ntfs: volume version 3.1. INFO: task syz-executor.2:11777 blocked for more than 140 seconds. Not tainted 4.14.301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28912 11777 8036 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x343/0x6d0 kernel/locking/rwsem-xadd.c:617 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105 __down_write arch/x86/include/asm/rwsem.h:126 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:719 [inline] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 filp_close+0x9d/0x140 fs/open.c:1158 __close_fd+0x151/0x230 fs/file.c:639 SYSC_close fs/open.c:1177 [inline] SyS_close+0x42/0x90 fs/open.c:1175 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fe0059bcf8b RSP: 002b:00007fff2fbb5d00 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007fe0059bcf8b RDX: 0000001b30120000 RSI: 0000001b30125de0 RDI: 0000000000000005 RBP: 00007fe005b2c980 R08: 0000000000000000 R09: 000000009d2c5803 R10: 000510459ba648f9 R11: 0000000000000293 R12: 0000000000023af8 R13: 00007fff2fbb5e00 R14: 00007fe005b2b120 R15: 0000000000000032 INFO: task syz-executor.2:11781 blocked for more than 140 seconds. Not tainted 4.14.301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28488 11781 8036 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 ntfs: volume version 3.1. schedule+0x8d/0x1b0 kernel/sched/core.c:3431 fuse_wait_on_page_writeback fs/fuse/file.c:385 [inline] fuse_wait_on_page_writeback.isra.0+0xdc/0x120 fs/fuse/file.c:381 kauditd_printk_skb: 6324 callbacks suppressed audit: type=1326 audit(1670962250.470:14524): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=15183 comm=202A3A2A2098FFAD40C353EF7ED58A exe="/root/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f2f4eab50d9 code=0x50000 audit: type=1326 audit(1670962250.500:14525): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=15183 comm=202A3A2A2098FFAD40C353EF7ED58A exe="/root/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f2f4eab50d9 code=0x50000 fuse_launder_page fs/fuse/file.c:2042 [inline] fuse_launder_page+0xa2/0xd0 fs/fuse/file.c:2035 do_launder_page mm/truncate.c:609 [inline] invalidate_inode_pages2_range+0x547/0xc00 mm/truncate.c:685 audit: type=1326 audit(1670962250.500:14526): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=15183 comm=202A3A2A2098FFAD40C353EF7ED58A exe="/root/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f2f4eab50d9 code=0x50000 audit: type=1326 audit(1670962250.500:14527): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=15183 comm=202A3A2A2098FFAD40C353EF7ED58A exe="/root/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f2f4eab50d9 code=0x50000 fuse_finish_open+0x262/0x500 fs/fuse/file.c:181 fuse_open_common+0x214/0x290 fs/fuse/file.c:224 do_dentry_open+0x44b/0xec0 fs/open.c:777 audit: type=1326 audit(1670962250.510:14528): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=15183 comm=202A3A2A2098FFAD40C353EF7ED58A exe="/root/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f2f4eab50d9 code=0x50000 audit: type=1326 audit(1670962250.510:14529): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=15183 comm=202A3A2A2098FFAD40C353EF7ED58A exe="/root/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f2f4eab50d9 code=0x50000 vfs_open+0x105/0x220 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0x628/0x2970 fs/namei.c:3571 audit: type=1326 audit(1670962250.510:14530): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=15183 comm=202A3A2A2098FFAD40C353EF7ED58A exe="/root/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f2f4eab50d9 code=0x50000 do_filp_open+0x179/0x3c0 fs/namei.c:3605 audit: type=1326 audit(1670962250.510:14531): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=15183 comm=202A3A2A2098FFAD40C353EF7ED58A exe="/root/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f2f4eab50d9 code=0x50000 audit: type=1326 audit(1670962250.510:14532): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=15183 comm=202A3A2A2098FFAD40C353EF7ED58A exe="/root/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f2f4eab50d9 code=0x50000 audit: type=1326 audit(1670962250.510:14533): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=15183 comm=202A3A2A2098FFAD40C353EF7ED58A exe="/root/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f2f4eab50d9 code=0x50000 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fe005a0b0d9 RSP: 002b:00007fe003f7d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007fe005b2af80 RCX: 