audit: type=1804 audit(1589390364.622:30): pid=16303 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op="invalid_pcr" cause="ToMToU" comm="syz-executor.4" name="/root/syzkaller-testdir029709880/syzkaller.Xb0Iy8/236/bus" dev="sda1" ino=16431 res=1 ============================= CPU: 1 PID: 16324 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 WARNING: suspicious RCU usage Call Trace: 4.14.180-syzkaller #0 Not tainted __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2b5/0x770 mm/slab.c:3550 __d_alloc+0x2a/0x9b0 fs/dcache.c:1623 __shmem_file_setup.part.0+0xcb/0x3c0 mm/shmem.c:4257 ----------------------------- net/tipc/bearer.c:177 suspicious rcu_dereference_protected() usage! __shmem_file_setup mm/shmem.c:4245 [inline] shmem_file_setup mm/shmem.c:4312 [inline] shmem_file_setup mm/shmem.c:4310 [inline] SYSC_memfd_create mm/shmem.c:3765 [inline] SyS_memfd_create+0x1f6/0x3a0 mm/shmem.c:3705 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c829 RSP: 002b:00007fdc5f23ba68 EFLAGS: 00000246 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 000000000045c829 other info that might help us debug this: RDX: 00000000200012d8 RSI: 0000000000000000 RDI: 00000000004c1991 RBP: 000000000078bf00 R08: fe03f80fe03f80ff R09: 0000000000000001 R10: 0000000000000400 R11: 0000000000000246 R12: 0000000000000005 rcu_scheduler_active = 2, debug_locks = 1 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 2 locks held by syz-executor.2/16328: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 stack backtrace: CPU: 1 PID: 16328 Comm: syz-executor.2 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 tipc_bearer_find+0x1ff/0x2f0 net/tipc/bearer.c:177 tipc_nl_compat_link_set+0x41f/0xbc0 net/tipc/netlink_compat.c:797 __tipc_nl_compat_doit net/tipc/netlink_compat.c:306 [inline] tipc_nl_compat_doit+0x18d/0x510 net/tipc/netlink_compat.c:354 tipc_nl_compat_handle net/tipc/netlink_compat.c:1205 [inline] tipc_nl_compat_recv+0x95c/0xa10 net/tipc/netlink_compat.c:1287 genl_family_rcv_msg+0x57c/0xb30 net/netlink/genetlink.c:600 genl_rcv_msg+0xaf/0x140 net/netlink/genetlink.c:625 netlink_rcv_skb+0x127/0x370 net/netlink/af_netlink.c:2433 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x620 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x733/0xbe0 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xc5/0x100 net/socket.c:656 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c829 RSP: 002b:00007f1023705c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000500120 RCX: 000000000045c829 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000009d5 R14: 00000000004cc867 R15: 00007f10237066d4 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 16350 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2b5/0x770 mm/slab.c:3550 shmem_alloc_inode+0x18/0x40 mm/shmem.c:3885 alloc_inode+0x5d/0x170 fs/inode.c:210 new_inode_pseudo+0x14/0xe0 fs/inode.c:899 new_inode+0x1b/0x40 fs/inode.c:928 shmem_get_inode+0x75/0x750 mm/shmem.c:2173 __shmem_file_setup.part.0+0x104/0x3c0 mm/shmem.c:4263 __shmem_file_setup mm/shmem.c:4245 [inline] shmem_file_setup mm/shmem.c:4312 [inline] shmem_file_setup mm/shmem.c:4310 [inline] SYSC_memfd_create mm/shmem.c:3765 [inline] SyS_memfd_create+0x1f6/0x3a0 mm/shmem.c:3705 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c829 RSP: 002b:00007fdc5f23ba68 EFLAGS: 00000246 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 000000000045c829 RDX: 00000000200012d8 RSI: 0000000000000000 RDI: 00000000004c1991 RBP: 000000000078bf00 R08: fe03f80fe03f80ff R09: 0000000000000001 R10: 0000000000000400 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 ptrace attach of ""[16340] was attempted by "/root/syz-executor.0"[16351] FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 16359 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2b5/0x770 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] inode_alloc_security security/selinux/hooks.c:233 [inline] selinux_inode_alloc_security+0xb1/0x2a0 security/selinux/hooks.c:2893 security_inode_alloc+0x8f/0xd0 security/security.c:438 inode_init_always+0x576/0xb20 fs/inode.c:168 alloc_inode+0x7a/0x170 fs/inode.c:217 new_inode_pseudo+0x14/0xe0 fs/inode.c:899 new_inode+0x1b/0x40 fs/inode.c:928 shmem_get_inode+0x75/0x750 mm/shmem.c:2173 __shmem_file_setup.part.0+0x104/0x3c0 mm/shmem.c:4263 __shmem_file_setup mm/shmem.c:4245 [inline] shmem_file_setup mm/shmem.c:4312 [inline] shmem_file_setup mm/shmem.c:4310 [inline] SYSC_memfd_create mm/shmem.c:3765 [inline] SyS_memfd_create+0x1f6/0x3a0 mm/shmem.c:3705 