Warning: Permanently added '[localhost]:17389' (ECDSA) to the list of known hosts. 2020/12/27 12:13:11 fuzzer started syzkaller login: [ 103.785179][ T9367] ================================================================================ [ 103.800613][ T9367] UBSAN: invalid-load in kernel/params.c:302:33 [ 103.808914][ T9367] load of value 255 is not a valid value for type '_Bool' [ 103.820999][ T9367] CPU: 0 PID: 9367 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 103.830891][ T9367] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 103.830891][ T9367] Call Trace: [ 103.830891][ T9367] dump_stack+0x107/0x163 [ 103.830891][ T9367] ubsan_epilogue+0xb/0x5a [ 103.830891][ T9367] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 103.830891][ T9367] ? kcov_remote_stop+0x3f0/0x3f0 [ 103.830891][ T9367] param_get_bool.cold+0x14/0x19 [ 103.830891][ T9367] param_attr_show+0x14a/0x220 [ 103.830891][ T9367] ? kernel_param_unlock+0x40/0x40 [ 103.830891][ T9367] module_attr_show+0x48/0x70 [ 103.830891][ T9367] ? func_ptr_is_kernel_text+0x80/0x80 [ 103.830891][ T9367] sysfs_kf_seq_show+0x1f8/0x400 [ 103.830891][ T9367] seq_read_iter+0x4d3/0x1220 [ 103.830891][ T9367] seq_read+0x3dd/0x5b0 [ 103.830891][ T9367] ? seq_read_iter+0x1220/0x1220 [ 103.830891][ T9367] ? lock_downgrade+0x6d0/0x6d0 [ 103.830891][ T9367] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 103.830891][ T9367] kernfs_fop_read+0xe9/0x590 [ 103.830891][ T9367] ? rw_verify_area+0x11d/0x350 [ 103.830891][ T9367] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 103.830891][ T9367] vfs_read+0x1b5/0x570 [ 103.830891][ T9367] ksys_read+0x12d/0x250 [ 103.830891][ T9367] ? vfs_write+0xa80/0xa80 [ 103.830891][ T9367] ? syscall_enter_from_user_mode+0x1d/0x50 [ 103.830891][ T9367] do_syscall_64+0x2d/0x70 [ 103.830891][ T9367] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 103.830891][ T9367] RIP: 0033:0x4ad4a0 [ 103.830891][ T9367] 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 [ 103.830891][ T9367] RSP: 002b:000000c0004b5678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 103.830891][ T9367] RAX: ffffffffffffffda RBX: 000000c000020a00 RCX: 00000000004ad4a0 [ 103.830891][ T9367] RDX: 0000000000001200 RSI: 000000c0001f9300 RDI: 0000000000000003 [ 103.830891][ T9367] RBP: 000000c0004b56c8 R08: 0000000000000000 R09: 0000000000000000 [ 103.830891][ T9367] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 103.830891][ T9367] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 104.087584][ T9367] ================================================================================ [ 104.098218][ T9367] Kernel panic - not syncing: panic_on_warn set ... [ 104.105088][ T9367] CPU: 0 PID: 9367 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 104.107928][ T9367] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 104.107928][ T9367] Call Trace: [ 104.107928][ T9367] dump_stack+0x107/0x163 [ 104.107928][ T9367] panic+0x343/0x77f [ 104.107928][ T9367] ? __warn_printk+0xf3/0xf3 [ 104.107928][ T9367] ? ubsan_epilogue+0x3e/0x5a [ 104.107928][ T9367] ubsan_epilogue+0x54/0x5a [ 104.107928][ T9367] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 104.107928][ T9367] ? kcov_remote_stop+0x3f0/0x3f0 [ 104.107928][ T9367] param_get_bool.cold+0x14/0x19 [ 104.107928][ T9367] param_attr_show+0x14a/0x220 [ 104.107928][ T9367] ? kernel_param_unlock+0x40/0x40 [ 104.107928][ T9367] module_attr_show+0x48/0x70 [ 104.107928][ T9367] ? func_ptr_is_kernel_text+0x80/0x80 [ 104.107928][ T9367] sysfs_kf_seq_show+0x1f8/0x400 [ 104.107928][ T9367] seq_read_iter+0x4d3/0x1220 [ 104.107928][ T9367] seq_read+0x3dd/0x5b0 [ 104.107928][ T9367] ? seq_read_iter+0x1220/0x1220 [ 104.107928][ T9367] ? lock_downgrade+0x6d0/0x6d0 [ 104.107928][ T9367] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 104.107928][ T9367] kernfs_fop_read+0xe9/0x590 [ 104.107928][ T9367] ? rw_verify_area+0x11d/0x350 [ 104.107928][ T9367] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 104.107928][ T9367] vfs_read+0x1b5/0x570 [ 104.107928][ T9367] ksys_read+0x12d/0x250 [ 104.107928][ T9367] ? vfs_write+0xa80/0xa80 [ 104.107928][ T9367] ? syscall_enter_from_user_mode+0x1d/0x50 [ 104.107928][ T9367] do_syscall_64+0x2d/0x70 [ 104.107928][ T9367] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 104.107928][ T9367] RIP: 0033:0x4ad4a0 [ 104.107928][ T9367] 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 [ 104.107928][ T9367] RSP: 002b:000000c0004b5678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 104.107928][ T9367] RAX: ffffffffffffffda RBX: 000000c000020a00 RCX: 00000000004ad4a0 [ 104.107928][ T9367] RDX: 0000000000001200 RSI: 000000c0001f9300 RDI: 0000000000000003 [ 104.107928][ T9367] RBP: 000000c0004b56c8 