VFS: Found a Xenix FS (block size = 512) on device loop2 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. BUG: sleeping function called from invalid context at fs/buffer.c:1381 in_atomic(): 1, irqs_disabled(): 0, pid: 10422, name: syz-executor.2 3 locks held by syz-executor.2/10422: #0: (sb_writers#18){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#18){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#26){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #1: (&sb->s_type->i_mutex_key#26){+.+.}, at: [] do_truncate+0xf0/0x1a0 fs/open.c:61 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready #2: (pointers_lock){.+.+}, at: [] get_block+0x153/0x1230 fs/sysv/itree.c:217 Preemption disabled at: [< (null)>] (null) CPU: 0 PID: 10422 Comm: syz-executor.2 Not tainted 4.14.302-syzkaller #0 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready 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: 0033:0x7fa034c9d0a9 RSP: 002b:00007fa03320f168 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 00007fa034dbcf80 RCX: 00007fa034c9d0a9 RDX: 0000000000000000 RSI: 0000000000008001 RDI: 000000002000a340 RBP: 00007fa034cf8ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd5a14649f R14: 00007fa03320f300 R15: 0000000000022000 A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. bridge0: port 2(bridge_slave_1) entered disabled state bridge0: port 1(bridge_slave_0) entered disabled state VFS: Found a Xenix FS (block size = 512) on device loop2 batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 VFS: Found a Xenix FS (block size = 512) on device loop2 BUG: sleeping function called from invalid context at fs/buffer.c:1381 in_atomic(): 1, irqs_disabled(): 0, pid: 10494, name: syz-executor.2 3 locks held by syz-executor.2/10494: #0: (sb_writers#18){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#18){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#26){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #1: (&sb->s_type->i_mutex_key#26){+.+.}, 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: 10494 Comm: syz-executor.2 Tainted: G W 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: 0033:0x7fa034c9d0a9 RSP: 002b:00007fa03320f168 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 00007fa034dbcf80 RCX: 00007fa034c9d0a9 RDX: 0000000000000000 RSI: 0000000000008001 RDI: 000000002000a340 RBP: 00007fa034cf8ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd5a14649f R14: 00007fa03320f300 R15: 0000000000022000 syz-executor.1 (10439) used greatest stack depth: 24704 bytes left VFS: Found a Xenix FS (block size = 512) on device loop1 VFS: Found a Xenix FS (block size = 512) on device loop2 VFS: Found a Xenix FS (block size = 512) on device loop1 audit: type=1800 audit(1672439312.280:2): pid=10547 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14058 res=0 VFS: Found a Xenix FS (block size = 512) on device loop1 audit: type=1800 audit(1672439312.310:3): pid=10547 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14058 res=0 audit: type=1800 audit(1672439312.510:4): pid=10570 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14048 res=0 audit: type=1800 audit(1672439312.510:5): pid=10570 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14048 res=0 audit: type=1800 audit(1672439312.680:6): pid=10581 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14089 res=0 audit: type=1800 audit(1672439312.680:7): pid=10581 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14089 res=0 audit: type=1800 audit(1672439312.970:8): pid=10596 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=14116 res=0 ======================================================