[ 97.168454][ T49] audit: type=1400 audit(1609073381.395:41): avc: denied { map } for pid=9783 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '[localhost]:17339' (ECDSA) to the list of known hosts. [ 102.124370][ T49] audit: type=1400 audit(1609073386.355:42): avc: denied { map } for pid=9797 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 12:49:46 fuzzer started [ 102.799137][ T9810] ================================================================================ [ 102.814149][ T9810] UBSAN: invalid-load in kernel/params.c:302:33 [ 102.822519][ T9810] load of value 255 is not a valid value for type '_Bool' [ 102.834627][ T9810] CPU: 0 PID: 9810 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 102.844265][ T9810] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 102.844265][ T9810] Call Trace: [ 102.844265][ T9810] dump_stack+0x107/0x163 [ 102.844265][ T9810] ubsan_epilogue+0xb/0x5a [ 102.844265][ T9810] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 102.844265][ T9810] param_get_bool.cold+0x14/0x19 [ 102.844265][ T9810] param_attr_show+0x14a/0x220 [ 102.844265][ T9810] ? kernel_param_unlock+0x40/0x40 [ 102.844265][ T9810] module_attr_show+0x48/0x70 [ 102.844265][ T9810] ? func_ptr_is_kernel_text+0x80/0x80 [ 102.844265][ T9810] sysfs_kf_seq_show+0x1f8/0x400 [ 102.844265][ T9810] seq_read_iter+0x4d3/0x1220 [ 102.844265][ T9810] seq_read+0x3dd/0x5b0 [ 102.844265][ T9810] ? seq_read_iter+0x1220/0x1220 [ 102.844265][ T9810] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 102.844265][ T9810] ? selinux_file_permission+0xcc/0x5a0 [ 102.844265][ T9810] kernfs_fop_read+0xe9/0x590 [ 102.844265][ T9810] ? rw_verify_area+0x11d/0x350 [ 102.844265][ T9810] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 102.844265][ T9810] vfs_read+0x1b5/0x570 [ 102.844265][ T9810] ksys_read+0x12d/0x250 [ 102.844265][ T9810] ? vfs_write+0xa80/0xa80 [ 102.844265][ T9810] ? syscall_enter_from_user_mode+0x1d/0x50 [ 102.844265][ T9810] do_syscall_64+0x2d/0x70 [ 102.844265][ T9810] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 102.844265][ T9810] RIP: 0033:0x4ad4a0 [ 102.844265][ T9810] 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 [ 102.844265][ T9810] RSP: 002b:000000c000069678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 102.844265][ T9810] RAX: ffffffffffffffda RBX: 000000c00001e500 RCX: 00000000004ad4a0 [ 102.844265][ T9810] RDX: 0000000000001200 RSI: 000000c000403300 RDI: 0000000000000003 [ 102.844265][ T9810] RBP: 000000c0000696c8 R08: 0000000000000000 R09: 0000000000000000 [ 102.844265][ T9810] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 102.844265][ T9810] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 103.116219][ T9810] ================================================================================ [ 103.129425][ T9810] Kernel panic - not syncing: panic_on_warn set ... [ 103.137839][ T9810] CPU: 1 PID: 9810 Comm: syz-fuzzer Not tainted 5.10.0-syzkaller #0 [ 103.138923][ T9810] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 103.138923][ T9810] Call Trace: [ 103.138923][ T9810] dump_stack+0x107/0x163 [ 103.138923][ T9810] panic+0x343/0x77f [ 103.138923][ T9810] ? __warn_printk+0xf3/0xf3 [ 103.138923][ T9810] ? ubsan_epilogue+0x3e/0x5a [ 103.138923][ T9810] ubsan_epilogue+0x54/0x5a [ 103.138923][ T9810] __ubsan_handle_load_invalid_value.cold+0x62/0x6c [ 103.138923][ T9810] param_get_bool.cold+0x14/0x19 [ 103.138923][ T9810] param_attr_show+0x14a/0x220 [ 103.138923][ T9810] ? kernel_param_unlock+0x40/0x40 [ 103.138923][ T9810] module_attr_show+0x48/0x70 [ 103.138923][ T9810] ? func_ptr_is_kernel_text+0x80/0x80 [ 103.138923][ T9810] sysfs_kf_seq_show+0x1f8/0x400 [ 103.138923][ T9810] seq_read_iter+0x4d3/0x1220 [ 103.138923][ T9810] seq_read+0x3dd/0x5b0 [ 103.138923][ T9810] ? seq_read_iter+0x1220/0x1220 [ 103.138923][ T9810] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 103.138923][ T9810] ? selinux_file_permission+0xcc/0x5a0 [ 