R08: 0000000000000000 R09: 0000000000000000 [ 104.107928][ T9367] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 104.107928][ T9367] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 104.107928][ T9367] Kernel Offset: disabled [ 104.107928][ T9367] Rebooting in 86400 seconds.. VM DIAGNOSIS: 12:13:12 Registers: info registers vcpu 0 RAX=dffffc0000000060 RBX=0000000000000005 RCX=0000000000000000 RDX=00000000000003fd RSI=ffffffff8419a86c RDI=ffffffff9040dd80 RBP=ffffffff9040dd40 RSP=ffffc90001797668 R8 =000000000000004f R9 =0000000000000000 R10=ffffffff8419a85d R11=000000000000001f R12=0000000000000000 R13=fffffbfff2081bfb R14=fffffbfff2081bb2 R15=dffffc0000000000 RIP=ffffffff8419a894 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 0000000001ad4c30 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=0000000000f440f8 CR3=0000000018e05000 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=000000c00018fee00000000000000001 XMM02=6574656d617261702f6d766b2f656c75 XMM03=73656761705f656775685f786e2f7372 XMM04=00000000000000003fd3333333333333 XMM05=0000000000000005000000c0002cd957 XMM06=0000000000000007000000c0002cd980 XMM07=0000000000000004000000c0002cd988 XMM08=0000000000000007000000c0002cd990 XMM09=000000000000000e000000c0002cd9a0 XMM10=0000000000000005000000c0002cd997 XMM11=000000000000000e000000c0002cd9b0 XMM12=000000000000000b000000c0002cd9c0 XMM13=000000c0002cc6100000000000000001 XMM14=000000c0002ecc100000000000000005 XMM15=00000000000000010000000000000001 info registers vcpu 1 RAX=00000033999cc73e RBX=0000000000000000 RCX=00000000000006e0 RDX=0000000000000033 RSI=ffff88802cb1fa00 RDI=00000000001d69e8 RBP=ffff88802cb1fa00 RSP=ffffc900004c8eb8 R8 =000000000000003f R9 =0000000000000000 R10=ffffffff8165ff77 R11=0000000000000000 R12=00000000001d69e8 R13=0000000000000019 R14=ffff88802cb1fa38 R15=ffff88802cb26a00 RIP=ffffffff812f829b RFL=00000007 [-----PC] 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 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=00007f4a8cdb2700 CR3=0000000018e05000 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=00000000000000000000000000000000 XMM02=0000000000000000c1162e42fefa39ef XMM03=0000000000000000414fffffe0000000 XMM04=61636f6c2f7273752f3a6e6962732f6c XMM05=3a6e6962732f7273752f3a6e69622f6c XMM06=2f3a6e6962732f3a6e69622f7273752f XMM07=3131582f6e69622f7273752f3a6e6962 XMM08=00000000000000000000000000000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 2 RAX=000000000004339f RBX=ffff88801104c400 RCX=ffffffff8911bf50 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=ffffed1002209880 RSP=ffffc9000040fdf8 R8 =0000000000000001 R9 =ffff88802cc35bab R10=ffffed1005986b75 R11=0000000000000000 R12=0000000000000002 R13=0000000000000002 R14=ffffffff8d7bae48 R15=0000000000000000 RIP=ffffffff891411de 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=00007fef2979ecf0 CR3=0000000018e05000 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=00000000000000003f70c6f7a0b5ed8d XMM02=000000000000000043e0000000000000 XMM03=000000c0000c90e0000000c0000c2f90 XMM04=000000c0000c3230000000c0000c3200 XMM05=000000c0000749f0000000c0000c3260 XMM06=000000c0000c32c0000000c0000c3290 XMM07=000000c0000c3320000000c0000c32f0 XMM08=000000c0000c3170000000c0000c3140 XMM09=000000c0000c31d0000000c0000c31a0 XMM10=000000c0000c3230000000c0000c3200 XMM11=000000c0000749f0000000c0000c3260 XMM12=000000c0000c32c0000000c0000c3290 XMM13=000000c0000c3320000000c0000c32f0 XMM14=000000c0000c3380000000c0000c3350 XMM15=000000c0000caa20000000c0000c33b0 info registers vcpu 3 RAX=0000000000000000 RBX=ffff88802ca3b4e0 RCX=0000000000000001 RDX=0000000000000000 RSI=ffff88801336a200 RDI=0000000000000003 RBP=0000000000000003 RSP=ffffc90001777978 R8 =0000000000000000 R9 =0000000000000001 R10=ffffffff8167dbee R11=0000000000000000 R12=ffffed100594769d R13=0000000000000000 R14=ffff88802ca3b4e8 R15=0000000000000001 RIP=ffffffff817345b1 RFL=00000293 [--S-A-C] 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 000000c00005ab10 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=0000000000f44100 CR3=0000000018e05000 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=00000000000000003f70c6f7a0b5ed8d XMM02=000000000000000043e0000000000000 XMM03=0000000000000000414cfebae6666667 XMM04=00000000000000003fd739eeaa80c55d XMM05=000000c0000d1bc0000000c0000d1b90 XMM06=00000000000000003fd3333333333333 XMM07=00000000000000003fd0a8b8f2280c19 XMM08=00000000000000003fdea20af51d70b4 XMM09=00000000000000003f6dd2475b852700 XMM10=00000000000000003fd76dae9528a316 XMM11=000000c000074f60000000c0000de900 XMM12=000000c0000e27e0000000c0000de930 XMM13=000000c000162000000000c00016c000 XMM14=000000c000140a00000000c000098200 XMM15=000000c000167000000000c000171000