FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) kvm [9652]: vcpu0, guest rIP: 0xfff0 disabled perfctr wrmsr: 0xc0010007 data 0x0 FAT-fs (loop2): error, invalid access to FAT (entry 0xc4a9b956) ====================================================== WARNING: possible circular locking dependency detected 4.18.0-rc8+ #179 Not tainted ------------------------------------------------------ syz-executor4/9665 is trying to acquire lock: 00000000a5e05cb4 (event_mutex){+.+.}, at: perf_trace_destroy+0x28/0x100 kernel/trace/trace_event_perf.c:235 but task is already holding lock: 00000000515f1945 (&mm->mmap_sem){++++}, at: vm_mmap_pgoff+0x1b5/0x2c0 mm/util.c:355 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&mm->mmap_sem){++++}: down_write_killable+0x92/0x150 kernel/locking/rwsem.c:84 dup_mmap kernel/fork.c:430 [inline] dup_mm kernel/fork.c:1266 [inline] copy_mm kernel/fork.c:1320 [inline] copy_process.part.39+0x2430/0x70b0 kernel/fork.c:1826 copy_process kernel/fork.c:1639 [inline] _do_fork+0x291/0x12a0 kernel/fork.c:2122 __do_sys_clone kernel/fork.c:2229 [inline] __se_sys_clone kernel/fork.c:2223 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2223 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #2 (&dup_mmap_sem){++++}: down_write+0x8f/0x130 kernel/locking/rwsem.c:70 percpu_down_write+0xaf/0x520 kernel/locking/percpu-rwsem.c:145 register_for_each_vma+0x8c/0xdf0 kernel/events/uprobes.c:796 __uprobe_register kernel/events/uprobes.c:846 [inline] uprobe_register+0x47c/0x7c0 kernel/events/uprobes.c:907 probe_event_enable+0x5f5/0xe90 kernel/trace/trace_uprobe.c:920 trace_uprobe_register+0x4c9/0xcf0 kernel/trace/trace_uprobe.c:1205 perf_trace_event_reg kernel/trace/trace_event_perf.c:123 [inline] perf_trace_event_init+0x4fe/0x990 kernel/trace/trace_event_perf.c:198 perf_uprobe_init+0x1e5/0x280 kernel/trace/trace_event_perf.c:327 perf_uprobe_event_init+0xff/0x190 kernel/events/core.c:8467 perf_try_init_event+0x137/0x2f0 kernel/events/core.c:9739 perf_init_event kernel/events/core.c:9770 [inline] perf_event_alloc.part.93+0x1955/0x30b0 kernel/events/core.c:10043 perf_event_alloc kernel/events/core.c:10399 [inline] __do_sys_perf_event_open+0xab2/0x30f0 kernel/events/core.c:10500 __se_sys_perf_event_open kernel/events/core.c:10389 [inline] __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:10389 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (&uprobe->register_rwsem){+.+.}: down_write+0x8f/0x130 kernel/locking/rwsem.c:70 uprobe_register+0x3dd/0x7c0 kernel/events/uprobes.c:904 probe_event_enable+0x5f5/0xe90 kernel/trace/trace_uprobe.c:920 trace_uprobe_register+0x4c9/0xcf0 kernel/trace/trace_uprobe.c:1205 perf_trace_event_reg kernel/trace/trace_event_perf.c:123 [inline] perf_trace_event_init+0x4fe/0x990 kernel/trace/trace_event_perf.c:198 perf_uprobe_init+0x1e5/0x280 kernel/trace/trace_event_perf.c:327 perf_uprobe_event_init+0xff/0x190 kernel/events/core.c:8467 perf_try_init_event+0x137/0x2f0 kernel/events/core.c:9739 perf_init_event kernel/events/core.c:9770 [inline] perf_event_alloc.part.93+0x1955/0x30b0 kernel/events/core.c:10043 perf_event_alloc kernel/events/core.c:10399 [inline] __do_sys_perf_event_open+0xab2/0x30f0 kernel/events/core.c:10500 __se_sys_perf_event_open kernel/events/core.c:10389 [inline] __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:10389 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (event_mutex){+.+.