general protection fault, probably for non-canonical address 0xdffffc0004000010: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x0000000020000080-0x0000000020000087] CPU: 1 PID: 4671 Comm: syz-executor.6 Not tainted 6.3.0-rc3-next-20230327 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:do_iter_read+0x481/0x750 Code: 00 0f 85 52 02 00 00 4d 8b 7c 24 28 e8 48 2c c6 ff 48 8b 44 24 18 80 38 00 0f 85 1c 02 00 00 48 8b 43 18 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 ef 01 00 00 48 8b 4c 24 20 48 8b 30 80 39 00 RSP: 0018:ffff88801f35fc78 EFLAGS: 00010212 RAX: 0000000020000080 RBX: ffff88801f35fd60 RCX: ffffc90007023000 RDX: 0000000004000010 RSI: ffffffff81855c98 RDI: 0000000000000007 RBP: 00000000000000cd R08: 0000000000000007 R09: 0000000000000000 R10: 00000000000000cd R11: 0000000000000001 R12: ffff888040a39680 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff84896d40 FS: 00007f9052a81700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001240 CR3: 0000000036ab2000 CR4: 0000000000350ee0 Call Trace: vfs_readv+0xe5/0x160 __x64_sys_preadv+0x233/0x310 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f905550bb19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9052a81188 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f905561ef60 RCX: 00007f905550bb19 RDX: 0000000000000001 RSI: 0000000020001240 RDI: 0000000000000003 RBP: 00007f9055565f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeee74783f R14: 00007f9052a81300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:do_iter_read+0x481/0x750 Code: 00 0f 85 52 02 00 00 4d 8b 7c 24 28 e8 48 2c c6 ff 48 8b 44 24 18 80 38 00 0f 85 1c 02 00 00 48 8b 43 18 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 ef 01 00 00 48 8b 4c 24 20 48 8b 30 80 39 00 RSP: 0018:ffff88801f35fc78 EFLAGS: 00010212 RAX: 0000000020000080 RBX: ffff88801f35fd60 RCX: ffffc90007023000 RDX: 0000000004000010 RSI: ffffffff81855c98 RDI: 0000000000000007 RBP: 00000000000000cd R08: 0000000000000007 R09: 0000000000000000 R10: 00000000000000cd R11: 0000000000000001 R12: ffff888040a39680 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff84896d40 FS: 00007f9052a81700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001240 CR3: 0000000036ab2000 CR4: 0000000000350ee0 FAT-fs (loop3): Unrecognized mount option "smackfsfloor=/dev/loop-control" or missing value FAT-fs (loop3): Unrecognized mount option "smackfsfloor=/dev/loop-control" or missing value journal_path: Lookup failure for './file1' EXT4-fs: error: could not find journal device path journal_path: Lookup failure for './file1' EXT4-fs: error: could not find journal device path journal_path: Lookup failure for './file1' EXT4-fs: error: could not find journal device path journal_path: Lookup failure for './file1' EXT4-fs: error: could not find journal device path journal_path: Lookup failure for './file1' EXT4-fs: error: could not find journal device path SELinux: Context /!/@^\#/@- is not valid (left unmapped). audit: type=1400 audit(1679917972.990:14): avc: denied { associate } for pid=4947 comm="syz-executor.5" name=6D656D66643A42DB2F89036CDE62CBB534EDBE4C59B55AE11253F547CCF3E902680BCA2896E143DF1CEA8543FB1013FA0316CD17A280A17AB47295C3409DA6F192237D67D360F7CE7ACBB31ABBC438658EB126D18AE6217F8DEA2C7178A238BF22C765064CB036EB3C24D7BAE501039472ABD44A0373AFF641BF56FA1E778DBF994997D8D2E811C404 dev="tmpfs" ino=13 scontext=system_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=filesystem permissive=1 srawcon="/!/@^\#/@-" netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium loop6: detected capacity change from 0 to 40 audit: type=1400 audit(1679917978.682:15): avc: denied { write } for pid=5208 comm="syz-executor.5" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 loop6: detected capacity change from 0 to 40 mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium ---------------- Code disassembly (best guess): 0: 00 0f add %cl,(%rdi) 2: 85 52 02 test %edx,0x2(%rdx) 5: 00 00 add %al,(%rax) 7: 4d 8b 7c 24 28 mov 0x28(%r12),%r15 c: e8 48 2c c6 ff callq 0xffc62c59 11: 48 8b 44 24 18 mov 0x18(%rsp),%rax 16: 80 38 00 cmpb $0x0,(%rax) 19: 0f 85 1c 02 00 00 jne 0x23b 1f: 48 8b 43 18 mov 0x18(%rbx),%rax 23: 48 89 c2 mov %rax,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 42 80 3c 32 00 cmpb $0x0,(%rdx,%r14,1) <-- trapping instruction 2f: 0f 85 ef 01 00 00 jne 0x224 35: 48 8b 4c 24 20 mov 0x20(%rsp),%rcx 3a: 48 8b 30 mov (%rax),%rsi 3d: 80 39 00 cmpb $0x0,(%rcx)