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c829 RSP: 002b:00007fdc5f23ba68 EFLAGS: 00000246 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 000000000045c829 RDX: 00000000200012d8 RSI: 0000000000000000 RDI: 00000000004c1991 RBP: 000000000078bf00 R08: fe03f80fe03f80ff R09: 0000000000000001 R10: 0000000000000400 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 16391 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2b5/0x770 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] get_empty_filp+0x86/0x3e0 fs/file_table.c:123 alloc_file+0x23/0x440 fs/file_table.c:164 __shmem_file_setup.part.0+0x198/0x3c0 mm/shmem.c:4275 __shmem_file_setup mm/shmem.c:4245 [inline] shmem_file_setup mm/shmem.c:4312 [inline] shmem_file_setup mm/shmem.c:4310 [inline] SYSC_memfd_create mm/shmem.c:3765 [inline] SyS_memfd_create+0x1f6/0x3a0 mm/shmem.c:3705 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c829 RSP: 002b:00007fdc5f23ba68 EFLAGS: 00000246 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 000000000045c829 RDX: 00000000200012d8 RSI: 0000000000000000 RDI: 00000000004c1991 RBP: 000000000078bf00 R08: fe03f80fe03f80ff R09: 0000000000000001 R10: 0000000000000400 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 16404 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2b5/0x770 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] file_alloc_security security/selinux/hooks.c:368 [inline] selinux_file_alloc_security+0xaf/0x190 security/selinux/hooks.c:3475 security_file_alloc+0x66/0xa0 security/security.c:874 get_empty_filp+0x15c/0x3e0 fs/file_table.c:129 alloc_file+0x23/0x440 fs/file_table.c:164 __shmem_file_setup.part.0+0x198/0x3c0 mm/shmem.c:4275 __shmem_file_setup mm/shmem.c:4245 [inline] shmem_file_setup mm/shmem.c:4312 [inline] shmem_file_setup mm/shmem.c:4310 [inline] SYSC_memfd_create mm/shmem.c:3765 [inline] SyS_memfd_create+0x1f6/0x3a0 mm/shmem.c:3705 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c829 RSP: 002b:00007fdc5f23ba68 EFLAGS: 00000246 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 000000000045c829 RDX: 00000000200012d8 RSI: 0000000000000000 RDI: 00000000004c1991 RBP: 000000000078bf00 R08: fe03f80fe03f80ff R09: 0000000000000001 R10: 0000000000000400 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 16433 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1bf/0x700 mm/page_alloc.c:4172 alloc_pages_vma+0xc2/0x4a0 mm/mempolicy.c:2077 shmem_alloc_page+0xe1/0x180 mm/shmem.c:1475 shmem_alloc_and_acct_page+0x126/0x680 mm/shmem.c:1500 shmem_getpage_gfp+0x388/0x2790 mm/shmem.c:1777 shmem_getpage mm/shmem.c:131 [inline] shmem_write_begin+0xf4/0x190 mm/shmem.c:2413 generic_perform_write+0x1c9/0x420 mm/filemap.c:3047 __generic_file_write_iter+0x227/0x590 mm/filemap.c:3172 generic_file_write_iter+0x2fa/0x650 mm/filemap.c:3200 call_write_iter include/linux/fs.h:1778 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x44e/0x630 fs/read_write.c:482 vfs_write+0x192/0x4e0 fs/read_write.c:544 SYSC_pwrite64 fs/read_write.c:632 [inline] SyS_pwrite64+0x116/0x140 fs/read_write.c:619 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x416687 RSP: 002b:00007fdc5f23ba60 EFLAGS: 00000293 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 0000000000416687 RDX: 000000000000003a RSI: 00000000200001c0 RDI: 0000000000000006 RBP: 000000000078bf00 R08: fe03f80fe03f80ff R09: 0000000000000001 R10: 0000000000000400 R11: 0000000000000293 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 EXT4-fs (loop3): VFS: Can't find ext4 filesystem FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 FAT-fs (loop0): bogus number of reserved sectors FAT-fs (loop0): Can't find a valid FAT filesystem CPU: 1 PID: 16450 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2b5/0x770 mm/slab.c:3550 getname_flags fs/namei.c:138 [inline] getname_flags+0xc8/0x560 fs/namei.c:128 do_sys_open+0x1c4/0x3f0 fs/open.c:1075 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x416621 RSP: 002b:00007fdc5f23ba60 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 0000000000416621 RDX: 00007fdc5f23bb0a RSI: 0000000000000002 RDI: 00007fdc5f23bb00 RBP: 000000000078bf00 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000293 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 FAT-fs (loop0): bogus number of reserved sectors FAT-fs (loop0): Can't find a valid FAT filesystem overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection. FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 16491 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:2891 [inline] prepare_alloc_pages mm/page_alloc.c:4124 [inline] __alloc_pages_nodemask+0x1bf/0x700 mm/page_alloc.c:4172 __alloc_pages include/linux/gfp.h:484 [inline] __alloc_pages_node include/linux/gfp.h:497 [inline] kmem_getpages mm/slab.c:1419 [inline] cache_grow_begin+0x7b/0x410 mm/slab.c:2676 overlayfs: failed to resolve './file0': -2 cache_alloc_refill mm/slab.c:3043 [inline] ____cache_alloc mm/slab.c:3125 [inline] ____cache_alloc mm/slab.c:3108 [inline] __do_cache_alloc mm/slab.c:3347 [inline] slab_alloc mm/slab.c:3382 [inline] kmem_cache_alloc+0x695/0x770 mm/slab.c:3550 getname_flags fs/namei.c:138 [inline] getname_flags+0xc8/0x560 fs/namei.c:128 do_sys_open+0x1c4/0x3f0 fs/open.c:1075 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x416621 RSP: 002b:00007fdc5f23ba60 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 0000000000416621 RDX: 00007fdc5f23bb0a RSI: 0000000000000002 RDI: 00007fdc5f23bb00 RBP: 000000000078bf00 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000293 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 EXT4-fs (loop3): Invalid log block size: 83886082 print_req_error: I/O error, dev loop3, sector 0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 16540 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 audit: type=1400 audit(1589390368.942:31): avc: denied { sys_admin } for pid=16541 comm="syz-executor.0" capability=21 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=cap_userns permissive=1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2b5/0x770 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] file_alloc_security security/selinux/hooks.c:368 [inline] selinux_file_alloc_security+0xaf/0x190 security/selinux/hooks.c:3475 security_file_alloc+0x66/0xa0 security/security.c:874 get_empty_filp+0x15c/0x3e0 fs/file_table.c:129 path_openat+0x8d/0x3c50 fs/namei.c:3545 do_filp_open+0x18e/0x250 fs/namei.c:3603 do_sys_open+0x29d/0x3f0 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x416621 RSP: 002b:00007fdc5f23ba60 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 0000000000416621 RDX: 00007fdc5f23bb0a RSI: 0000000000000002 RDI: 00007fdc5f23bb00 RBP: 000000000078bf00 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000293 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 16568 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc_trace+0x2db/0x7b0 mm/slab.c:3616 kmalloc include/linux/slab.h:488 [inline] __kthread_create_on_node+0xbe/0x3a0 kernel/kthread.c:277 kthread_create_on_node+0xa8/0xd0 kernel/kthread.c:365 loop_prepare_queue drivers/block/loop.c:877 [inline] loop_set_fd drivers/block/loop.c:922 [inline] lo_ioctl+0xcb2/0x1c40 drivers/block/loop.c:1417 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x91d/0x17d0 block/ioctl.c:594 block_ioctl+0xd9/0x120 fs/block_dev.c:1881 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c6f7 RSP: 002b:00007fdc5f23ba68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 000000000045c6f7 RDX: 0000000000000006 RSI: 0000000000004c00 RDI: 0000000000000007 RBP: 000000000078bf00 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 9pnet_virtio: no channels available for device 127.0.0.1 overlayfs: unrecognized mount option "work" or missing value 9pnet_virtio: no channels available for device 127.0.0.1 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 16606 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc_trace+0x2db/0x7b0 mm/slab.c:3616 kmalloc include/linux/slab.h:488 [inline] __kthread_create_on_node+0xbe/0x3a0 kernel/kthread.c:277 kthread_create_on_node+0xa8/0xd0 kernel/kthread.c:365 loop_prepare_queue drivers/block/loop.c:877 [inline] loop_set_fd drivers/block/loop.c:922 [inline] lo_ioctl+0xcb2/0x1c40 drivers/block/loop.c:1417 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x91d/0x17d0 block/ioctl.c:594 block_ioctl+0xd9/0x120 fs/block_dev.c:1881 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c6f7 RSP: 002b:00007fdc5f23ba68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 000000000045c6f7 RDX: 0000000000000006 RSI: 0000000000004c00 RDI: 0000000000000007 RBP: 000000000078bf00 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 ip_tables: iptables: counters copy to user failed while replacing table FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 16640 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 FAT-fs (loop4): bread failed, FSINFO block (sector = 65023) Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2b5/0x770 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 kernfs_create_dir_ns+0x3c/0x130 