[ 15.445506][ T3891] 8021q: adding VLAN 0 to HW filter on device bond0 [ 15.449537][ T3891] eql: remember to turn off Van-Jacobson compression on your slave devices [ 15.489421][ T11] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 15.500765][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.70' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 36.454703][ T4216] loop0: detected capacity change from 0 to 1024 [ 36.464536][ T4216] [ 36.465064][ T4216] ============================================ [ 36.466224][ T4216] WARNING: possible recursive locking detected [ 36.467518][ T4216] 6.1.34-syzkaller #0 Not tainted [ 36.468496][ T4216] -------------------------------------------- [ 36.469773][ T4216] syz-executor272/4216 is trying to acquire lock: [ 36.471028][ T4216] ffff0000dab19548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x2c4/0x1168 [ 36.473277][ T4216] [ 36.473277][ T4216] but task is already holding lock: [ 36.474737][ T4216] ffff0000dab187c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x198/0x14cc [ 36.476904][ T4216] [ 36.476904][ T4216] other info that might help us debug this: [ 36.478547][ T4216] Possible unsafe locking scenario: [ 36.478547][ T4216] [ 36.480122][ T4216] CPU0 [ 36.480764][ T4216] ---- [ 36.481390][ T4216] lock(&HFSPLUS_I(inode)->extents_lock); [ 36.482652][ T4216] lock(&HFSPLUS_I(inode)->extents_lock); [ 36.483888][ T4216] [ 36.483888][ T4216] *** DEADLOCK *** [ 36.483888][ T4216] [ 36.485565][ T4216] May be due to missing lock nesting notation [ 36.485565][ T4216] [ 36.487368][ T4216] 5 locks held by syz-executor272/4216: [ 36.488494][ T4216] #0: ffff0000de6820e0 (&type->s_umount_key#39/1){+.+.}-{3:3}, at: alloc_super+0x1b4/0x824 [ 36.490546][ T4216] #1: ffff0000d7eb9198 (&sbi->vh_mutex){+.+.}-{3:3}, at: hfsplus_fill_super+0xf08/0x166c [ 36.492560][ T4216] #2: ffff0000dab160b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_find_init+0x144/0x1bc [ 36.494598][ T4216] #3: ffff0000dab187c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x198/0x14cc [ 36.496979][ T4216] #4: ffff0000d7eb90f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_allocate+0x90/0x818 [ 36.499073][ T4216] [ 36.499073][ T4216] stack backtrace: [ 36.500254][ T4216] CPU: 1 PID: 4216 Comm: syz-executor272 Not tainted 6.1.34-syzkaller #0 [ 36.502092][ T4216] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 36.504279][ T4216] Call trace: [ 36.505023][ T4216] dump_backtrace+0x1c8/0x1f4 [ 36.506042][ T4216] show_stack+0x2c/0x3c [ 36.506873][ T4216] dump_stack_lvl+0x108/0x170 [ 36.507843][ T4216] dump_stack+0x1c/0x58 [ 36.508744][ T4216] __lock_acquire+0x6310/0x764c [ 36.509767][ T4216] lock_acquire+0x26c/0x7cc [ 36.510695][ T4216] __mutex_lock_common+0x190/0x21a0 [ 36.511756][ T4216] mutex_lock_nested+0x38/0x44 [ 36.512741][ T4216] hfsplus_get_block+0x2c4/0x1168 [ 36.513793][ T4216] block_read_full_folio+0x2f4/0x98c [ 36.514895][ T4216] hfsplus_read_folio+0x28/0x38 [ 36.515911][ T4216] filemap_read_folio+0x14c/0x39c [ 36.516991][ T4216] do_read_cache_folio+0x24c/0x544 [ 36.518092][ T4216] read_cache_page+0x6c/0x180 [ 36.519107][ T4216] hfsplus_block_allocate+0xe0/0x818 [ 36.520190][ T4216] hfsplus_file_extend+0x770/0x14cc [ 36.521310][ T4216] hfsplus_bmap_reserve+0xec/0x474 [ 36.522401][ T4216] hfsplus_create_cat+0x18c/0x1330 [ 36.523487][ T4216] hfsplus_fill_super+0xf60/0x166c [ 36.524564][ T4216] mount_bdev+0x274/0x370 [ 36.525459][ T4216] hfsplus_mount+0x44/0x58 [ 36.526422][ T4216] legacy_get_tree+0xd4/0x16c [ 36.527531][ T4216] vfs_get_tree+0x90/0x274 [ 36.528460][ T4216] do_new_mount+0x25c/0x8c4 [ 36.529396][ T4216] path_mount+0x590/0xe58 [ 36.530397][ T4216] __arm64_sys_mount+0x45c/0x594 [ 36.531440][ T4216] invoke_syscall+0x98/0x2c0 [ 36.532417][ T4216] el0_svc_common+0x138/0x258 [ 36.533413][ T4216] do_el0_svc+0x64/0x218 [ 36.534270][ T4216] el0_svc+0x58/0x168 [ 36.535043][ T4216] el0t_64_sync_handler+0x84/0xf0 [ 36.536096][ T4216] el0t_64_sync+0x18c/0x190