VFS: Found a Xenix FS (block size = 512) on device loop4 BUG: sleeping function called from invalid context at fs/buffer.c:1381 in_atomic(): 1, irqs_disabled(): 0, pid: 12791, name: syz-executor.4 3 locks held by syz-executor.4/12791: #0: (sb_writers#25){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#25){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#32){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #1: (&sb->s_type->i_mutex_key#32){+.+.}, at: [] do_truncate+0xf0/0x1a0 fs/open.c:61 #2: (pointers_lock#2){.+.+}, at: [] get_block+0x153/0x1230 fs/sysv/itree.c:217 Preemption disabled at: [< (null)>] (null) CPU: 1 PID: 12791 Comm: syz-executor.4 Not tainted 4.14.302-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 ___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: 0033:0x7feff97f70d9 RSP: 002b:00007feff7d69168 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 00007feff9916f80 RCX: 00007feff97f70d9 RDX: 0000000000000000 RSI: 0000000000008001 RDI: 000000002000a340 RBP: 00007feff9852ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe48e604ef R14: 00007feff7d69300 R15: 0000000000022000 audit: type=1800 audit(1671579548.945:60): pid=12792 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="file0" dev="loop2" ino=10 res=0 unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue syz-executor.1 (12973): drop_caches: 2 syz-executor.1 (12973): drop_caches: 2 syz-executor.1 (13048): drop_caches: 2 syz-executor.1 (13048): drop_caches: 2 EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue syz-executor.1 (13106): drop_caches: 2 EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue syz-executor.1 (13106): drop_caches: 2