}: lock_acquire+0x1e4/0x540 kernel/locking/lockdep.c:3924 __mutex_lock_common kernel/locking/mutex.c:757 [inline] __mutex_lock+0x176/0x1820 kernel/locking/mutex.c:894 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:909 perf_trace_destroy+0x28/0x100 kernel/trace/trace_event_perf.c:235 tp_perf_event_destroy+0x15/0x20 kernel/events/core.c:8329 _free_event+0x407/0x1440 kernel/events/core.c:4445 put_event+0x48/0x60 kernel/events/core.c:4531 perf_mmap_close+0x615/0x1190 kernel/events/core.c:5514 remove_vma+0xb6/0x180 mm/mmap.c:181 remove_vma_list mm/mmap.c:2549 [inline] do_munmap+0x743/0xf90 mm/mmap.c:2785 mmap_region+0x61f/0x16b0 mm/mmap.c:1705 do_mmap+0xa06/0x1320 mm/mmap.c:1535 do_mmap_pgoff include/linux/mm.h:2306 [inline] vm_mmap_pgoff+0x213/0x2c0 mm/util.c:357 ksys_mmap_pgoff+0x4da/0x660 mm/mmap.c:1585 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: event_mutex --> &dup_mmap_sem --> &mm->mmap_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&mm->mmap_sem); lock(&dup_mmap_sem); lock(&mm->mmap_sem); lock(event_mutex); *** DEADLOCK *** 1 lock held by syz-executor4/9665: #0: 00000000515f1945 (&mm->mmap_sem){++++}, at: vm_mmap_pgoff+0x1b5/0x2c0 mm/util.c:355 stack backtrace: CPU: 0 PID: 9665 Comm: syz-executor4 Not tainted 4.18.0-rc8+ #179 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 print_circular_bug.isra.36.cold.57+0x1bd/0x27d kernel/locking/lockdep.c:1227 check_prev_add kernel/locking/lockdep.c:1867 [inline] check_prevs_add kernel/locking/lockdep.c:1980 [inline] validate_chain kernel/locking/lockdep.c:2421 [inline] __lock_acquire+0x3449/0x5020 kernel/locking/lockdep.c:3435 lock_acquire+0x1e4/0x540 kernel/locking/lockdep.c:3924 __mutex_lock_common kernel/locking/mutex.c:757 [inline] __mutex_lock+0x176/0x1820 kernel/locking/mutex.c:894 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:909 perf_trace_destroy+0x28/0x100 kernel/trace/trace_event_perf.c:235 tp_perf_event_destroy+0x15/0x20 kernel/events/core.c:8329 _free_event+0x407/0x1440 kernel/events/core.c:4445 put_event+0x48/0x60 kernel/events/core.c:4531 perf_mmap_close+0x615/0x1190 kernel/events/core.c:5514 remove_vma+0xb6/0x180 mm/mmap.c:181 remove_vma_list mm/mmap.c:2549 [inline] do_munmap+0x743/0xf90 mm/mmap.c:2785 mmap_region+0x61f/0x16b0 mm/mmap.c:1705 do_mmap+0xa06/0x1320 mm/mmap.c:1535 do_mmap_pgoff include/linux/mm.h:2306 [inline] vm_mmap_pgoff+0x213/0x2c0 mm/util.c:357 ksys_mmap_pgoff+0x4da/0x660 mm/mmap.c:1585 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x456cb9 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007efdce7b6c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007efdce7b76d4 RCX: 0000000000456cb9 RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020713000 RBP: 0000000000930140 R08: 0000000000000014 R09: 0000000000000000 R10: 0000000000004011 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d1dd0 R14: 00000000004c7561 R15: 0000000000000001 kvm [9652]: vcpu0, guest rIP: 0xfff0 disabled perfctr wrmsr: 0xc0010007 data 0x0 netlink: 'syz-executor0': attribute type 16 has an invalid length. bridge0: port 1(bridge_slave_0) entered disabled state bridge0: port 2(bridge_slave_1) entered disabled state PF_BRIDGE: br_mdb_parse() with non-bridge netlink: 8 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 'syz-executor0': attribute type 16 has an invalid length. netlink: 8 bytes leftover after parsing attributes in process `syz-executor7'. netlink: set zone limit has 4 unknown bytes FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 9942 Comm: syz-executor3 Not tainted 4.18.0-rc8+ #179 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc+0x2af/0x760 mm/slab.c:3552 getname_flags+0xd0/0x5a0 fs/namei.c:140 getname fs/namei.c:211 [inline] __do_sys_unlink fs/namei.c:4120 [inline] __se_sys_unlink fs/namei.c:4118 [inline] __x64_sys_unlink+0x35/0x50 fs/namei.c:4118 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x456cb9 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f5024536c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007f50245376d4 RCX: 