Warning: Permanently added '[localhost]:2320' (ECDSA) to the list of known hosts. 2020/12/27 12:34:49 fuzzer started syzkaller login: [ 101.425096][ T9446] ================================================================================ [ 101.435556][ T9446] UBSAN: invalid-load in kernel/params.c:302:33 [ 101.442397][ T9446] load of value 255 is not a valid value for type '_Bool' [ 101.452295][ T9446] CPU: 3 PID: 9446 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 101.461158][ T9446] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 101.462223][ T9446] Call Trace: [ 101.462223][ T9446] dump_stack+0x107/0x163 [ 101.462223][ T9446] ubsan_epilogue+0xb/0x5a [ 101.462223][ T9446] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 101.462223][ T9446] param_get_bool.cold+0x14/0x19 [ 101.462223][ T9446] param_attr_show+0x14a/0x220 [ 101.462223][ T9446] ? kernel_param_unlock+0x40/0x40 [ 101.462223][ T9446] module_attr_show+0x48/0x70 [ 101.462223][ T9446] ? func_ptr_is_kernel_text+0x80/0x80 [ 101.462223][ T9446] sysfs_kf_seq_show+0x1f8/0x400 [ 101.462223][ T9446] seq_read_iter+0x4d3/0x1220 [ 101.462223][ T9446] seq_read+0x3dd/0x5b0 [ 101.462223][ T9446] ? seq_read_iter+0x1220/0x1220 [ 101.462223][ T9446] ? lock_downgrade+0x6d0/0x6d0 [ 101.462223][ T9446] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 101.462223][ T9446] kernfs_fop_read+0xe9/0x590 [ 101.462223][ T9446] ? rw_verify_area+0x11d/0x350 [ 101.462223][ T9446] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 101.462223][ T9446] vfs_read+0x1b5/0x570 [ 101.462223][ T9446] ksys_read+0x12d/0x250 [ 101.462223][ T9446] ? vfs_write+0xa80/0xa80 [ 101.462223][ T9446] ? syscall_enter_from_user_mode+0x1d/0x50 [ 101.462223][ T9446] do_syscall_64+0x2d/0x70 [ 101.462223][ T9446] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 101.462223][ T9446] RIP: 0033:0x4ad4a0 [ 101.462223][ T9446] 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 [ 101.462223][ T9446] RSP: 002b:000000c000067678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 101.462223][ T9446] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004ad4a0 [ 101.462223][ T9446] RDX: 0000000000001200 RSI: 000000c0003a3300 RDI: 0000000000000003 [ 101.462223][ T9446] RBP: 000000c0000676c8 R08: 0000000000000000 R09: 0000000000000000 [ 101.462223][ T9446] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 101.462223][ T9446] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 101.687710][ T9446] ================================================================================ [ 101.698664][ T9446] Kernel panic - not syncing: panic_on_warn set ... [ 101.705673][ T9446] CPU: 2 PID: 9446 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 101.708546][ T9446] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 101.708546][ T9446] Call Trace: [ 101.708546][ T9446] dump_stack+0x107/0x163 [ 101.708546][ T9446] panic+0x343/0x77f [ 101.708546][ T9446] ? __warn_printk+0xf3/0xf3 [ 101.708546][ T9446] ? ubsan_epilogue+0x3e/0x5a [ 101.747535][ T9446] ubsan_epilogue+0x54/0x5a [ 101.747535][ T9446] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 101.747535][ T9446] param_get_bool.cold+0x14/0x19 [ 101.747535][ T9446] param_attr_show+0x14a/0x220 [ 101.747535][ T9446] ? kernel_param_unlock+0x40/0x40 [ 101.747535][ T9446] module_attr_show+0x48/0x70 [ 101.747535][ T9446] ? func_ptr_is_kernel_text+0x80/0x80 [ 101.747535][ T9446] sysfs_kf_seq_show+0x1f8/0x400 [ 101.747535][ T9446] seq_read_iter+0x4d3/0x1220 [ 101.747535][ T9446] seq_read+0x3dd/0x5b0 [ 101.747535][ T9446] ? seq_read_iter+0x1220/0x1220 [ 101.747535][ T9446] ? lock_downgrade+0x6d0/0x6d0 [ 101.747535][ T9446] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 