00007fe005a0b0d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007fe005a66ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff2fbb5c9f R14: 00007fe003f7d300 R15: 0000000000022000 INFO: task syz-executor.2:11794 blocked for more than 140 seconds. Not tainted 4.14.301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D29128 11794 8036 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 io_schedule+0xb5/0x120 kernel/sched/core.c:5035 wait_on_page_bit_common mm/filemap.c:1025 [inline] __lock_page+0x27b/0x380 mm/filemap.c:1197 lock_page include/linux/pagemap.h:480 [inline] invalidate_inode_pages2_range+0x6da/0xc00 mm/truncate.c:657 fuse_finish_open+0x262/0x500 fs/fuse/file.c:181 fuse_open_common+0x234/0x290 fs/fuse/file.c:224 do_dentry_open+0x44b/0xec0 fs/open.c:777 vfs_open+0x105/0x220 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0x628/0x2970 fs/namei.c:3571 do_filp_open+0x179/0x3c0 fs/namei.c:3605 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fe005a0b0d9 RSP: 002b:00007fe003f5c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fe005b2b050 RCX: 00007fe005a0b0d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200001c0 RBP: 00007fe005a66ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff2fbb5c9f R14: 00007fe003f5c300 R15: 0000000000022000 INFO: task syz-executor.0:11922 blocked for more than 140 seconds. Not tainted 4.14.301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. ntfs: volume version 3.1. syz-executor.0 D28912 11922 7986 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x343/0x6d0 kernel/locking/rwsem-xadd.c:617 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105 __down_write arch/x86/include/asm/rwsem.h:126 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:719 [inline] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 filp_close+0x9d/0x140 fs/open.c:1158 __close_fd+0x151/0x230 fs/file.c:639 SYSC_close fs/open.c:1177 [inline] SyS_close+0x42/0x90 fs/open.c:1175 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f708ef9af8b RSP: 002b:00007fffb5075280 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f708ef9af8b RDX: 0000001b2eb20000 RSI: 00007f708e7604f0 RDI: 0000000000000005 RBP: 00007f708f10a980 R08: 0000000000000000 R09: 000000009d2c5803 R10: 001008ca4556cd91 R11: 0000000000000293 R12: 0000000000031340 R13: 00007fffb5075380 R14: 00007f708f109120 R15: 0000000000000032 INFO: task syz-executor.0:11926 blocked for more than 140 seconds. Not tainted 4.14.301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28760 11926 7986 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 fuse_wait_on_page_writeback fs/fuse/file.c:385 [inline] fuse_wait_on_page_writeback.isra.0+0xdc/0x120 fs/fuse/file.c:381 fuse_launder_page fs/fuse/file.c:2042 [inline] fuse_launder_page+0xa2/0xd0 fs/fuse/file.c:2035 do_launder_page mm/truncate.c:609 [inline] invalidate_inode_pages2_range+0x547/0xc00 mm/truncate.c:685 fuse_finish_open+0x262/0x500 fs/fuse/file.c:181 fuse_open_common+0x214/0x290 fs/fuse/file.c:224 do_dentry_open+0x44b/0xec0 fs/open.c:777 vfs_open+0x105/0x220 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0x628/0x2970 fs/namei.c:3571 do_filp_open+0x179/0x3c0 fs/namei.c:3605 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f708efe90d9 RSP: 002b:00007f708d55b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f708f108f80 RCX: 00007f708efe90d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f708f044ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffb507521f R14: 00007f708d55b300 R15: 0000000000022000 INFO: task syz-executor.0:11931 blocked for more than 140 seconds. Not tainted 4.14.301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29136 11931 7986 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 io_schedule+0xb5/0x120 kernel/sched/core.c:5035 wait_on_page_bit_common mm/filemap.c:1025 [inline] __lock_page+0x27b/0x380 mm/filemap.c:1197 ntfs: volume version 3.1. lock_page include/linux/pagemap.h:480 [inline] invalidate_inode_pages2_range+0x6da/0xc00 mm/truncate.c:657 fuse_finish_open+0x262/0x500 fs/fuse/file.c:181 fuse_open_common+0x234/0x290 fs/fuse/file.c:224 do_dentry_open+0x44b/0xec0 fs/open.c:777 vfs_open+0x105/0x220 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0x628/0x2970 fs/namei.c:3571 do_filp_open+0x179/0x3c0 fs/namei.c:3605 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f708efe90d9 RSP: 002b:00007f708d53a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f708f109050 RCX: 00007f708efe90d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200001c0 RBP: 