new mount options do not match the existing superblock, will be ignored audit: type=1800 audit(1657456523.852:697): pid=4459 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.2" name="bus" dev="sda1" ino=14295 res=0 new mount options do not match the existing superblock, will be ignored ====================================================== new mount options do not match the existing superblock, will be ignored WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.1/4474 is trying to acquire lock: 0000000022fc51b1 (&sig->cred_guard_mutex){+.+.}, at: lock_trace fs/proc/base.c:402 [inline] 0000000022fc51b1 (&sig->cred_guard_mutex){+.+.}, at: proc_pid_syscall+0xb8/0x2f0 fs/proc/base.c:635 new mount options do not match the existing superblock, will be ignored but task is already holding lock: 0000000016e37492 (&p->lock){+.+.}, at: seq_read+0x6b/0x11c0 fs/seq_file.c:164 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&p->lock){+.+.}: seq_read+0x6b/0x11c0 fs/seq_file.c:164 proc_reg_read+0x1bd/0x2d0 fs/proc/inode.c:231 new mount options do not match the existing superblock, will be ignored do_loop_readv_writev fs/read_write.c:701 [inline] do_loop_readv_writev fs/read_write.c:688 [inline] do_iter_read+0x471/0x630 fs/read_write.c:925 vfs_readv+0xe5/0x150 fs/read_write.c:987 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x457/0xa00 fs/splice.c:417 do_splice_to+0x10e/0x160 fs/splice.c:881 splice_direct_to_actor+0x2b9/0x8d0 fs/splice.c:959 new mount options do not match the existing superblock, will be ignored do_splice_direct+0x1a7/0x270 fs/splice.c:1068 do_sendfile+0x550/0xc30 fs/read_write.c:1447 __do_sys_sendfile64 fs/read_write.c:1508 [inline] __se_sys_sendfile64+0x147/0x160 fs/read_write.c:1494 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #2 (sb_writers#3){.+.+}: new mount options do not match the existing superblock, will be ignored sb_start_write include/linux/fs.h:1579 [inline] mnt_want_write+0x3a/0xb0 fs/namespace.c:360 ovl_create_object+0x96/0x290 fs/overlayfs/dir.c:602 lookup_open+0x893/0x1a20 fs/namei.c:3235 do_last fs/namei.c:3327 [inline] path_openat+0x1094/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 new mount options do not match the existing superblock, will be ignored do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (&ovl_i_mutex_dir_key[depth]){++++}: new mount options do not match the existing superblock, will be ignored inode_lock_shared include/linux/fs.h:758 [inline] do_last fs/namei.c:3326 [inline] path_openat+0x17ec/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_open_execat+0x11d/0x5b0 fs/exec.c:853 __do_execve_file+0x1a8b/0x2360 fs/exec.c:1770 new mount options do not match the existing superblock, will be ignored do_execveat_common fs/exec.c:1879 [inline] do_execve+0x35/0x50 fs/exec.c:1896 __do_sys_execve fs/exec.c:1977 [inline] __se_sys_execve fs/exec.c:1972 [inline] __x64_sys_execve+0x7c/0xa0 fs/exec.c:1972 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe new mount options do not match the existing superblock, will be ignored -> #0 (&sig->cred_guard_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 lock_trace fs/proc/base.c:402 [inline] proc_pid_syscall+0xb8/0x2f0 fs/proc/base.c:635 proc_single_show+0xeb/0x170 fs/proc/base.c:755 new mount options do not match the existing superblock, will be ignored seq_read+0x4e0/0x11c0 fs/seq_file.c:232 do_loop_readv_writev fs/read_write.c:701 [inline] do_loop_readv_writev fs/read_write.c:688 [inline] do_iter_read+0x471/0x630 fs/read_write.c:925 vfs_readv+0xe5/0x150 fs/read_write.c:987 do_preadv fs/read_write.c:1071 [inline] __do_sys_preadv fs/read_write.c:1121 [inline] __se_sys_preadv fs/read_write.c:1116 [inline] __x64_sys_preadv+0x22b/0x310 fs/read_write.c:1116 new mount options do not match the existing superblock, will be ignored do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: new mount options do not match the existing superblock, will be ignored Chain exists of: &sig->cred_guard_mutex --> sb_writers#3 --> &p->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&p->lock); new mount options do not match the existing superblock, will be ignored lock(sb_writers#3); lock(&p->lock); lock(&sig->cred_guard_mutex); *** DEADLOCK *** 1 lock held by syz-executor.1/4474: #0: 0000000016e37492 (&p->lock){+.+.