Warning: Permanently added '[localhost]:46367' (ECDSA) to the list of known hosts. 2020/12/27 12:06:42 fuzzer started syzkaller login: [ 96.100501][ T9163] ================================================================================ [ 96.115881][ T9163] UBSAN: invalid-load in kernel/params.c:302:33 [ 96.125956][ T9163] load of value 255 is not a valid value for type '_Bool' [ 96.139194][ T9163] CPU: 1 PID: 9163 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 96.148952][ T9163] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 96.148952][ T9163] Call Trace: [ 96.148952][ T9163] dump_stack+0x107/0x163 [ 96.148952][ T9163] ubsan_epilogue+0xb/0x5a [ 96.148952][ T9163] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 96.148952][ T9163] param_get_bool.cold+0x14/0x19 [ 96.148952][ T9163] param_attr_show+0x14a/0x220 [ 96.148952][ T9163] ? kernel_param_unlock+0x40/0x40 [ 96.148952][ T9163] module_attr_show+0x48/0x70 [ 96.148952][ T9163] ? func_ptr_is_kernel_text+0x80/0x80 [ 96.148952][ T9163] sysfs_kf_seq_show+0x1f8/0x400 [ 96.148952][ T9163] seq_read_iter+0x4d3/0x1220 [ 96.148952][ T9163] seq_read+0x3dd/0x5b0 [ 96.148952][ T9163] ? seq_read_iter+0x1220/0x1220 [ 96.148952][ T9163] ? lock_downgrade+0x6d0/0x6d0 [ 96.148952][ T9163] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 96.148952][ T9163] kernfs_fop_read+0xe9/0x590 [ 96.148952][ T9163] ? rw_verify_area+0x11d/0x350 [ 96.148952][ T9163] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 96.148952][ T9163] vfs_read+0x1b5/0x570 [ 96.148952][ T9163] ksys_read+0x12d/0x250 [ 96.148952][ T9163] ? vfs_write+0xa80/0xa80 [ 96.148952][ T9163] ? syscall_enter_from_user_mode+0x1d/0x50 [ 96.148952][ T9163] do_syscall_64+0x2d/0x70 [ 96.148952][ T9163] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 96.148952][ T9163] RIP: 0033:0x4ad4a0 [ 96.148952][ T9163] 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 [ 96.148952][ T9163] RSP: 002b:000000c000065678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 96.148952][ T9163] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004ad4a0 [ 96.148952][ T9163] RDX: 0000000000001200 RSI: 000000c0001c1300 RDI: 0000000000000003 [ 96.148952][ T9163] RBP: 000000c0000656c8 R08: 0000000000000000 R09: 0000000000000000 [ 96.148952][ T9163] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 96.148952][ T9163] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 96.428019][ T9163] ================================================================================ [ 96.438842][ T9163] Kernel panic - not syncing: panic_on_warn set ... [ 96.446870][ T9163] CPU: 1 PID: 9163 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 96.448511][ T9163] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 96.448511][ T9163] Call Trace: [ 96.448511][ T9163] dump_stack+0x107/0x163 [ 96.448511][ T9163] panic+0x343/0x77f [ 96.448511][ T9163] ? __warn_printk+0xf3/0xf3 [ 96.448511][ T9163] ? ubsan_epilogue+0x3e/0x5a [ 96.448511][ T9163] ubsan_epilogue+0x54/0x5a [ 96.448511][ T9163] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 96.448511][ T9163] param_get_bool.cold+0x14/0x19 [ 96.448511][ T9163] param_attr_show+0x14a/0x220 [ 96.448511][ T9163] ? kernel_param_unlock+0x40/0x40 [ 96.448511][ T9163] module_attr_show+0x48/0x70 [ 96.448511][ T9163] ? func_ptr_is_kernel_text+0x80/0x80 [ 96.448511][ T9163] sysfs_kf_seq_show+0x1f8/0x400 [ 96.448511][ T9163] seq_read_iter+0x4d3/0x1220 [ 96.448511][ T9163] seq_read+0x3dd/0x5b0 [ 96.448511][ T9163] ? seq_read_iter+0x1220/0x1220 [ 96.448511][ T9163] ? lock_downgrade+0x6d0/0x6d0 [ 96.448511][ T9163] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 96.448511][ T9163] kernfs_fop_read+0xe9/0x590 [ 96.448511][ T9163] ? rw_verify_area+0x11d/0x350 [ 96.448511][ T9163] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 96.448511][ T9163] vfs_read+0x1b5/0x570 [ 96.448511][ T9163] ksys_read+0x12d/0x250 [ 96.448511][ T9163] ? vfs_write+0xa80/0xa80 [ 96.448511][ T9163] ? syscall_enter_from_user_mode+0x1d/0x50 [ 96.448511][ T9163] do_syscall_64+0x2d/0x70 [ 96.448511][ T9163] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 96.448511][ T9163] RIP: 0033:0x4ad4a0 [ 96.448511][ T9163] 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 [ 96.448511][ T9163] RSP: 002b:000000c000065678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 96.448511][ T9163] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004ad4a0 [ 96.448511][ T9163] RDX: 0000000000001200 RSI: 000000c0001c1300 RDI: 0000000000000003 [ 96.448511][ T9163] RBP: 000000c0000656c8 R08: 0000000000000000 R09: 0000000000000000 [ 96.448511][ T9163] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 96.448511][ T9163] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 96.448511][ T9163] Kernel Offset: disabled [ 96.448511][ T9163] Rebooting in 86400 seconds.. VM DIAGNOSIS: 12:06:43 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=1ffff92000365f18 RCX=0000000000000000 RDX=ffff8880137d2200 RSI=ffffffff8167ce4e RDI=0000000000000003 RBP=ffffc90001b2f978 RSP=ffffc90001b2f8a0 R8 =0000000000000000 R9 =ffffffff8f5f57bf R10=ffffffff8167ce63 R11=0000000000000000 R12=0000000000000001 R13=0000000000000000 R14=0000000000000001 R15=0000000000000008 RIP=ffffffff8167ce50 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 000000c000056090 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=00007fcd71991cf0 CR3=000000002690e000 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=00000000000000003f70c6f7a0b5ed8d XMM02=000000000000000043e0000000000000 XMM03=000000c00050b8b0000000c00050b8a8 XMM04=000000c0002d00c0000000c00050b8b0 XMM05=000000c0002d0100000000c00050b8c0 XMM06=000000c0002d0480000000c0002d0440 XMM07=000000c00050b8e8000000c0002bd980 XMM08=000000c00050b978000000c00050b970 XMM09=000000c00050b988000000c00050b980 XMM10=000000c00050b998000000c00050b990 XMM11=000000c00050b9a8000000c00050b9a0 XMM12=000000c00050b9b8000000c00050b9b0 XMM13=000000c00050b9c8000000c00050b9c0 XMM14=000000c00050b9d8000000c00050b9d0 XMM15=000000c00050b9e8000000c00050b9e0 info registers vcpu 1 RAX=0000000000000033 RBX=0000000000000000 RCX=0000000000000000 RDX=00000000000003f8 RSI=ffffffff8419a7c1 RDI=ffffffff9040dd80 RBP=ffffffff9040dd40 RSP=ffffc90001b3f6c0 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff8419a7b2 R11=000000000000001f R12=0000000000000033 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 000000c000056410 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=00007f7539eb8cf0 CR3=000000002690e000 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=000000c000450a900000000000000001 XMM02=6574656d617261702f6d766b2f656c75 XMM03=73656761705f656775685f786e2f7372 XMM04=000000c0002ac680000000c0002ac678 XMM05=000000c0002ac690000000c0002ac688 XMM06=000000c0002ac6a0000000c0002ac698 XMM07=000000c0002a83a0000000c0002ac6a8 XMM08=000000c000000180000000c000045820 XMM09=000000c0003fc000000000c000109fb0 XMM10=000000c000450f70000000c00041c000 XMM11=000000c00044d450000000c00044fe10 XMM12=000000c00044d5f0000000c00044dc70 XMM13=000000c00044cc30000000c00044d790 XMM14=000000c0004511e0000000c0004508f0 XMM15=000000c000451790000000c00044d1e0 info registers vcpu 2 RAX=0000000000044a1b 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=00007fcb426eb1b0 CR3=000000002690e000 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=0000000000042215 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=0000000000f44100 CR3=000000001390a000 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=205b5d3635393532312e36392020205b XMM01=00000000000000000000000000000000 XMM02=00000000000001210000000000435455 XMM03=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM04=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM05=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM06=7220303934323d6f6e69202231616473 XMM07=00000000000000002000000000000020 XMM08=ffffff0000000000ff000000000000ff XMM09=00000000000000000000000000000000 XMM10=ffffff00000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000