Warning: Permanently added '[localhost]:35863' (ECDSA) to the list of known hosts. [ 102.273709][ T48] audit: type=1400 audit(1609070159.096:42): avc: denied { map } for pid=9964 comm="syz-fuzzer" path="/syz-fuzzer" dev="sda1" ino=16526 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 2020/12/27 11:55:59 fuzzer started [ 103.186226][ T9970] ================================================================================ [ 103.208366][ T9970] UBSAN: invalid-load in kernel/params.c:302:33 [ 103.221866][ T9970] load of value 255 is not a valid value for type '_Bool' [ 103.240282][ T9970] CPU: 3 PID: 9970 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 103.250165][ T9970] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 103.250165][ T9970] Call Trace: [ 103.250165][ T9970] dump_stack+0x107/0x163 [ 103.250165][ T9970] ubsan_epilogue+0xb/0x5a [ 103.250165][ T9970] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 103.250165][ T9970] param_get_bool.cold+0x14/0x19 [ 103.250165][ T9970] param_attr_show+0x14a/0x220 [ 103.250165][ T9970] ? kernel_param_unlock+0x40/0x40 [ 103.250165][ T9970] module_attr_show+0x48/0x70 [ 103.250165][ T9970] ? func_ptr_is_kernel_text+0x80/0x80 [ 103.250165][ T9970] sysfs_kf_seq_show+0x1f8/0x400 [ 103.250165][ T9970] seq_read_iter+0x4d3/0x1220 [ 103.250165][ T9970] seq_read+0x3dd/0x5b0 [ 103.250165][ T9970] ? seq_read_iter+0x1220/0x1220 [ 103.250165][ T9970] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 103.250165][ T9970] ? selinux_file_permission+0xcc/0x5a0 [ 103.250165][ T9970] kernfs_fop_read+0xe9/0x590 [ 103.250165][ T9970] ? rw_verify_area+0x11d/0x350 [ 103.250165][ T9970] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 103.250165][ T9970] vfs_read+0x1b5/0x570 [ 103.250165][ T9970] ksys_read+0x12d/0x250 [ 103.250165][ T9970] ? vfs_write+0xa80/0xa80 [ 103.250165][ T9970] ? syscall_enter_from_user_mode+0x1d/0x50 [ 103.250165][ T9970] do_syscall_64+0x2d/0x70 [ 103.250165][ T9970] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 103.250165][ T9970] RIP: 0033:0x4ad4a0 [ 103.250165][ T9970] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 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 [ 103.250165][ T9970] RSP: 002b:000000c0004dd678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 103.250165][ T9970] RAX: ffffffffffffffda RBX: 000000c00001e500 RCX: 00000000004ad4a0 [ 103.250165][ T9970] RDX: 0000000000001200 RSI: 000000c00047b300 RDI: 0000000000000003 [ 103.250165][ T9970] RBP: 000000c0004dd6c8 R08: 0000000000000000 R09: 0000000000000000 [ 103.250165][ T9970] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 103.250165][ T9970] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 103.767301][ T9970] ================================================================================ [ 103.784305][ T9970] Kernel panic - not syncing: panic_on_warn set ... [ 103.794112][ T9970] CPU: 2 PID: 9970 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 103.794112][ T9970] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 103.794112][ T9970] Call Trace: [ 103.794112][ T9970] dump_stack+0x107/0x163 [ 103.840852][ T9970] panic+0x343/0x77f [ 103.840852][ T9970] ? __warn_printk+0xf3/0xf3 [ 103.840852][ T9970] ? ubsan_epilogue+0x3e/0x5a [ 103.840852][ T9970] ubsan_epilogue+0x54/0x5a [ 103.840852][ T9970] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 103.840852][ T9970] param_get_bool.cold+0x14/0x19 [ 103.840852][ T9970] param_attr_show+0x14a/0x220 [ 103.911886][ T9970] ? kernel_param_unlock+0x40/0x40 [ 103.911886][ T9970] module_attr_show+0x48/0x70 [ 103.911886][ T9970] ? func_ptr_is_kernel_text+0x80/0x80 [ 103.911886][ T9970] sysfs_kf_seq_show+0x1f8/0x400 [ 103.951839][ T9970] seq_read_iter+0x4d3/0x1220 [ 103.961834][ T9970] seq_read+0x3dd/0x5b0 [ 103.971934][ T9970] ? seq_read_iter+0x1220/0x1220 [ 103.981908][ T9970] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 103.992067][ T9970] ? selinux_file_permission+0xcc/0x5a0 [ 104.002044][ T9970] kernfs_fop_read+0xe9/0x590 [ 104.002044][ T9970] ? rw_verify_area+0x11d/0x350 [ 104.031950][ T9970] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 104.043097][ T9970] vfs_read+0x1b5/0x570 [ 104.051850][ T9970] ksys_read+0x12d/0x250 [ 104.051850][ T9970] ? vfs_write+0xa80/0xa80 [ 104.051850][ T9970] ? syscall_enter_from_user_mode+0x1d/0x50 [ 104.071925][ T9970] do_syscall_64+0x2d/0x70 [ 104.088174][ T9970] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 104.101247][ T9970] RIP: 0033:0x4ad4a0 [ 104.101935][ T9970] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 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 [ 104.141984][ T9970] RSP: 002b:000000c0004dd678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 104.152111][ T9970] RAX: ffffffffffffffda RBX: 000000c00001e500 RCX: 00000000004ad4a0 [ 104.161921][ T9970] RDX: 0000000000001200 RSI: 000000c00047b300 RDI: 0000000000000003 [ 104.171892][ T9970] RBP: 000000c0004dd6c8 R08: 0000000000000000 R09: 0000000000000000 [ 104.181864][ T9970] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 104.201871][ T9970] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 104.211862][ T9970] Kernel Offset: disabled [ 104.211862][ T9970] Rebooting in 86400 seconds.. VM DIAGNOSIS: 11:56:00 Registers: info registers vcpu 0 RAX=000000000003bef9 RBX=ffffffff8b49bc00 RCX=ffffffff8912cca0 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=fffffbfff1693780 RSP=ffffffff8b407e40 R8 =0000000000000001 R9 =ffff88802ca35c6b R10=ffffed1005946b8d R11=0000000000000000 R12=0000000000000000 R13=0000000000000000 R14=ffffffff8d7bd6c8 R15=0000000000000000 RIP=ffffffff8915233e RFL=00000206 [-----P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 ffffffff 00c00000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 ffffffff 00c00000 FS =0000 0000000000000000 ffffffff 00c00000 GS =0000 ffff88802ca00000 ffffffff 00c00000 LDT=0000 0000000000000000 ffffffff 00c00000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f1723389cf0 CR3=0000000028b4f000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000fffe0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000 XMM02=532e29646d432a282e636578652f736f XMM03=00000000000000000000000000000000 XMM04=6174736e692065726120737265646165 XMM05=613c206564756c636e69230a64656c6c XMM06=736e65202f2f203e6d687469726f676c XMM07=6568202b2b4320746168742073657275 XMM08=736e6920657261207372656461656820 XMM09=206564756c636e69230a64656c6c6174 XMM10=65202f2f203e6d687469726f676c613c XMM11=202b2b4320746168742073657275736e XMM12=74736e69206572612073726564616568 XMM13=29286e69616d20746e690a64656c6c61 XMM14=6f6c6c6548222866746e697270207b20 XMM15=0a7d203b29226e5c21646c726f57202c info registers vcpu 1 RAX=000000000003cd63 RBX=ffff8880112b8380 RCX=ffffffff8912cca0 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=ffffed1002257070 RSP=ffffc9000041fdf8 R8 =0000000000000001 R9 =ffff88802cb35c6b R10=ffffed1005966b8d R11=0000000000000000 R12=0000000000000001 R13=0000000000000001 R14=ffffffff8d7bd6c8 R15=0000000000000000 RIP=ffffffff8915233e RFL=00000206 [-----P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 ffffffff 00c00000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 ffffffff 00c00000 FS =0000 0000000000000000 ffffffff 00c00000 GS =0000 ffff88802cb00000 ffffffff 00c00000 LDT=0000 0000000000000000 00000000 00000000 TR =0040 