Warning: Permanently added '[localhost]:62425' (ECDSA) to the list of known hosts. 2020/12/27 11:49:26 fuzzer started syzkaller login: [ 96.657650][ T9226] ================================================================================ [ 96.668683][ T9226] UBSAN: invalid-load in kernel/params.c:302:33 [ 96.675619][ T9226] load of value 255 is not a valid value for type '_Bool' [ 96.686418][ T9226] CPU: 0 PID: 9226 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 96.696336][ T9226] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 96.708503][ T9226] Call Trace: [ 96.708503][ T9226] dump_stack+0x107/0x163 [ 96.708503][ T9226] ubsan_epilogue+0xb/0x5a [ 96.728962][ T9226] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 96.728962][ T9226] param_get_bool.cold+0x14/0x19 [ 96.728962][ T9226] param_attr_show+0x14a/0x220 [ 96.748380][ T9226] ? kernel_param_unlock+0x40/0x40 [ 96.748380][ T9226] module_attr_show+0x48/0x70 [ 96.748380][ T9226] ? func_ptr_is_kernel_text+0x80/0x80 [ 96.748380][ T9226] sysfs_kf_seq_show+0x1f8/0x400 [ 96.748380][ T9226] seq_read_iter+0x4d3/0x1220 [ 96.748380][ T9226] seq_read+0x3dd/0x5b0 [ 96.788961][ T9226] ? seq_read_iter+0x1220/0x1220 [ 96.788961][ T9226] ? lock_downgrade+0x6d0/0x6d0 [ 96.798866][ T9226] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 96.808520][ T9226] kernfs_fop_read+0xe9/0x590 [ 96.808520][ T9226] ? rw_verify_area+0x11d/0x350 [ 96.808520][ T9226] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 96.828577][ T9226] vfs_read+0x1b5/0x570 [ 96.828577][ T9226] ksys_read+0x12d/0x250 [ 96.828577][ T9226] ? vfs_write+0xa80/0xa80 [ 96.828577][ T9226] ? syscall_enter_from_user_mode+0x1d/0x50 [ 96.849763][ T9226] do_syscall_64+0x2d/0x70 [ 96.849763][ T9226] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 96.849763][ T9226] RIP: 0033:0x4ad4a0 [ 96.868473][ T9226] 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 [ 96.888489][ T9226] RSP: 002b:000000c0003cf678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 96.888489][ T9226] RAX: ffffffffffffffda RBX: 000000c000020a00 RCX: 00000000004ad4a0 [ 96.908882][ T9226] RDX: 0000000000001200 RSI: 000000c0003d9300 RDI: 0000000000000003 [ 96.908882][ T9226] RBP: 000000c0003cf6c8 R08: 0000000000000000 R09: 0000000000000000 [ 96.928725][ T9226] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 96.928725][ T9226] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 96.951913][ T9226] ================================================================================ [ 96.964524][ T9226] Kernel panic - not syncing: panic_on_warn set ... [ 96.973265][ T9226] CPU: 2 PID: 9226 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 96.974382][ T9226] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 96.974382][ T9226] Call Trace: [ 96.974382][ T9226] dump_stack+0x107/0x163 [ 96.974382][ T9226] panic+0x343/0x77f [ 96.974382][ T9226] ? __warn_printk+0xf3/0xf3 [ 96.974382][ T9226] ? ubsan_epilogue+0x3e/0x5a [ 96.974382][ T9226] ubsan_epilogue+0x54/0x5a [ 96.974382][ T9226] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 96.974382][ T9226] param_get_bool.cold+0x14/0x19 [ 96.974382][ T9226] param_attr_show+0x14a/0x220 [ 96.974382][ T9226] ? kernel_param_unlock+0x40/0x40 [ 96.974382][ T9226] module_attr_show+0x48/0x70 [ 96.974382][ T9226] ? func_ptr_is_kernel_text+0x80/0x80 [ 96.974382][ T9226] sysfs_kf_seq_show+0x1f8/0x400 [ 96.974382][ T9226] seq_read_iter+0x4d3/0x1220 [ 96.974382][ T9226] seq_read+0x3dd/0x5b0 [ 96.974382][ T9226] ? seq_read_iter+0x1220/0x1220 [ 96.974382][ T9226] ? lock_downgrade+0x6d0/0x6d0 [ 96.974382][ T9226] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 96.974382][ T9226] kernfs_fop_read+0xe9/0x590 [ 96.974382][ T9226] ? rw_verify_area+0x11d/0x350 [ 96.974382][ T9226] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 96.974382][ T9226] vfs_read+0x1b5/0x570 [ 96.974382][ T9226] ksys_read+0x12d/0x250 [ 96.974382][ T9226] ? vfs_write+0xa80/0xa80 [ 96.974382][ T9226] ? syscall_enter_from_user_mode+0x1d/0x50 [ 96.974382][ T9226] do_syscall_64+0x2d/0x70 [ 96.974382][ T9226] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 96.974382][ T9226] RIP: 0033:0x4ad4a0 [ 96.974382][ T9226] 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 [ 96.974382][ T9226] RSP: 002b:000000c0003cf678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 96.974382][ T9226] RAX: ffffffffffffffda RBX: 000000c000020a00 RCX: 00000000004ad4a0 [ 96.974382][ T9226] RDX: 0000000000001200 RSI: 000000c0003d9300 RDI: 0000000000000003 [ 96.974382][ T9226] RBP: 000000c0003cf6c8 R08: 0000000000000000 R09: 0000000000000000 [ 96.974382][ T9226] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 96.974382][ T9226] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 96.974382][ T9226] Kernel Offset: disabled [ 96.974382][ T9226] Rebooting in 86400 seconds.. VM DIAGNOSIS: 11:49:27 Registers: info registers vcpu 0 RAX=dffffc0000000060 RBX=0000000000000005 RCX=0000000000000000 RDX=00000000000003fd RSI=ffffffff8419a86c RDI=ffffffff9040dd80 RBP=ffffffff9040dd40 RSP=ffffc90001e8f668 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 000000c000320790 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=00007fbff8b80cf0 CR3=000000001f661000 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=000000c0001cfba00000000000000001 XMM02=6574656d617261702f6d766b2f656c75 XMM03=73656761705f656775685f786e2f7372 XMM04=0000000000000009000000c000094cd0 XMM05=0000000000000005000000c0002c8847 XMM06=0000000000000007000000c0002c8870 XMM07=0000000000000004000000c0002c8878 XMM08=0000000000000007000000c0002c8880 XMM09=000000000000000e000000c0002c8890 XMM10=0000000000000005000000c0002c8887 XMM11=000000000000000e000000c0002c88a0 XMM12=000000000000000b000000c0002c88b0 XMM13=0000000000000007000000000095fde6 XMM14=000000000000000d00000000009784d6 XMM15=000000000000001900000000009be221 info registers vcpu 1 RAX=00000000000434a9 RBX=ffff88801104a200 RCX=ffffffff8911bf50 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=ffffed1002209440 RSP=ffffc900003ffdf8 R8 =0000000000000001 R9 =ffff88802cb35bab R10=ffffed1005966b75 R11=0000000000000000 R12=0000000000000001 R13=0000000000000001 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 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=00007fb95900ea90 CR3=000000001f661000 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=0000000000047ca9 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=00007f1c25afacf0 CR3=000000001f661000 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=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 3 RAX=0000000000044f2f RBX=ffff888011070000 RCX=ffffffff8911bf50 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=ffffed100220e000 RSP=ffffc9000041fdf8 R8 =0000000000000001 R9 =ffff88802cd35bab R10=ffffed10059a6b75 R11=0000000000000000 R12=0000000000000003 R13=0000000000000003 R14=ffffffff8d7bae48 R15=0000000000000000 RIP=ffffffff891411de RFL=00000202 [-------] 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 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=00007fb958f439f8 CR3=000000001f661000 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=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