fs/kernfs/dir.c:998 kernfs_create_dir include/linux/kernfs.h:502 [inline] internal_create_group+0xea/0x7e0 fs/sysfs/group.c:124 loop_sysfs_init drivers/block/loop.c:821 [inline] loop_set_fd drivers/block/loop.c:946 [inline] lo_ioctl+0x1123/0x1c40 drivers/block/loop.c:1417 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x91d/0x17d0 block/ioctl.c:594 block_ioctl+0xd9/0x120 fs/block_dev.c:1881 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c6f7 RSP: 002b:00007fdc5f23ba68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 000000000045c6f7 RDX: 0000000000000006 RSI: 0000000000004c00 RDI: 0000000000000007 RBP: 000000000078bf00 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 FAT-fs (loop4): bread failed, FSINFO block (sector = 65023) ip_tables: iptables: counters copy to user failed while replacing table print_req_error: I/O error, dev loop3, sector 0 EXT4-fs (loop3): Invalid log block size: 83886082 ip_tables: iptables: counters copy to user failed while replacing table FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 print_req_error: I/O error, dev loop3, sector 0 print_req_error: I/O error, dev loop3, sector 0 Buffer I/O error on dev loop3, logical block 0, async page read print_req_error: I/O error, dev loop3, sector 0 ip_tables: iptables: counters copy to user failed while replacing table Buffer I/O error on dev loop3, logical block 0, async page read CPU: 0 PID: 16684 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 print_req_error: I/O error, dev loop3, sector 0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2b5/0x770 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x319 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x23b/0x7e0 fs/sysfs/group.c:134 loop_sysfs_init drivers/block/loop.c:821 [inline] loop_set_fd drivers/block/loop.c:946 [inline] lo_ioctl+0x1123/0x1c40 drivers/block/loop.c:1417 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x91d/0x17d0 block/ioctl.c:594 block_ioctl+0xd9/0x120 fs/block_dev.c:1881 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c6f7 RSP: 002b:00007fdc5f23ba68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 000000000045c6f7 RDX: 0000000000000006 RSI: 0000000000004c00 RDI: 0000000000000007 RBP: 000000000078bf00 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 Buffer I/O error on dev loop3, logical block 0, async page read EXT4-fs (loop3): Invalid log block size: 83886082 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 16722 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 print_req_error: I/O error, dev loop3, sector 0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 print_req_error: I/O error, dev loop3, sector 0 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x44/0x770 mm/slab.c:3550 Buffer I/O error on dev loop3, logical block 0, async page read radix_tree_node_alloc.constprop.0+0x1b4/0x300 lib/radix-tree.c:397 idr_get_free_cmn+0x5b0/0x900 lib/radix-tree.c:2170 print_req_error: I/O error, dev loop3, sector 0 idr_get_free include/linux/radix-tree.h:369 [inline] idr_alloc_cmn+0xe8/0x1e0 lib/idr.c:24 idr_alloc include/linux/idr.h:116 [inline] idr_alloc_cyclic+0xc4/0x1c8 lib/idr.c:56 Buffer I/O error on dev loop3, logical block 0, async page read __kernfs_new_node+0xaf/0x470 fs/kernfs/dir.c:638 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x319 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x23b/0x7e0 fs/sysfs/group.c:134 print_req_error: I/O error, dev loop3, sector 0 loop_sysfs_init drivers/block/loop.c:821 [inline] loop_set_fd drivers/block/loop.c:946 [inline] lo_ioctl+0x1123/0x1c40 drivers/block/loop.c:1417 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x91d/0x17d0 block/ioctl.c:594 block_ioctl+0xd9/0x120 fs/block_dev.c:1881 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 Buffer I/O error on dev loop3, logical block 0, async page read SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 Buffer I/O error on dev loop3, logical block 0, async page read do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c6f7 Buffer I/O error on dev loop3, logical block 0, async page read RSP: 002b:00007fdc5f23ba68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 000000000045c6f7 RDX: 0000000000000006 RSI: 0000000000004c00 RDI: 0000000000000007 RBP: 000000000078bf00 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 Buffer I/O error on dev loop3, logical block 0, async page read Buffer I/O error on dev loop3, logical block 0, async page read EXT4-fs (loop3): Invalid log block size: 83886082 device vxlan0 entered promiscuous