fffffe000003e000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe000003c000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=0000000000f44100 CR3=0000000028029000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000fffe0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=0a276c6f6f425f27206570797420726f XMM01=5d3636383132322e33303120205b203a XMM02=65756c61762064696c6176206120746f XMM03=6e207369203535322065756c61762066 XMM04=6f2064616f6c205d3037393954205b5d XMM05=5d3636383132322e33303120205b203a XMM06=206e692064616f6c2d64696c61766e69 XMM07=733a745f656c69663a725f7463656a62 XMM08=ffffff0000000000ff000000000000ff XMM09=00000000000000000000000000000000 XMM10=ffffff00000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 2 RAX=0000000000039941 RBX=ffff8880112bc3c0 RCX=ffffffff8912cca0 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=ffffed1002257878 RSP=ffffc9000042fdf8 R8 =0000000000000001 R9 =ffff88802cc35c6b R10=ffffed1005986b8d R11=0000000000000000 R12=0000000000000002 R13=0000000000000002 R14=ffffffff8d7bd6c8 R15=0000000000000000 RIP=ffffffff8915233e RFL=00000206 [-----P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 ffffffff 00c00000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 ffffffff 00c00000 FS =0000 0000000000000000 ffffffff 00c00000 GS =0000 ffff88802cc00000 ffffffff 00c00000 LDT=0000 0000000000000000 00000000 00000000 TR =0040 fffffe0000079000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000077000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=0000000000a61b2b CR3=0000000028029000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000fffe0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=205b5d3636383132322e33303120205b XMM01=00000000000000000000000000000000 XMM02=00000000000001210000000000435455 XMM03=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM04=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM05=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM06=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM07=00000000000000002000000000000020 XMM08=ffffff0000000000ff000000000000ff XMM09=00000000000000000000000000000000 XMM10=ffffff00000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 3 RAX=0000000000000066 RBX=0000000000000000 RCX=0000000000000000 RDX=00000000000003f8 RSI=ffffffff841a5371 RDI=ffffffff9042abe0 RBP=ffffffff9042aba0 RSP=ffffc900019076c0 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff841a5362 R11=000000000000001f R12=0000000000000066 R13=0000000000000000 R14=ffffffff9042aba0 R15=dffffc0000000000 RIP=ffffffff841a539c RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 ffffffff 00c00000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 ffffffff 00c00000 FS =0000 000000c000033910 ffffffff 00c00000 GS =0000 ffff88802cd00000 ffffffff 00c00000 LDT=0000 0000000000000000 00000000 00000000 TR =0040 fffffe00000b4000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe00000b2000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f1723664ec8 CR3=0000000028b4f000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000fffe0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=000000c00023fad00000000000000001 XMM02=6574656d617261702f6d766b2f656c75 XMM03=73656761705f656775685f786e2f7372 XMM04=0000000000000009000000c0002c0730 XMM05=0000000000000007000000c0002c1730 XMM06=0000000000000004000000c0002c1738 XMM07=0000000000000007000000c0002c1740 XMM08=000000000000000e000000c0002c1750 XMM09=0000000000000005000000c0002c1747 XMM10=000000000000000e000000c0002c1760 XMM11=000000000000000b000000c0002c1770 XMM12=0000000000000010000000c0002c1780 XMM13=000000c0002c01200000000000000001 XMM14=000000c00015a0300000000000000005 XMM15=00000000000000010000000000000001