582][ T8783] ? minix_readpage+0x60/0x60 [ 120.473257][ T8783] generic_perform_write+0x3d4/0x9a0 [ 120.478572][ T8783] __generic_file_write_iter+0x44e/0xa50 [ 120.484216][ T8783] ? kmsan_get_metadata+0x11d/0x180 [ 120.489426][ T8783] generic_file_write_iter+0x770/0xad0 [ 120.494903][ T8783] ? __generic_file_write_iter+0xa50/0xa50 [ 120.500705][ T8783] __vfs_write+0xa5a/0xca0 [ 120.508450][ T8783] __kernel_write+0x205/0x600 [ 120.513144][ T8783] do_acct_process+0x1b6a/0x1fb0 [ 120.518153][ T8783] ? acct_process+0x5b0/0x5b0 [ 120.522829][ T8783] acct_pin_kill+0x54/0x250 [ 120.527348][ T8783] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 120.533216][ T8783] ? acct_process+0x5b0/0x5b0 [ 120.537900][ T8783] pin_kill+0x1c8/0x5d0 [ 120.542069][ T8783] ? init_wait_entry+0x190/0x190 [ 120.547016][ T8783] __se_sys_acct+0xbcd/0xdd0 [ 120.551633][ T8783] __ia32_sys_acct+0x32/0x50 [ 120.556237][ T8783] ? __se_sys_acct+0xdd0/0xdd0 [ 120.561002][ T8783] do_fast_syscall_32+0x3bf/0x6d0 [ 120.566036][ T8783] entry_SYSENTER_compat+0x68/0x77 [ 120.571143][ T8783] RIP: 0023:0xf7fb7dd9 [ 120.575210][ T8783] Code: 90 e8 0b 00 00 00 f3 90 0f ae e8 eb f9 8d 74 26 00 89 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 120.594815][ T8783] RSP: 002b:00000000f7f9112c EFLAGS: 00000292 ORIG_RAX: 0000000000000033 [ 120.603369][ T8783] RAX: ffffffffffffffda RBX: 0000000020000480 RCX: 0000000000000081 [ 120.611356][ T8783] RDX: 00000000000f4240 RSI: 0000000000000000 RDI: 00000000080fbff0 [ 120.619330][ T8783] RBP: 00000000080fbffc R08: 0000000000000000 R09: 0000000000000000 [ 120.627306][ T8783] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 120.635279][ T8783] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 120.644694][ T8783] Kernel Offset: 0x29c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 120.656311][ T8783] Rebooting in 86400 seconds..