00007f708f044ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffb507521f R14: 00007f708d53a300 R15: 0000000000022000 INFO: task syz-executor.2:12273 blocked for more than 140 seconds. Not tainted 4.14.301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28912 12273 12021 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x343/0x6d0 kernel/locking/rwsem-xadd.c:617 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105 __down_write arch/x86/include/asm/rwsem.h:126 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:719 [inline] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 filp_close+0x9d/0x140 fs/open.c:1158 __close_fd+0x151/0x230 fs/file.c:639 SYSC_close fs/open.c:1177 [inline] SyS_close+0x42/0x90 fs/open.c:1175 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f375444ff8b RSP: 002b:00007ffd9ddbb8e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f375444ff8b RDX: 0000001b33020000 RSI: 00007f3753c154a0 RDI: 0000000000000005 RBP: 00007f37545bf980 R08: 0000000000000000 R09: 000000009d2c5803 R10: 00142c43a72ccc73 R11: 0000000000000293 R12: 0000000000031f83 R13: 00007ffd9ddbb9e0 R14: 00007f37545be120 R15: 0000000000000032 INFO: task syz-executor.2:12281 blocked for more than 140 seconds. Not tainted 4.14.301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27656 12281 12021 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 ntfs: volume version 3.1. fuse_wait_on_page_writeback fs/fuse/file.c:385 [inline] fuse_wait_on_page_writeback.isra.0+0xdc/0x120 fs/fuse/file.c:381 fuse_launder_page fs/fuse/file.c:2042 [inline] fuse_launder_page+0xa2/0xd0 fs/fuse/file.c:2035 do_launder_page mm/truncate.c:609 [inline] invalidate_inode_pages2_range+0x547/0xc00 mm/truncate.c:685 fuse_finish_open+0x262/0x500 fs/fuse/file.c:181 fuse_open_common+0x214/0x290 fs/fuse/file.c:224 do_dentry_open+0x44b/0xec0 fs/open.c:777 vfs_open+0x105/0x220 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0x628/0x2970 fs/namei.c:3571 do_filp_open+0x179/0x3c0 fs/namei.c:3605 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f375449e0d9 RSP: 002b:00007f3752a10168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f37545bdf80 RCX: 00007f375449e0d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f37544f9ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd9ddbb87f R14: 00007f3752a10300 R15: 0000000000022000 INFO: task syz-executor.2:12283 blocked for more than 140 seconds. Not tainted 4.14.301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D29136 12283 12021 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 io_schedule+0xb5/0x120 kernel/sched/core.c:5035 wait_on_page_bit_common mm/filemap.c:1025 [inline] __lock_page+0x27b/0x380 mm/filemap.c:1197 lock_page include/linux/pagemap.h:480 [inline] invalidate_inode_pages2_range+0x6da/0xc00 mm/truncate.c:657 fuse_finish_open+0x262/0x500 fs/fuse/file.c:181 fuse_open_common+0x234/0x290 fs/fuse/file.c:224 do_dentry_open+0x44b/0xec0 fs/open.c:777 vfs_open+0x105/0x220 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0x628/0x2970 fs/namei.c:3571 do_filp_open+0x179/0x3c0 fs/namei.c:3605 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f375449e0d9 RSP: 002b:00007f37529ef168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f37545be050 RCX: 00007f375449e0d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200001c0 RBP: 00007f37544f9ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd9ddbb87f R14: 00007f37529ef300 R15: 0000000000022000 INFO: task syz-executor.0:12619 blocked for more than 140 seconds. Not tainted 4.14.301-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28912 12619 12360 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x343/0x6d0 kernel/locking/rwsem-xadd.c:617 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105 __down_write arch/x86/include/asm/rwsem.h:126 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:719 [inline] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 filp_close+0x9d/0x140 fs/open.c:1158 __close_fd+0x151/0x230 fs/file.c:639 SYSC_close fs/open.c:1177 [inline] SyS_close+0x42/0x90 fs/open.c:1175 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f98a7e62f8b RSP: 002b:00007ffebb59ad70 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f98a7e62f8b RDX: 0000001b30320000 RSI: 00007f98a76288e0 RDI: 0000000000000005 RBP: 00007f98a7fd2980 R08: 0000000000000000 R09: 000000009d2c5803 R10: 0012d85396936b51 R11: 0000000000000293 R12: 000000000003fa17 R13: 00007ffebb59ae70 R14: 00007f98a7fd1120 R15: 0000000000000032 Showing all locks held in the system: 1 lock held by