RDX: 0000000000000000 RSI: 0000000020000800 RDI: 00000000200007c0 RBP: 00007fc4606fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc358e2c9f R14: 00007fc4606fd300 R15: 0000000000022000 ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.4/16509 is trying to acquire lock: 000000008467a73f (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] 000000008467a73f (sb_writers#3){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 but task is already holding lock: 0000000005a6764e (&iint->mutex){+.+.}, at: process_measurement+0x316/0x1440 security/integrity/ima/ima_main.c:224 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&iint->mutex){+.+.}: process_measurement+0x316/0x1440 security/integrity/ima/ima_main.c:224 ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:391 do_last fs/namei.c:3425 [inline] path_openat+0x7e4/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 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 -> #0 (sb_writers#3){.+.+}: percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] __sb_start_write+0x6e/0x2a0 fs/super.c:1366 sb_start_write include/linux/fs.h:1579 [inline] mnt_want_write+0x3a/0xb0 fs/namespace.c:360 ovl_maybe_copy_up+0x11f/0x190 fs/overlayfs/copy_up.c:888 overlayfs: failed to resolve './file0': -2 ovl_open+0xb4/0x260 fs/overlayfs/file.c:126 do_dentry_open+0x4aa/0x1160 fs/open.c:796 vfs_open fs/open.c:902 [inline] dentry_open+0x132/0x1d0 fs/open.c:918 ima_calc_file_hash+0x628/0x8a0 security/integrity/ima/ima_crypto.c:435 ima_collect_measurement+0x4c4/0x570 security/integrity/ima/ima_api.c:231 process_measurement+0xddd/0x1440 security/integrity/ima/ima_main.c:284 ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:391 do_last fs/namei.c:3425 [inline] path_openat+0x7e4/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 overlayfs: failed to resolve './file1': -2 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: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&iint->mutex); lock(sb_writers#3); lock(&iint->mutex); lock(sb_writers#3); *** DEADLOCK *** 1 lock held by syz-executor.4/16509: #0: 0000000005a6764e (&iint->mutex){+.+.}, at: process_measurement+0x316/0x1440 security/integrity/ima/ima_main.c:224 stack backtrace: CPU: 1 PID: 16509 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 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 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] __sb_start_write+0x6e/0x2a0 fs/super.c:1366 sb_start_write include/linux/fs.h:1579 [inline] mnt_want_write+0x3a/0xb0 fs/namespace.c:360 ovl_maybe_copy_up+0x11f/0x190 fs/overlayfs/copy_up.c:888 ovl_open+0xb4/0x260 fs/overlayfs/file.c:126 do_dentry_open+0x4aa/0x1160 fs/open.c:796 vfs_open fs/open.c:902 [inline] dentry_open+0x132/0x1d0 fs/open.c:918 ima_calc_file_hash+0x628/0x8a0 security/integrity/ima/ima_crypto.c:435 ima_collect_measurement+0x4c4/0x570 security/integrity/ima/ima_api.c:231 process_measurement+0xddd/0x1440 security/integrity/ima/ima_main.c:284 ima_file_check+0xb9/0x100 security/integrity/ima/ima_main.c:391 do_last fs/namei.c:3425 [inline] path_openat+0x7e4/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 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 RIP: 0033:0x7fb33c0995a9 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:00007fb33a60c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fb33c1b9f80 RCX: 00007fb33c0995a9 RDX: 0000000000000007 RSI: 0000000020002040 RDI: ffffffffffffff9c RBP: 00007fb33c0f47b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffec1559a8f R14: 00007fb33a60c300 R15: 0000000000022000 syz-executor.4 (16509) used greatest stack depth: 22024 bytes left overlayfs: failed to resolve './file': -2 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. 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. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 16559 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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+0x2ab/0x3c0 mm/slab.c:3736 kmalloc_array include/linux/slab.h:637 [inline] kcalloc include/linux/slab.h:648 [inline] ovl_lookup+0x646/0x1a00 fs/overlayfs/namei.c:889 __lookup_hash+0x117/0x180 fs/namei.c:1547 do_renameat2+0x6a2/0xc70 fs/namei.c:4581 __do_sys_rename fs/namei.c:4675 [inline] __se_sys_rename fs/namei.c:4673 [inline] __x64_sys_rename+0x5d/0x80 fs/namei.c:4673 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc46218a5a9 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:00007fc4606fd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fc4622aaf80 RCX: 00007fc46218a5a9 RDX: 0000000000000000 RSI: 0000000020000800 RDI: 00000000200007c0 RBP: 00007fc4606fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc358e2c9f R14: 00007fc4606fd300 R15: 0000000000022000 overlayfs: failed to resolve './file': -2 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. 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. 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. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 16629 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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 __d_alloc+0x2b/0xa10 fs/dcache.c:1612 d_alloc+0x4a/0x230 fs/dcache.c:1696 d_alloc_parallel+0xeb/0x19e0 fs/dcache.c:2443 __lookup_slow+0x18d/0x4a0 fs/namei.c:1655 lookup_slow fs/namei.c:1689 [inline] lookup_one_len_unlocked+0x120/0x140 fs/namei.c:2573 ovl_lookup_single+0x60/0x920 fs/overlayfs/namei.c:206 ovl_lookup_layer+0x3bd/0x440 fs/overlayfs/namei.c:292 ovl_lookup+0x44b/0x1a00 fs/overlayfs/namei.c:845 __lookup_hash+0x117/0x180 fs/namei.c:1547 do_renameat2+0x6a2/0xc70 fs/namei.c:4581 __do_sys_rename fs/namei.c:4675 [inline] __se_sys_rename fs/namei.c:4673 [inline] __x64_sys_rename+0x5d/0x80 fs/namei.c:4673 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc46218a5a9 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:00007fc4606fd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fc4622aaf80 RCX: 00007fc46218a5a9 RDX: 0000000000000000 RSI: 0000000020000800 RDI: 00000000200007c0 RBP: 00007fc4606fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc358e2c9f R14: 00007fc4606fd300 R15: 0000000000022000 overlayfs: failed to resolve './file0': -2 overlayfs: failed to resolve './file0': -2 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. overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 16690 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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+0x2ab/0x3c0 mm/slab.c:3736 kmalloc_array include/linux/slab.h:637 [inline] kcalloc include/linux/slab.h:648 [inline] ovl_lookup+0x646/0x1a00 fs/overlayfs/namei.c:889 __lookup_hash+0x117/0x180 fs/namei.c:1547 do_renameat2+0x6a2/0xc70 fs/namei.c:4581 __do_sys_rename fs/namei.c:4675 [inline] __se_sys_rename fs/namei.c:4673 [inline] __x64_sys_rename+0x5d/0x80 fs/namei.c:4673 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc46218a5a9 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:00007fc4606fd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fc4622aaf80 RCX: 00007fc46218a5a9 RDX: 0000000000000000 RSI: 0000000020000800 RDI: 00000000200007c0 RBP: 00007fc4606fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc358e2c9f R14: 00007fc4606fd300 R15: 0000000000022000 overlayfs: failed to resolve './file0': -2 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. 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. overlayfs: failed to resolve './file0': -2 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. CPU: 0 PID: 16739 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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 syz-executor.4 (16744) used greatest stack depth: 21240 bytes left __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 __d_alloc+0x2b/0xa10 fs/dcache.c:1612 d_alloc+0x4a/0x230 fs/dcache.c:1696 d_alloc_parallel+0xeb/0x19e0 fs/dcache.c:2443 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. __lookup_slow+0x18d/0x4a0 fs/namei.c:1655 lookup_slow fs/namei.c:1689 [inline] lookup_one_len_unlocked+0x120/0x140 fs/namei.c:2573 ovl_lookup_single+0x60/0x920 fs/overlayfs/namei.c:206 ovl_lookup_layer+0x3bd/0x440 fs/overlayfs/namei.c:292 ovl_lookup+0x729/0x1a00 fs/overlayfs/namei.c:903 __lookup_hash+0x117/0x180 fs/namei.c:1547 do_renameat2+0x6a2/0xc70 fs/namei.c:4581 __do_sys_rename fs/namei.c:4675 [inline] __se_sys_rename fs/namei.c:4673 [inline] __x64_sys_rename+0x5d/0x80 fs/namei.c:4673 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc46218a5a9 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:00007fc4606fd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fc4622aaf80 RCX: 00007fc46218a5a9 RDX: 0000000000000000 RSI: 0000000020000800 RDI: 00000000200007c0 RBP: 00007fc4606fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc358e2c9f R14: 00007fc4606fd300 R15: 0000000000022000 overlayfs: failed to resolve './file0': -2 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. overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. overlayfs: failed to resolve './file0`Z&k>an%ߤbSHi Ν耮Vqjq*': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 16817 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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+0x2ab/0x3c0 mm/slab.c:3736 kmalloc_array include/linux/slab.h:637 [inline] kcalloc include/linux/slab.h:648 [inline] squashfs_read_data+0x161/0x13a0 fs/squashfs/block.c:100 squashfs_cache_get+0x4a7/0xd50 fs/squashfs/cache.c:123 squashfs_read_metadata+0x134/0x460 fs/squashfs/cache.c:357 squashfs_lookup+0x795/0xd00 fs/squashfs/namei.c:175 __lookup_slow+0x246/0x4a0 fs/namei.c:1672 lookup_slow fs/namei.c:1689 [inline] lookup_one_len_unlocked+0x120/0x140 fs/namei.c:2573 ovl_lookup_single+0x60/0x920 fs/overlayfs/namei.c:206 ovl_lookup_layer+0x3bd/0x440 fs/overlayfs/namei.c:292 ovl_lookup+0x729/0x1a00 fs/overlayfs/namei.c:903 __lookup_hash+0x117/0x180 fs/namei.c:1547 do_renameat2+0x6a2/0xc70 fs/namei.c:4581 __do_sys_rename fs/namei.c:4675 [inline] __se_sys_rename fs/namei.c:4673 [inline] __x64_sys_rename+0x5d/0x80 fs/namei.c:4673 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc46218a5a9 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:00007fc4606fd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fc4622aaf80 RCX: 00007fc46218a5a9 RDX: 0000000000000000 RSI: 0000000020000800 RDI: 00000000200007c0 RBP: 00007fc4606fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc358e2c9f R14: 00007fc4606fd300 R15: 0000000000022000 SQUASHFS error: Unable to read metadata cache entry [13e] SQUASHFS error: Unable to read directory block [13e:26] SQUASHFS error: Unable to read metadata cache entry [13e] overlayfs: failed to resolve './file0': -2 SQUASHFS error: Unable to read metadata cache entry [13e] SQUASHFS error: Unable to read directory block [13e:26] SQUASHFS error: Unable to read directory block [13e:26] SQUASHFS error: Unable to read metadata cache entry [13e] SQUASHFS error: Unable to read directory block [13e:26] 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. 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. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 overlayfs: failed to resolve './file0': -2 CPU: 0 PID: 16849 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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_trace+0x284/0x380 mm/slab.c:3623 kmalloc include/linux/slab.h:515 [inline] get_dir_index_using_name fs/squashfs/namei.c:89 [inline] squashfs_lookup+0x418/0xd00 fs/squashfs/namei.c:166 __lookup_slow+0x246/0x4a0 fs/namei.c:1672 lookup_slow fs/namei.c:1689 [inline] lookup_one_len_unlocked+0x120/0x140 fs/namei.c:2573 overlayfs: failed to resolve './file0`Z&k>an%ߤbSHi Ν耮Vqjq*': -2 ovl_lookup_single+0x60/0x920 fs/overlayfs/namei.c:206 ovl_lookup_layer+0x3bd/0x440 fs/overlayfs/namei.c:292 ovl_lookup+0x729/0x1a00 fs/overlayfs/namei.c:903 __lookup_hash+0x117/0x180 fs/namei.c:1547 do_renameat2+0x6a2/0xc70 fs/namei.c:4581 __do_sys_rename fs/namei.c:4675 [inline] __se_sys_rename fs/namei.c:4673 [inline] __x64_sys_rename+0x5d/0x80 fs/namei.c:4673 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc46218a5a9 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:00007fc4606fd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fc4622aaf80 RCX: 00007fc46218a5a9 RDX: 0000000000000000 RSI: 0000000020000800 RDI: 00000000200007c0 RBP: 00007fc4606fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc358e2c9f R14: 00007fc4606fd300 R15: 0000000000022000 SQUASHFS error: Failed to allocate squashfs_dir_index overlayfs: unrecognized mount option "uPpe_" or missing value 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. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 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. CPU: 1 PID: 16912 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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+0x2ab/0x3c0 mm/slab.c:3736 kmalloc_array include/linux/slab.h:637 [inline] kcalloc include/linux/slab.h:648 [inline] squashfs_read_data+0x161/0x13a0 fs/squashfs/block.c:100 squashfs_cache_get+0x4a7/0xd50 fs/squashfs/cache.c:123 squashfs_read_metadata+0x134/0x460 fs/squashfs/cache.c:357 squashfs_xattr_lookup+0x182/0x2e0 fs/squashfs/xattr_id.c:56 squashfs_read_inode+0x5e3/0x1b40 fs/squashfs/inode.c:408 overlayfs: unrecognized mount option "uPpe_" or missing value squashfs_iget+0xcf/0x130 fs/squashfs/inode.c:98 squashfs_lookup+0xa6b/0xd00 fs/squashfs/namei.c:225 __lookup_slow+0x246/0x4a0 fs/namei.c:1672 lookup_slow fs/namei.c:1689 [inline] lookup_one_len_unlocked+0x120/0x140 fs/namei.c:2573 ovl_lookup_single+0x60/0x920 fs/overlayfs/namei.c:206 ovl_lookup_layer+0x3bd/0x440 fs/overlayfs/namei.c:292 ovl_lookup+0x729/0x1a00 fs/overlayfs/namei.c:903 __lookup_hash+0x117/0x180 fs/namei.c:1547 do_renameat2+0x6a2/0xc70 fs/namei.c:4581 __do_sys_rename fs/namei.c:4675 [inline] __se_sys_rename fs/namei.c:4673 [inline] __x64_sys_rename+0x5d/0x80 fs/namei.c:4673 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc46218a5a9 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:00007fc4606fd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fc4622aaf80 RCX: 00007fc46218a5a9 RDX: 0000000000000000 RSI: 0000000020000800 RDI: 00000000200007c0 RBP: 00007fc4606fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc358e2c9f R14: 00007fc4606fd300 R15: 0000000000022000 SQUASHFS error: Unable to read metadata cache entry [1dc] SQUASHFS error: Unable to read inode 0xa6 SQUASHFS error: Unable to read metadata cache entry [1dc] SQUASHFS error: Unable to read inode 0xa6 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. overlayfs: unrecognized mount option "uPpe_" or missing value 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. overlayfs: failed to resolve './file0': -2 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 16981 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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 squashfs_alloc_inode+0x18/0x40 fs/squashfs/super.c:470 alloc_inode+0x5d/0x180 fs/inode.c:211 iget_locked+0x193/0x480 fs/inode.c:1176 squashfs_iget+0x1f/0x130 fs/squashfs/inode.c:88 squashfs_lookup+0xa6b/0xd00 fs/squashfs/namei.c:225 __lookup_slow+0x246/0x4a0 fs/namei.c:1672 overlayfs: missing 'lowerdir' lookup_slow fs/namei.c:1689 [inline] lookup_one_len_unlocked+0x120/0x140 fs/namei.c:2573 ovl_lookup_single+0x60/0x920 fs/overlayfs/namei.c:206 ovl_lookup_layer+0x3bd/0x440 fs/overlayfs/namei.c:292 ovl_lookup+0x729/0x1a00 fs/overlayfs/namei.c:903 __lookup_hash+0x117/0x180 fs/namei.c:1547 do_renameat2+0x6a2/0xc70 fs/namei.c:4581 __do_sys_rename fs/namei.c:4675 [inline] __se_sys_rename fs/namei.c:4673 [inline] __x64_sys_rename+0x5d/0x80 fs/namei.c:4673 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc46218a5a9 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:00007fc4606fd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fc4622aaf80 RCX: 00007fc46218a5a9 RDX: 0000000000000000 RSI: 0000000020000800 RDI: 00000000200007c0 RBP: 00007fc4606fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc358e2c9f R14: 00007fc4606fd300 R15: 0000000000022000 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. 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. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 17010 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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+0x2ab/0x3c0 mm/slab.c:3736 kmalloc_array include/linux/slab.h:637 [inline] kcalloc include/linux/slab.h:648 [inline] squashfs_read_data+0x161/0x13a0 fs/squashfs/block.c:100 squashfs_cache_get+0x4a7/0xd50 fs/squashfs/cache.c:123 squashfs_read_metadata+0x134/0x460 fs/squashfs/cache.c:357 squashfs_xattr_lookup+0x182/0x2e0 fs/squashfs/xattr_id.c:56 squashfs_read_inode+0x5e3/0x1b40 fs/squashfs/inode.c:408 squashfs_iget+0xcf/0x130 fs/squashfs/inode.c:98 squashfs_lookup+0xa6b/0xd00 fs/squashfs/namei.c:225 __lookup_slow+0x246/0x4a0 fs/namei.c:1672 lookup_slow fs/namei.c:1689 [inline] lookup_one_len_unlocked+0x120/0x140 fs/namei.c:2573 ovl_lookup_single+0x60/0x920 fs/overlayfs/namei.c:206 ovl_lookup_layer+0x3bd/0x440 fs/overlayfs/namei.c:292 ovl_lookup+0x729/0x1a00 fs/overlayfs/namei.c:903 __lookup_hash+0x117/0x180 fs/namei.c:1547 do_renameat2+0x6a2/0xc70 fs/namei.c:4581 __do_sys_rename fs/namei.c:4675 [inline] __se_sys_rename fs/namei.c:4673 [inline] __x64_sys_rename+0x5d/0x80 fs/namei.c:4673 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc46218a5a9 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:00007fc4606fd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fc4622aaf80 RCX: 00007fc46218a5a9 RDX: 0000000000000000 RSI: 0000000020000800 RDI: 00000000200007c0 RBP: 00007fc4606fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc358e2c9f R14: 00007fc4606fd300 R15: 0000000000022000 overlayfs: missing 'lowerdir' SQUASHFS error: Unable to read metadata cache entry [1dc] SQUASHFS error: Unable to read inode 0xa6 SQUASHFS error: Unable to read metadata cache entry [1dc] SQUASHFS error: Unable to read inode 0xa6 overlayfs: failed to resolve './file0': -2 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. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 overlayfs: missing 'lowerdir' overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. CPU: 0 PID: 17062 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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+0x2ab/0x3c0 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] squashfs_xattr_get fs/squashfs/xattr.c:129 [inline] squashfs_xattr_handler_get+0x1d6/0x610 fs/squashfs/xattr.c:222 __vfs_getxattr fs/xattr.c:347 [inline] vfs_getxattr+0x1ce/0x320 fs/xattr.c:378 ovl_check_metacopy_xattr+0x93/0x130 fs/overlayfs/util.c:853 ovl_lookup_single+0x304/0x920 fs/overlayfs/namei.c:239 ovl_lookup_layer+0x3bd/0x440 fs/overlayfs/namei.c:292 ovl_lookup+0x729/0x1a00 fs/overlayfs/namei.c:903 __lookup_hash+0x117/0x180 fs/namei.c:1547 do_renameat2+0x6a2/0xc70 fs/namei.c:4581 __do_sys_rename fs/namei.c:4675 [inline] __se_sys_rename fs/namei.c:4673 [inline] __x64_sys_rename+0x5d/0x80 fs/namei.c:4673 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc46218a5a9 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:00007fc4606fd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fc4622aaf80 RCX: 00007fc46218a5a9 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. RDX: 0000000000000000 RSI: 0000000020000800 RDI: 00000000200007c0 RBP: 00007fc4606fd1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc358e2c9f R14: 00007fc4606fd300 R15: 0000000000022000 overlayfs: failed to get metacopy (-12) overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. overlayfs: failed to resolve './file0': -2 overlayfs: failed to resolve './file0': -2 overlayfs: failed to resolve './file0': -2 overlayfs: failed to resolve './file0': -2 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. 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. 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. 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. 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. 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. 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. 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. overlayfs: failed to resolve './file0': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. overlayfs: failed to resolve './file0': -2 overlayfs: failed to resolve './file0': -2 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. overlayfs: failed to resolve './file0': -2