0000000000456cb9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013 R13: 00000000004d6390 R14: 00000000004c7453 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 CPU: 0 PID: 9961 Comm: syz-executor3 Not tainted 4.18.0-rc8+ #179 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3057 [inline] prepare_alloc_pages mm/page_alloc.c:4325 [inline] __alloc_pages_nodemask+0x36e/0xdb0 mm/page_alloc.c:4363 __alloc_pages include/linux/gfp.h:456 [inline] __alloc_pages_node include/linux/gfp.h:469 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x710 mm/slab.c:2677 cache_alloc_refill mm/slab.c:3044 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] kmem_cache_alloc+0x689/0x760 mm/slab.c:3552 getname_flags+0xd0/0x5a0 fs/namei.c:140 getname fs/namei.c:211 [inline] __do_sys_unlink fs/namei.c:4120 [inline] __se_sys_unlink fs/namei.c:4118 [inline] __x64_sys_unlink+0x35/0x50 fs/namei.c:4118 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x456cb9 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f5024536c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007f50245376d4 RCX: 0000000000456cb9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013 R13: 00000000004d6390 R14: 00000000004c7453 R15: 0000000000000001 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10023 Comm: syz-executor3 Not tainted 4.18.0-rc8+ #179 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc+0x2af/0x760 mm/slab.c:3552 kmem_cache_zalloc include/linux/slab.h:697 [inline] jbd2_alloc_handle include/linux/jbd2.h:1421 [inline] new_handle fs/jbd2/transaction.c:398 [inline] jbd2__journal_start+0x1e7/0xa80 fs/jbd2/transaction.c:423 __ext4_journal_start_sb+0x182/0x600 fs/ext4/ext4_jbd2.c:81 __ext4_journal_start fs/ext4/ext4_jbd2.h:311 [inline] ext4_unlink+0x477/0x11f0 fs/ext4/namei.c:3015 vfs_unlink+0x2db/0x510 fs/namei.c:4010 do_unlinkat+0x6cc/0xa30 fs/namei.c:4073 __do_sys_unlink fs/namei.c:4120 [inline] __se_sys_unlink fs/namei.c:4118 [inline] __x64_sys_unlink+0x42/0x50 fs/namei.c:4118 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x456cb9 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f5024536c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007f50245376d4 RCX: 0000000000456cb9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013 R13: 00000000004d6390 R14: 00000000004c7453 R15: 0000000000000002 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10065 Comm: syz-executor3 Not tainted 4.18.0-rc8+ #179 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc+0x2af/0x760 mm/slab.c:3552 kmem_cache_zalloc include/linux/slab.h:697 [inline] jbd2_alloc_handle include/linux/jbd2.h:1421 [inline] new_handle fs/jbd2/transaction.c:398 [inline] jbd2__journal_start+0x1e7/0xa80 fs/jbd2/transaction.c:423 __ext4_journal_start_sb+0x182/0x600 fs/ext4/ext4_jbd2.c:81 __ext4_journal_start fs/ext4/ext4_jbd2.h:311 [inline] ext4_evict_inode+0x9c9/0x1ac0 fs/ext4/inode.c:255 evict+0x4ae/0x990 fs/inode.c:558 iput_final fs/inode.c:1506 [inline] iput+0x635/0xaa0 fs/inode.c:1532 do_unlinkat+0x733/0xa30 fs/namei.c:4079 __do_sys_unlink fs/namei.c:4120 [inline] __se_sys_unlink fs/namei.c:4118 [inline] __x64_sys_unlink+0x42/0x50 fs/namei.c:4118 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x456cb9 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f5024536c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007f50245376d4 RCX: 0000000000456cb9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013 R13: 00000000004d6390 R14: 00000000004c7453 R15: 0000000000000003 EXT4-fs error (device sda1) in ext4_evict_inode:258: Out of memory FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10098 Comm: syz-executor3 Not tainted 4.18.0-rc8+ #179 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x2c8/0x760 mm/slab.c:3727 kmalloc_array