[ 15.922767][ T3968] 8021q: adding VLAN 0 to HW filter on device bond0 [ 15.928636][ T3968] eql: remember to turn off Van-Jacobson compression on your slave devices [ 15.972653][ T1881] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 15.978009][ T1881] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.85' (ED25519) to the list of known hosts. executing program syzkaller login: [ 43.153875][ T4293] loop0: detected capacity change from 0 to 64 [ 43.617416][ T4293] [ 43.618009][ T4293] ============================================ [ 43.619203][ T4293] WARNING: possible recursive locking detected [ 43.620426][ T4293] 6.1.116-syzkaller #0 Not tainted [ 43.621415][ T4293] -------------------------------------------- [ 43.622602][ T4293] syz-executor296/4293 is trying to acquire lock: [ 43.623838][ T4293] ffff0000dd6d20b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfs_find_init+0x148/0x1c8 [ 43.625730][ T4293] [ 43.625730][ T4293] but task is already holding lock: [ 43.627246][ T4293] ffff0000dd6d20b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfs_find_init+0x148/0x1c8 [ 43.629202][ T4293] [ 43.629202][ T4293] other info that might help us debug this: [ 43.630769][ T4293] Possible unsafe locking scenario: [ 43.630769][ T4293] [ 43.632243][ T4293] CPU0 [ 43.632915][ T4293] ---- [ 43.633557][ T4293] lock(&tree->tree_lock/1); [ 43.634506][ T4293] lock(&tree->tree_lock/1); [ 43.635433][ T4293] [ 43.635433][ T4293] *** DEADLOCK *** [ 43.635433][ T4293] [ 43.637064][ T4293] May be due to missing lock nesting notation [ 43.637064][ T4293] [ 43.638746][ T4293] 5 locks held by syz-executor296/4293: [ 43.639897][ T4293] #0: ffff0000dd6d4460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x244/0x91c [ 43.641704][ T4293] #1: ffff0000c4c31628 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: generic_file_write_iter+0x88/0x2b4 [ 43.644028][ T4293] #2: ffff0000c4c31478 (&HFS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfs_extend_file+0xe4/0x1130 [ 43.646230][ T4293] #3: ffff0000dd6d20b0 (&tree->tree_lock/1){+.+.}-{3:3}, at: hfs_find_init+0x148/0x1c8 [ 43.648391][ T4293] #4: ffff0000c4c300f8 (&HFS_I(tree->inode)->extents_lock){+.+.}-{3:3}, at: hfs_extend_file+0xe4/0x1130 [ 43.650715][ T4293] [ 43.650715][ T4293] stack backtrace: [ 43.651905][ T4293] CPU: 0 PID: 4293 Comm: syz-executor296 Not tainted 6.1.116-syzkaller #0 [ 43.653654][ T4293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 43.655838][ T4293] Call trace: [ 43.656511][ T4293] dump_backtrace+0x1c8/0x1f4 [ 43.657478][ T4293] show_stack+0x2c/0x3c [ 43.658330][ T4293] dump_stack_lvl+0x108/0x170 [ 43.659286][ T4293] dump_stack+0x1c/0x58 [ 43.660270][ T4293] __lock_acquire+0x6310/0x7680 [ 43.661237][ T4293] lock_acquire+0x26c/0x7cc [ 43.662125][ T4293] __mutex_lock_common+0x190/0x21a0 [ 43.663190][ T4293] mutex_lock_nested+0x38/0x44 [ 43.664229][ T4293] hfs_find_init+0x148/0x1c8 [ 43.665264][ T4293] hfs_extend_file+0x270/0x1130 [ 43.666325][ T4293] hfs_bmap_reserve+0xd0/0x3b4 [ 43.667284][ T4293] __hfs_ext_write_extent+0x1a0/0x468 [ 43.668361][ T4293] __hfs_ext_cache_extent+0x84/0x754 [ 43.669427][ T4293] hfs_extend_file+0x29c/0x1130 [ 43.670411][ T4293] hfs_get_block+0x3b8/0x9e0 [ 43.671351][ T4293] __block_write_begin_int+0x340/0x13b4 [ 43.672571][ T4293] cont_write_begin+0x5c0/0x7d8 [ 43.673583][ T4293] hfs_write_begin+0x98/0xe4 [ 43.674550][ T4293] generic_perform_write+0x278/0x55c [ 43.675647][ T4293] __generic_file_write_iter+0x168/0x388 [ 43.676770][ T4293] generic_file_write_iter+0xb8/0x2b4 [ 43.677852][ T4293] vfs_write+0x610/0x91c [ 43.678718][ T4293] ksys_write+0x15c/0x26c [ 43.679595][ T4293] __arm64_sys_write+0x7c/0x90 [ 43.680562][ T4293] invoke_syscall+0x98/0x2c0 [ 43.681480][ T4293] el0_svc_common+0x138/0x258 [ 43.682531][ T4293] do_el0_svc+0x64/0x218 [ 43.683531][ T4293] el0_svc+0x58/0x168 [ 43.684383][ T4293] el0t_64_sync_handler+0x84/0xf0 [ 43.685396][ T4293] el0t_64_sync+0x18c/0x190 [ 44.124200][ C0] sched: RT throttling activated [ 48.164613][ T1881] kworker/u4:7: attempt to access beyond end of device [ 48.164613][ T1881] loop0: rw=1048577, sector=65, nr_sectors = 1 limit=64 [ 48.167519][ T1881] Buffer I/O error on dev loop0, logical block 65, lost async page write [ 48.169211][ T1881] kworker/u4:7: attempt to access beyond end of device [ 48.169211][ T1881] loop0: rw=1048577, sector=66, nr_sectors = 1 limit=64 [ 48.171953][ T1881] Buffer I/O error on dev loop0, logical block 66, lost async page write [ 48.173801][ T1881] kworker/u4:7: attempt to access beyond end of device [ 48.173801][ T1881] loop0: rw=1048577, sector=67, nr_sectors = 1 limit=64 [ 48.177084][ T1881] Buffer I/O error on dev loop0, logical block 67, lost async page write [ 48.179057][ T1881] kworker/u4:7: attempt to access beyond end of device [ 48.179057][ T1881] loop0: rw=1048577, sector=68, nr_sectors = 1 limit=64 [ 48.182215][ T1881] Buffer I/O error on dev loop0, logical block 68, lost async page write [ 48.184049][ T1881] kworker/u4:7: attempt to access beyond end of device [ 48.184049][ T1881] loop0: rw=1048577, sector=72, nr_sectors = 1 limit=64 [ 48.187293][ T1881] Buffer I/O error on dev loop0, logical block 72, lost async page write [ 48.189151][ T1881] kworker/u4:7: attempt to access beyond end of device [ 48.189151][ T1881] loop0: rw=1048577, sector=73, nr_sectors = 1 limit=64 [ 48.192118][ T1881] Buffer I/O error on dev loop0, logical block 73, lost async page write [ 48.193966][ T1881] kworker/u4:7: attempt to access beyond end of device [ 48.193966][ T1881] loop0: rw=1048577, sector=76, nr_sectors = 1 limit=64 [ 48.197339][ T1881] Buffer I/O error on dev loop0, logical block 76, lost async page write [ 48.199357][ T1881] kworker/u4:7: attempt to access beyond end of device [ 48.199357][ T1881] loop0: rw=1048577, sector=77, nr_sectors = 1 limit=64 [ 48.202406][ T1881] Buffer I/O error on dev loop0, logical block 77, lost async page write [ 48.209275][ T1881] kworker/u4:7: attempt to access beyond end of device [ 48.209275][ T1881] loop0: rw=1048577, sector=78, nr_sectors = 4088 limit=64 [ 48.215307][ T1881] kworker/u4:7: attempt to access beyond end of device [ 48.215307][ T1881] loop0: rw=1048577, sector=4166, nr_sectors = 1 limit=64 [ 48.218243][ T1881] Buffer I/O error on dev loop0, logical block 4166, lost async page write [ 48.220174][ T1881] Buffer I/O error on dev loop0, logical block 4167, lost async page write