}, at: seq_read+0x6b/0x11c0 fs/seq_file.c:164 new mount options do not match the existing superblock, will be ignored stack backtrace: CPU: 1 PID: 4474 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 new mount options do not match the existing superblock, will be ignored print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2420 [inline] __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416 new mount options do not match the existing superblock, will be ignored new mount options do not match the existing superblock, will be ignored lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 new mount options do not match the existing superblock, will be ignored new mount options do not match the existing superblock, will be ignored lock_trace fs/proc/base.c:402 [inline] proc_pid_syscall+0xb8/0x2f0 fs/proc/base.c:635 new mount options do not match the existing superblock, will be ignored proc_single_show+0xeb/0x170 fs/proc/base.c:755 new mount options do not match the existing superblock, will be ignored seq_read+0x4e0/0x11c0 fs/seq_file.c:232 do_loop_readv_writev fs/read_write.c:701 [inline] do_loop_readv_writev fs/read_write.c:688 [inline] do_iter_read+0x471/0x630 fs/read_write.c:925 vfs_readv+0xe5/0x150 fs/read_write.c:987 do_preadv fs/read_write.c:1071 [inline] __do_sys_preadv fs/read_write.c:1121 [inline] __se_sys_preadv fs/read_write.c:1116 [inline] __x64_sys_preadv+0x22b/0x310 fs/read_write.c:1116 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fec081e8109 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fec06b1b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007fec082fb100 RCX: 00007fec081e8109 RDX: 0000000000000333 RSI: 00000000200017c0 RDI: 0000000000000004 RBP: 00007fec0824205d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc4cafa40f R14: 00007fec06b1b300 R15: 0000000000022000 batman_adv: Cannot find parent device batman_adv: batadv0: Adding interface: gretap1 batman_adv: batadv0: The MTU of interface gretap1 is too small (1462) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. overlayfs: failed to resolve './fil': -2 batman_adv: batadv0: Not using interface gretap1 (retrying later): interface not active overlayfs: failed to resolve './fil': -2 batman_adv: Cannot find parent device batman_adv: Cannot find parent device tmpfs: No value for mount option './file1' batman_adv: batadv0: Adding interface: gretap3 batman_adv: batadv0: The MTU of interface gretap3 is too small (1462) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. overlayfs: failed to resolve './file1': -2 batman_adv: batadv0: Not using interface gretap3 (retrying later): interface not active audit: type=1804 audit(1657456526.132:698): pid=4676 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir1559823545/syzkaller.FCvS7L/361/bus" dev="sda1" ino=14570 res=1 audit: type=1800 audit(1657456526.132:699): pid=4676 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=14570 res=0 autofs4:pid:4698:autofs_fill_super: called with bogus options autofs4:pid:4717:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4767:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4770:autofs_fill_super: called with bogus options autofs4:pid:4814:autofs_fill_super: called with bogus options autofs4:pid:4839:autofs_fill_super: called with bogus options autofs4:pid:4851:autofs_fill_super: called with bogus options audit: type=1804 audit(1657456528.142:700): pid=4852 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir1559823545/syzkaller.FCvS7L/363/bus" dev="sda1" ino=14183 res=1 autofs4:pid:4875:autofs_fill_super: called with bogus options autofs4:pid:4882:autofs_fill_super: called with bogus options audit: type=1800 audit(1657456528.142:701): pid=4852 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=14183 res=0 audit: type=1800 audit(1657456528.592:702): pid=4917 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=14183 res=0 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 audit: type=1800 audit(1657456528.662:703): pid=4924 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=14183 res=0 dccp_close: ABORT with 149 bytes unread audit: type=1800 audit(1657456529.482:704): pid=4978 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=15130 res=0 autofs4:pid:4988:autofs_fill_super: called with bogus options dccp_close: ABORT with 149 bytes unread audit: type=1800 audit(1657456529.622:705): pid=5004 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=14049 res=0 autofs4:pid:5005:autofs_fill_super: called with bogus options wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 audit: type=1800 audit(1657456529.682:706): pid=5007 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=14049 res=0 audit: type=1800 audit(1657456530.462:707): pid=5052 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=15149 res=0 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. autofs4:pid:5060:autofs_fill_super: called with bogus options audit: type=1800 audit(1657456530.492:708): pid=5052 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=15149 res=0 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. audit: type=1800 audit(1657456531.242:709): pid=5126 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=14550 res=0 audit: type=1800 audit(1657456531.272:710): pid=5126 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=14550 res=0 BTRFS info (device loop1): unrecognized mount option 