103.138923][ T9810] kernfs_fop_read+0xe9/0x590 [ 103.138923][ T9810] ? rw_verify_area+0x11d/0x350 [ 103.138923][ T9810] ? kernfs_vma_page_mkwrite+0x230/0x230 [ 103.138923][ T9810] vfs_read+0x1b5/0x570 [ 103.138923][ T9810] ksys_read+0x12d/0x250 [ 103.138923][ T9810] ? vfs_write+0xa80/0xa80 [ 103.138923][ T9810] ? syscall_enter_from_user_mode+0x1d/0x50 [ 103.138923][ T9810] do_syscall_64+0x2d/0x70 [ 103.138923][ T9810] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 103.138923][ T9810] RIP: 0033:0x4ad4a0 [ 103.138923][ T9810] 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 [ 103.138923][ T9810] RSP: 002b:000000c000069678 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 103.138923][ T9810] RAX: ffffffffffffffda RBX: 000000c00001e500 RCX: 00000000004ad4a0 [ 103.138923][ T9810] RDX: 0000000000001200 RSI: 000000c000403300 RDI: 0000000000000003 [ 103.138923][ T9810] RBP: 000000c0000696c8 R08: 0000000000000000 R09: 0000000000000000 [ 103.138923][ T9810] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 103.138923][ T9810] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000005 [ 103.138923][ T9810] Kernel Offset: disabled [ 103.138923][ T9810] Rebooting in 86400 seconds.. VM DIAGNOSIS: 12:49:47 Registers: info registers vcpu 0 RAX=0000000000000030 RBX=0000000000000000 RCX=0000000000000000 RDX=00000000000003f8 RSI=ffffffff841a5371 RDI=ffffffff9042abe0 RBP=ffffffff9042aba0 RSP=ffffc900008976c0 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff841a5362 R11=000000000000001f R12=0000000000000030 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 000000c00005a790 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=00007fb9e74cacf0 CR3=0000000028ddc000 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=7865206f7420676e6979727420726f72 XMM05=7865203a2773756c7031636327206365 XMM06=69662068637573206f4e203a70766365 XMM07=0a79726f74636572696420726f20656c XMM08=00000000000000000000000000000000 XMM09=000000000045c0c10000000000000000 XMM10=000000c000088c80000000c000156f20 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=29286e69616d20746e690a64656c6c61 XMM14=6f6c6c6548222866746e697270207b20 XMM15=0a7d203b29226e5c21646c726f57202c info registers vcpu 1 RAX=0000000000044695 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=0000000000a61b2b CR3=000000001f413000 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=0a33333a3230333a632e736d61726170 XMM01=5d3934313431382e32303120205b203a XMM02=6c656e72656b206e692064616f6c2d64 XMM03=696c61766e69203a4e41534255205d30 XMM04=31383954205b5d3934313431382e3230 XMM05=5d3934313431382e32303120205b203a XMM06=3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d XMM07=5d3037333432312e32303120205b203a XMM08=ffffff0000000000ff000000000000ff XMM09=00000000000000000000000000000000 XMM10=ffffff00000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 2 RAX=0000000000032103 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=0000000000f44100 CR3=0000000028ddc000 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=3fe39b59b25e6686000000000041b00f XMM05=00000000000000000000000000000000 XMM06=0000000000000000000000c0002c0660 XMM07=0000000000b8f4000000000000000000 XMM08=0000000000b8f4000000000000b7dbc0 XMM09=00000000000000000000000000b7dbc8 XMM10=000000c0000700c0000000000045c0c1 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=29286e69616d20746e690a64656c6c61 XMM14=6f6c6c6548222866746e697270207b20 XMM15=0a7d203b29226e5c21646c726f57202c info registers vcpu 3 RAX=0000000000040793 RBX=ffff8880112e0400 RCX=ffffffff8912cca0 RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000000 RBP=ffffed100225c080 RSP=ffffc9000043fdf8 R8 =0000000000000001 R9 =ffff88802cd35c6b R10=ffffed10059a6b8d R11=0000000000000000 R12=0000000000000003 R13=0000000000000003 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 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=00007f1cc84f8cf0 CR3=0000000028ddc000 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