khungtaskd/1532: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 1 lock held by in:imklog/7699: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x1fb/0x2b0 fs/file.c:819 1 lock held by syz-executor.2/11777: #0: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #0: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 2 locks held by syz-executor.2/11794: #0: (sb_writers#17){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#17){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #1: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] fuse_open_common+0x1a4/0x290 fs/fuse/file.c:217 1 lock held by syz-executor.0/11922: #0: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #0: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 2 locks held by syz-executor.0/11931: #0: (sb_writers#17){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#17){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #1: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] fuse_open_common+0x1a4/0x290 fs/fuse/file.c:217 1 lock held by syz-executor.2/12273: #0: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #0: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 2 locks held by syz-executor.2/12283: #0: (sb_writers#17){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#17){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #1: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] fuse_open_common+0x1a4/0x290 fs/fuse/file.c:217 1 lock held by syz-executor.0/12619: #0: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #0: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 2 locks held by syz-executor.0/12625: #0: (sb_writers#17){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#17){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #1: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] fuse_open_common+0x1a4/0x290 fs/fuse/file.c:217 1 lock held by syz-executor.2/12871: #0: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #0: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 2 locks held by syz-executor.2/12877: #0: (sb_writers#17){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#17){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #1: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] fuse_open_common+0x1a4/0x290 fs/fuse/file.c:217 1 lock held by syz-executor.0/13190: #0: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #0: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 2 locks held by syz-executor.0/13196: #0: (sb_writers#17){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#17){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #1: (&sb->s_type->i_mutex_key#24){+.+.}, at: [] fuse_open_common+0x1a4/0x290 fs/fuse/file.c:217 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1532 Comm: khungtaskd Not tainted 4.14.301-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x180 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5b9/0xb40 kernel/hung_task.c:274 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3625 Comm: kworker/0:2 Not tainted 4.14.301-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: events free_obj_work task: ffff8880a8edc380 task.stack: ffff8880a8f58000 RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:289 [inline] RIP: 0010:deref_stack_reg+0x13b/0x1a0 arch/x86/kernel/unwind_orc.c:283 RSP: 0018:ffff8880a8f5f7e8 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: 1ffff110151ebefe RCX: ffffffff8a69c130 RDX: 1ffff110151ebf3f RSI: ffff8880a8f5f810 RDI: ffff8880a8f5fa28 RBP: ffff8880a8f5fc68 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880a8f5fa38 R11: 0000000000000001 R12: ffff8880a8f5f9b8 R13: ffff8880a8f5f9f8 R14: ffff8880a8f58000 R15: ffff8880a8f5f9b8 FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fef3ad801b8 CR3: 00000000a33cf000 CR4: 00000000003426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_next_frame+0xfcc/0x17d0 arch/x86/kernel/unwind_orc.c:474 __unwind_start+0x594/0x930 arch/x86/kernel/unwind_orc.c:583 unwind_start arch/x86/include/asm/unwind.h:60 [inline] __save_stack_trace+0x63/0x160 arch/x86/kernel/stacktrace.c:43 save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3496 [inline] kmem_cache_free+0x7c/0x2b0 mm/slab.c:3758 free_obj_work+0x200/0x570 lib/debugobjects.c:207 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 Code: 85 c0 75 32 48 8d 74 24 28 48 89 ef 4c 89 ea e8 cc fe ff ff 48 c1 ea 03 48 8b 6c 24 28 48 b8 00 00 00 00 00 fc ff df 80 3c 02 00 <75> 46 49 89 6d 00 b8 01 00 00 00 48 ba 00 00 00 00 00 fc ff df