mode FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 16777 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2b5/0x770 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x319 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x23b/0x7e0 fs/sysfs/group.c:134 loop_sysfs_init drivers/block/loop.c:821 [inline] loop_set_fd drivers/block/loop.c:946 [inline] lo_ioctl+0x1123/0x1c40 drivers/block/loop.c:1417 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x91d/0x17d0 block/ioctl.c:594 block_ioctl+0xd9/0x120 fs/block_dev.c:1881 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c6f7 RSP: 002b:00007fdc5f23ba68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 000000000045c6f7 RDX: 0000000000000006 RSI: 0000000000004c00 RDI: 0000000000000007 RBP: 000000000078bf00 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 EXT4-fs (loop3): Invalid log block size: 83886082 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 16807 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2b5/0x770 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x319 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x23b/0x7e0 fs/sysfs/group.c:134 loop_sysfs_init drivers/block/loop.c:821 [inline] loop_set_fd drivers/block/loop.c:946 [inline] lo_ioctl+0x1123/0x1c40 drivers/block/loop.c:1417 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x91d/0x17d0 block/ioctl.c:594 block_ioctl+0xd9/0x120 fs/block_dev.c:1881 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c6f7 RSP: 002b:00007fdc5f23ba68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 000000000045c6f7 RDX: 0000000000000006 RSI: 0000000000004c00 RDI: 0000000000000007 RBP: 000000000078bf00 R08: 0000000000000000 R09: 000000000000000a R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 netlink: 40 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor.1'. EXT4-fs (loop3): Invalid log block size: 83886082 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 16857 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 print_req_error: 39 callbacks suppressed print_req_error: I/O error, dev loop3, sector 0 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2b5/0x770 mm/slab.c:3550 print_req_error: I/O error, dev loop3, sector 0 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x319 fs/kernfs/file.c:989 print_req_error: I/O error, dev loop3, sector 0 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x23b/0x7e0 fs/sysfs/group.c:134 loop_sysfs_init drivers/block/loop.c:821 [inline] loop_set_fd drivers/block/loop.c:946 [inline] lo_ioctl+0x1123/0x1c40 drivers/block/loop.c:1417 print_req_error: I/O error, dev loop3, sector 0 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x91d/0x17d0 block/ioctl.c:594 block_ioctl+0xd9/0x120 fs/block_dev.c:1881 print_req_error: I/O error, dev loop3, sector 0 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 print_req_error: I/O error, dev loop3, sector 0 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 print_req_error: I/O error, dev loop3, sector 0 RIP: 0033:0x45c6f7 RSP: 002b:00007fdc5f23ba68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000508660 RCX: 000000000045c6f7 RDX: 0000000000000006 RSI: 0000000000004c00 RDI: 0000000000000007 RBP: 000000000078bf00 R08: 0000000000000000 R09: 000000000000000a print_req_error: I/O error, dev loop3, sector 0 R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000bea R14: 00000000004ce0a4 R15: 00007fdc5f23c6d4 print_req_error: I/O error, dev loop3, sector 0 print_req_error: I/O error, dev loop3, sector 0 EXT4-fs (loop3): Invalid log block size: 83886082 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 16908 Comm: syz-executor.3 Not tainted 4.14.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10a/0x14b lib/fault-inject.c:149 should_failslab+0xd6/0x130 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3376 [inline] kmem_cache_alloc+0x2b5/0x770 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] __kernfs_new_node+0x6f/0x470 fs/kernfs/dir.c:632 kernfs_new_node+0x7b/0xe0 fs/kernfs/dir.c:677 __kernfs_create_file+0x3d/0x319 fs/kernfs/file.c:989 sysfs_add_file_mode_ns+0x1e1/0x450 fs/sysfs/file.c:307 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x23b/0x7e0 fs/sysfs/group.c:134 loop_sysfs_init drivers/block/loop.c:821 [inline] loop_set_fd drivers/block/loop.c:946 [inline] lo_ioctl+0x1123/0x1c40 drivers/block/loop.c:1417 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x91d/0x17d0 block/ioctl.c:594 block_ioctl+0xd9/0x120 fs/block_dev.c:1881 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7