include/linux/slab.h:635 [inline] kcalloc include/linux/slab.h:646 [inline] ext4_ext_remove_space+0x26aa/0x4bb0 fs/ext4/extents.c:2930 ext4_ext_truncate+0x1d1/0x220 fs/ext4/extents.c:4644 ext4_truncate+0xef0/0x1670 fs/ext4/inode.c:4461 ext4_evict_inode+0xb68/0x1ac0 fs/ext4/inode.c:289 evict+0x4ae/0x990 fs/inode.c:558 iput_final fs/inode.c:1506 [inline] iput+0x635/0xaa0 fs/inode.c:1532 do_unlinkat+0x733/0xa30 fs/namei.c:4079 __do_sys_unlink fs/namei.c:4120 [inline] __se_sys_unlink fs/namei.c:4118 [inline] __x64_sys_unlink+0x42/0x50 fs/namei.c:4118 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x456cb9 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f5024536c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007f50245376d4 RCX: 0000000000456cb9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013 R13: 00000000004d6390 R14: 00000000004c7453 R15: 0000000000000004 EXT4-fs error (device sda1): ext4_evict_inode:293: comm syz-executor3: couldn't truncate inode 16550 (err -12) 9pnet_virtio: no channels available for device ppp0 9pnet_virtio: no channels available for device ppp0 9pnet_virtio: no channels available for device ppp0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 10300 Comm: syz-executor7 Not tainted 4.18.0-rc8+ #179 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 9pnet_virtio: no channels available for device ppp0 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc_trace+0x2cb/0x780 mm/slab.c:3618 kmalloc include/linux/slab.h:513 [inline] kzalloc include/linux/slab.h:707 [inline] kvm_create_pit+0xcd/0x900 arch/x86/kvm/i8254.c:656 kvm_arch_vm_ioctl+0x1a81/0x2670 arch/x86/kvm/x86.c:4362 kvm_vm_ioctl+0x242/0x1d80 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3119 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:684 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701 __do_sys_ioctl fs/ioctl.c:708 [inline] __se_sys_ioctl fs/ioctl.c:706 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:706 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x456cb9 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fd9e9ceec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd9e9cef6d4 RCX: 0000000000456cb9 RDX: 0000000020000080 RSI: 000000004040ae77 RDI: 0000000000000014 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000015 R13: 00000000004ce2a8 R14: 00000000004c4c41 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 10335 Comm: syz-executor7 Not tainted 4.18.0-rc8+ #179 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc_trace+0x2cb/0x780 mm/slab.c:3618 kmalloc include/linux/slab.h:513 [inline] kzalloc include/linux/slab.h:707 [inline] __kthread_create_worker+0x5a/0x270 kernel/kthread.c:678 kthread_create_worker+0xb0/0xe0 kernel/kthread.c:721 kvm_create_pit+0x1f1/0x900 arch/x86/kvm/i8254.c:670 kvm_arch_vm_ioctl+0x1a81/0x2670 arch/x86/kvm/x86.c:4362 kvm_vm_ioctl+0x242/0x1d80 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3119 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:684 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701 __do_sys_ioctl fs/ioctl.c:708 [inline] __se_sys_ioctl fs/ioctl.c:706 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:706 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x456cb9 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fd9e9ceec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd9e9cef6d4 RCX: 0000000000456cb9 RDX: 0000000020000080 RSI: 000000004040ae77 RDI: 0000000000000014 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000015 R13: 00000000004ce2a8 R14: 00000000004c4c41 R15: 0000000000000001 CPU: 0 PID: 10369 Comm: syz-executor2 Not tainted 4.18.0-rc8+ #179 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149 __should_failslab+0x124/0x180 mm/failslab.c:32