101.747535][ T9446] kernfs_fop_read+0xe9/0x590 [ 101.747535][ T9446] ? rw_verify_area+0x11d/0x350 [ 101.747535][ T9446] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 101.747535][ T9446] vfs_read+0x1b5/0x570 [ 101.747535][ T9446] ksys_read+0x12d/0x250 [ 101.747535][ T9446] ? vfs_write+0xa80/0xa80 [ 101.747535][ T9446] ? syscall_enter_from_user_mode+0x1d/0x50 [ 101.747535][ T9446] do_syscall_64+0x2d/0x70 [ 101.747535][ T9446] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 101.747535][ T9446] RIP: 0033:0x4ad4a0 [ 101.747535][ T9446] 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 [ 101.747535][ T9446] RSP: 002b:000000c000067678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 101.747535][ T9446] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004ad4a0 [ 101.747535][ T9446] RDX: 0000000000001200 RSI: 000000c0003a3300 RDI: 0000000000000003 [ 101.747535][ T9446] RBP: 000000c0000676c8 R08: 0000000000000000 R09: 0000000000000000 [ 101.747535][ T9446] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 101.747535][ T9446] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 101.747535][ T9446] Kernel Offset: disabled [ 101.747535][ T9446] Rebooting in 86400 seconds.. VM DIAGNOSIS: 12:34:51 Registers: info registers vcpu 0 RAX=000000000004b8dd RBX=ffffffff8b49bc00 RCX=ffffffff8911bf50 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=fffffbfff1693780 RSP=ffffffff8b407e40 R8 =0000000000000001 R9 =ffff88802ca35bab R10=ffffed1005946b75 R11=0000000000000000 R12=0000000000000000 R13=0000000000000000 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 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=00007f14778b8cf0 CR3=000000001a784000 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=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 1 RAX=000000000004c595 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=000000c0005b4000 CR3=000000001ffce000 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=5d3739333234342e31303120205b203a XMM02=65756c61762064696c6176206120746f XMM03=6e207369203535322065756c61762066 XMM04=6f2064616f6c205d3634343954205b5d XMM05=5d3739333234342e31303120205b203a XMM06=206e692064616f6c2d64696c61766e69 XMM07=6e69666e6f636e753d3d6a6275732035 XMM08=ffffff0000000000ff000000000000ff XMM09=00000000000000000000000000000000 XMM10=ffffff00000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 2 RAX=000000000003f8af 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=00007fad4e6a1cf0 CR3=000000001a784000 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 3 RAX=0000000000000061 RBX=0000000000000000 RCX=0000000000000000 RDX=00000000000003f8 RSI=ffffffff8419a7c1 RDI=ffffffff9040dd80 RBP=ffffffff9040dd40 RSP=ffffc9000233f6c0 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff8419a7b2 R11=000000000000001f R12=0000000000000061 R13=0000000000000000 R14=ffffffff9040dd40 R15=dffffc0000000000 RIP=ffffffff8419a7ec 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 000000c000032790 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=000000001a784000 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=000000c00024f5200000000000000001 XMM02=6574656d617261702f6d766b2f656c75 XMM03=73656761705f656775685f786e2f7372 XMM04=0000000000000009000000c0002ba400 XMM05=0000000000000005000000c0002bb797 XMM06=0000000000000007000000c0002bb7c0 XMM07=0000000000000004000000c0002bb7c8 XMM08=0000000000000007000000c0002bb7d0 XMM09=000000000000000e000000c0002bb7e0 XMM10=0000000000000005000000c0002bb7d7 XMM11=000000000000000e000000c0002bb7f0 XMM12=000000000000000b000000c0002bb800 XMM13=000000c0002ba0900000000000000001 XMM14=000000c0002b22600000000000000005 XMM15=00000000000000010000000000000001