'nosace_cache' BTRFS error (device loop1): open_ctree failed overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. autofs4:pid:5207:autofs_fill_super: called with bogus options BTRFS info (device loop1): unrecognized mount option 'nosace_cache' BTRFS error (device loop1): open_ctree failed FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 5216 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 __should_failslab+0x115/0x180 mm/failslab.c:32 should_failslab+0x5/0x10 mm/slab_common.c:1590 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc_track_caller+0x2a6/0x3c0 mm/slab.c:3742 memdup_user+0x22/0xb0 mm/util.c:160 strndup_user+0x70/0x120 mm/util.c:217 copy_mount_string fs/namespace.c:2726 [inline] ksys_mount+0x34/0x130 fs/namespace.c:3023 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f1cc47e1109 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1cc3156168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f1cc48f3f60 RCX: 00007f1cc47e1109 RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000000000000 RBP: 00007f1cc31561d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc96c38b9f R14: 00007f1cc3156300 R15: 0000000000022000 IPVS: ftp: loaded support on port[0] = 21 BTRFS info (device loop1): unrecognized mount option 'nosace_cache' BTRFS error (device loop1): open_ctree failed FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 IPVS: ftp: loaded support on port[0] = 21 CPU: 0 PID: 5294 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 __should_failslab+0x115/0x180 mm/failslab.c:32 should_failslab+0x5/0x10 mm/slab_common.c:1590 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] kmem_cache_alloc+0x277/0x370 mm/slab.c:3557 getname_flags+0xce/0x590 fs/namei.c:140 user_path_at_empty+0x2a/0x50 fs/namei.c:2609 user_path include/linux/namei.h:62 [inline] do_mount+0x147/0x2f50 fs/namespace.c:2762 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f1cc47e1109 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1cc3156168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f1cc48f3f60 RCX: 00007f1cc47e1109 RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000000000000 RBP: 00007f1cc31561d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc96c38b9f R14: 00007f1cc3156300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 CPU: 1 PID: 5338 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3088 [inline] prepare_alloc_pages mm/page_alloc.c:4346 [inline] __alloc_pages_nodemask+0x239/0x2890 mm/page_alloc.c:4393 __alloc_pages include/linux/gfp.h:496 [inline] __alloc_pages_node include/linux/gfp.h:509 [inline] kmem_getpages mm/slab.c:1412 [inline] cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682 cache_alloc_refill+0x273/0x340 mm/slab.c:3049 ____cache_alloc mm/slab.c:3132 [inline] __do_cache_alloc mm/slab.c:3354 [inline] slab_alloc mm/slab.c:3389 [inline] kmem_cache_alloc+0x346/0x370 mm/slab.c:3557 getname_flags+0xce/0x590 fs/namei.c:140 user_path_at_empty+0x2a/0x50 fs/namei.c:2609 user_path include/linux/namei.h:62 [inline] do_mount+0x147/0x2f50 fs/namespace.c:2762 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f1cc47e1109 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1cc3156168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f1cc48f3f60 RCX: 00007f1cc47e1109 RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000000000000 RBP: 00007f1cc31561d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc96c38b9f R14: 00007f1cc3156300 R15: 0000000000022000 IPVS: ftp: loaded support on port[0] = 21 autofs4:pid:5338:autofs_fill_super: called with bogus options kauditd_printk_skb: 4 callbacks suppressed audit: type=1800 audit(1657456533.573:715): pid=5366 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=13921 res=0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 5373 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0xa/0xf lib/fault-inject.c:149 audit: type=1800 audit(1657456533.573:716): pid=5366 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=13921 res=0 __should_failslab+0x115/0x180 mm/failslab.c:32 should_failslab+0x5/0x10 mm/slab_common.c:1590 slab_pre_alloc_hook mm/slab.h:424 [inline] slab_alloc mm/slab.c:3383 [inline] kmem_cache_alloc_trace+0x284/0x380 mm/slab.c:3623 kmalloc include/linux/slab.h:515 [inline] kzalloc include/linux/slab.h:709 [inline] alloc_super fs/super.c:200 [inline] sget_userns+0x122/0xcd0 fs/super.c:519 sget+0x102/0x140 fs/super.c:570 mount_nodev+0x2c/0x110 fs/super.c:1199 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f1cc47e1109 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1cc3156168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f1cc48f3f60 RCX: 00007f1cc47e1109 RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000000000000 RBP: 00007f1cc31561d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc96c38b9f R14: 00007f1cc3156300 R15: 0000000000022000