IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 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: 3888 Comm: syz-executor.1 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:ffff88803ea67c78 EFLAGS: 00010212 RAX: 0000000020000080 RBX: ffff88803ea67d60 RCX: ffffc90001de2000 RDX: 0000000004000010 RSI: ffffffff81855c98 RDI: 0000000000000007 RBP: 0000000000000091 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000091 R11: 0000000000000001 R12: ffff88800f69fb80 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff84ca58c0 FS: 00007f2cdb413700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2cddfacaf8 CR3: 000000000f108000 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: 0033:0x7f2cdde9db19 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:00007f2cdb413188 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f2cddfb0f60 RCX: 00007f2cdde9db19 RDX: 0000000000000001 RSI: 0000000020000480 RDI: 0000000000000003 RBP: 00007f2cddef7f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe1b6b493f R14: 00007f2cdb413300 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:ffff88803ea67c78 EFLAGS: 00010212 RAX: 0000000020000080 RBX: ffff88803ea67d60 RCX: ffffc90001de2000 RDX: 0000000004000010 RSI: ffffffff81855c98 RDI: 0000000000000007 RBP: 0000000000000091 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000091 R11: 0000000000000001 R12: ffff88800f69fb80 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff84ca58c0 FS: 00007f2cdb413700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2cddfacaf8 CR3: 000000000f108000 CR4: 0000000000350ee0 ieee80211 phy16: Selected rate control algorithm 'minstrel_ht' wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready ieee80211 phy17: Selected rate control algorithm 'minstrel_ht' wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=3999 'syz-executor.0' loop0: detected capacity change from 0 to 264192 loop0: detected capacity change from 0 to 264192 tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' loop4: detected capacity change from 0 to 264192 loop0: detected capacity change from 0 to 264192 FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) hrtimer: interrupt took 19286 ns tmpfs: Bad value for 'mpol' loop4: detected capacity change from 0 to 264192 loop0: detected capacity change from 0 to 264192 FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) tmpfs: Bad value for 'mpol' loop7: detected capacity change from 0 to 264192 loop0: detected capacity change from 0 to 264192 tmpfs: Bad value for 'mpol' loop3: detected capacity change from 0 to 264192 loop5: detected capacity change from 0 to 264192 FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop4: detected capacity change from 0 to 264192 FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop2: detected capacity change from 0 to 264192 loop3: detected capacity change from 0 to 264192 loop6: detected capacity change from 0 to 264192 loop2: detected capacity change from 0 to 264192 loop7: detected capacity change from 0 to 264192 FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop3: detected capacity change from 0 to 264192 loop6: detected capacity change from 0 to 264192 loop2: detected capacity change from 0 to 264192 loop4: detected capacity change from 0 to 264192 FAT-fs (loop4): Unrecognized mount option "net/ip6_tables_targets" or missing value loop5: detected capacity change from 0 to 264192 loop1: detected capacity change from 0 to 264192 FAT-fs (loop5): Unrecognized mount option "net/ip6_tables_targets" or missing value loop1: detected capacity change from 0 to 264192 loop7: detected capacity change from 0 to 264192 FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop1: detected capacity change from 0 to 264192 loop6: detected capacity change from 0 to 264192 loop5: detected capacity change from 0 to 264192 FAT-fs (loop5): Unrecognized mount option "net/ip6_tables_targets" or missing value audit: type=1400 audit(1679914776.640:9): avc: denied { write } for pid=4123 comm="syz-executor.7" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 loop0: detected capacity change from 0 to 16127 loop0: detected capacity change from 0 to 16127 loop0: detected capacity change from 0 to 16127 I/O error, dev loop0, sector 15872 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 loop0: detected capacity change from 0 to 16127 loop0: detected capacity change from 0 to 16127 EXT4-fs warning (device sda): verify_group_input:150: Cannot add at group 32769 (only 16 groups) EXT4-fs warning (device sda): verify_group_input:150: Cannot add at group 32769 (only 16 groups) EXT4-fs warning (device sda): verify_group_input:150: Cannot add at group 32769 (only 16 groups) EXT4-fs warning (device sda): verify_group_input:150: Cannot add at group 32769 (only 16 groups) audit: type=1400 audit(1679914779.848:10): avc: denied { block_suspend } for pid=4396 comm="syz-executor.3" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 tmpfs: Bad value for 'nr_blocks' tmpfs: Bad value for 'nr_blocks' tmpfs: Bad value for 'nr_blocks' tmpfs: Bad value for 'nr_blocks' tmpfs: Bad value for 'nr_blocks' ---------------- 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)