input: syz0 as /devices/virtual/input/input14 VFS: Found a Xenix FS (block size = 512) on device loop5 BUG: sleeping function called from invalid context at fs/buffer.c:1381 in_atomic(): 1, irqs_disabled(): 0, pid: 15151, name: syz-executor.5 3 locks held by syz-executor.5/15151: #0: (sb_writers#26){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#26){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#33){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #1: (&sb->s_type->i_mutex_key#33){+.+.}, at: [] do_truncate+0xf0/0x1a0 fs/open.c:61 #2: (pointers_lock){.+.+}, at: [] get_block+0x153/0x1230 fs/sysv/itree.c:217 Preemption disabled at: [< (null)>] (null) CPU: 0 PID: 15151 Comm: syz-executor.5 Not tainted 4.14.304-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 ___might_sleep.cold+0x235/0x250 kernel/sched/core.c:6041 __getblk_gfp fs/buffer.c:1381 [inline] __bread_gfp+0x3e/0x2e0 fs/buffer.c:1428 sb_bread include/linux/buffer_head.h:343 [inline] get_branch+0x2ac/0x600 fs/sysv/itree.c:104 get_block+0x176/0x1230 fs/sysv/itree.c:218 block_truncate_page+0x2a8/0x8f0 fs/buffer.c:2944 sysv_truncate+0x1c4/0xd70 fs/sysv/itree.c:383 sysv_setattr+0x115/0x180 fs/sysv/file.c:47 notify_change+0x56b/0xd10 fs/attr.c:315 do_truncate+0xff/0x1a0 fs/open.c:63 vfs_truncate+0x456/0x680 fs/open.c:120 do_sys_truncate.part.0+0xdc/0xf0 fs/open.c:143 do_sys_truncate fs/open.c:137 [inline] SYSC_truncate fs/open.c:155 [inline] SyS_truncate+0x23/0x40 fs/open.c:153 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fdfc89ec0c9 RSP: 002b:00007fdfc6f5e168 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 00007fdfc8b0bf80 RCX: 00007fdfc89ec0c9 RDX: 0000000000000000 RSI: 000000000000317b RDI: 00000000200001c0 RBP: 00007fdfc8a47ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff73abb29f R14: 00007fdfc6f5e300 R15: 0000000000022000 input: syz0 as /devices/virtual/input/input15 input: syz0 as /devices/virtual/input/input16 print_req_error: I/O error, dev loop6, sector 0 F2FS-fs (loop2): Mismatch start address, segment0(512) cp_blkaddr(605) F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop2): invalid crc value F2FS-fs (loop2): Found nat_bits in checkpoint F2FS-fs (loop2): Mounted with checkpoint version = 753bd00b attempt to access beyond end of device loop2: rw=2049, want=81920, limit=63271 attempt to access beyond end of device loop2: rw=2049, want=81928, limit=63271 IPVS: ftp: loaded support on port[0] = 21 F2FS-fs (loop2): Mismatch start address, segment0(512) cp_blkaddr(605) F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop2): invalid crc value F2FS-fs (loop2): Found nat_bits in checkpoint F2FS-fs (loop2): Mounted with checkpoint version = 753bd00b attempt to access beyond end of device loop2: rw=2049, want=81920, limit=63271 attempt to access beyond end of device loop2: rw=2049, want=81928, limit=63271 attempt to access beyond end of device loop2: rw=2049, want=81920, limit=63271 attempt to access beyond end of device loop2: rw=2049, want=81928, limit=63271