program: syz_mount_image$hfsplus(&(0x7f0000000600), &(0x7f0000000040)='./file1\x00', 0x0, &(0x7f0000000080)={[{@part={'part', 0x3d, 0x500f}}, {@nodecompose}, {}, {@part={'part', 0x3d, 0xc}}, {@uid}, {@barrier}, {@nls={'nls', 0x3d, 'cp949'}}, {@gid={'gid', 0x3d, 0xee00}}]}, 0x3, 0x5f4, &(0x7f0000000640)="$eJzs3c9rHOcZB/DvrNay5YKzSewkLS0V9qElprZWmzg6FOqWUnQIJdBLLjkIex0Lr5UgbYoSSpH789r/IClFPvfUQ+nBkJ577VHQQw6F3nVzmdlZaW0rshQr2lXy+cC77zv7zrzzzOOZVzuzmA3wtbX4dk49SJHFy2+ul8tbm53e1mbn7rCd5HSSRtIcVClWkuLT5HoGJd8s36yHKz5vP+98/MbCZ+3795KiORirOVy/sd92B7NRl8wmmarroxrvxjOPV+wcYZmwS8PEwbg9fMLGYTZ/xusWmGSt5GySM/XngNSzQ2PMYT2zQ81yAAAAcEI9t53trOfcuOMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACAk6RIpgZVVRrD9myK4e//T9fvpW6faA/GHQAAAAAAAAAAHIHvbmc76zk3XH5YVN/5X6wWzlev38gHWUs3q7mS9Syln35W007SGhloen2p319tP3XLItl4NITBlvPHcLAAAAAAAAAA8NX1myzufv8PAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACToEimBlVVzg/brTSaSc4kmS7X20j+MWyfZA/GHQAAAAAcg+e2s531nBsuPyyqe/6Xqvv+M/kgK+lnOf300s3N6lnA4K6/sbXZ6W1tdu6W5clxf/y/Q4VRjZjBs4e99zxXrXFhZ4vF/Cy/yOXM5q2sZjm/zFL66WY2P61aSynSqp9etIZx7h3v9UeW3nparK9UkczkVpar2K7kRt5LLzfTqI6hWmf/Pd4rs1P8qHbAHN2s6/KI/lTXk6FVZeTUTkbm6tyX2Xh+/0wc8jx5fE/tNHaeQZ3/99Hn/Gxdl7n+w0TnfH7k7Htp/5wnF//znb/d7q3cuX1r7fLkHNIX9HgmOiOZePlrlYnpOhuDWfRws+XFattzWc7P815uppvXs5DXM5/X8lrmspBrI3m9cID5rXG4a+3S9+vGTJI/1vVkKPP6/EheR2e6VtU3+s4gS+XJ9MLR/xVofqtulPv4bV1Phscz0R45X17cPxN/fli+rvVW7qzeXnr/gPv7Xl2Xmf79RM3N5fnyQvmPVS09enaUfS/u2deu+s7v9DWe6Luw0/e0K3W6/gz35EjzVd/Le/Z1qr5XRvr2+pQDwITa/U777Ktnp2f+O/OvmU9mfjdze+bNMz85vXD629M59c/m36f+2rjf+GHxaj7Jr3fv/wEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAgC9u7cOP7iz1hj8D0Ot1VwfvfMUaf8lEhKFx0hrN+sqYlHiOrzHGSQk4Flf7d9+/uvbhRz9Yvrv0bvfd7kqn0742v3BtYf7a1VvLve7c4HXcYQJfgt0/+uOOBAAAAAAAAAAAADio4/jvBOM+RgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOBkW3w7px6kSHvuyly5vLXZ6ZVl2N5ds5mkkaT4VVJ8mlzPoKQ1Mlzxeft55+M3Fj5r37+3O1ZzuH5jv+0OZqMumU0yVddHNd6NZx6v2DnCMmGXhomDcft/AAAA//9Shwfb") r0 = socket$inet_sctp(0x2, 0x5, 0x84) setsockopt$inet_sctp_SCTP_RECVNXTINFO(r0, 0x84, 0x21, &(0x7f0000000000)=0x10, 0x4) getsockopt$inet_sctp_SCTP_RECVNXTINFO(r0, 0x84, 0x21, &(0x7f0000000040), &(0x7f0000000080)=0x4) creat(&(0x7f0000000140)='./file1\x00', 0x1) (async) r1 = creat(&(0x7f0000000140)='./file1\x00', 0x1) io_setup(0x202, &(0x7f0000000200)=0x0) io_submit(r2, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0x0, 0x0, 0x1, 0x0, r1, &(0x7f0000000000), 0x4000, 0xa00}]) (async) io_submit(r2, 0x3b, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0x0, 0x0, 0x1, 0x0, r1, &(0x7f0000000000), 0x4000, 0xa00}]) [ 74.681533][ T4670] Bluetooth: hci0: command tx timeout [ 74.774107][ T5323] loop0: detected capacity change from 0 to 1024 [ 74.865703][ T5324] [ 74.866758][ T5324] ============================================ [ 74.869241][ T5324] WARNING: possible recursive locking detected [ 74.871897][ T5324] syzkaller #0 Not tainted [ 74.873891][ T5324] -------------------------------------------- [ 74.876641][ T5324] syz.0.0/5324 is trying to acquire lock: [ 74.878859][ T5324] ffff888042a25548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_get_block+0x39e/0x1670 [ 74.883601][ T5324] [ 74.883601][ T5324] but task is already holding lock: [ 74.886953][ T5324] ffff888042a26988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_truncate+0x2b3/0xc30 [ 74.891818][ T5324] [ 74.891818][ T5324] other info that might help us debug this: [ 74.895223][ T5324] Possible unsafe locking scenario: [ 74.895223][ T5324] [ 74.898345][ T5324] CPU0 [ 74.899744][ T5324] ---- [ 74.901127][ T5324] lock(&HFSPLUS_I(inode)->extents_lock); [ 74.903564][ T5324] lock(&HFSPLUS_I(inode)->extents_lock); [ 74.905985][ T5324] [ 74.905985][ T5324] *** DEADLOCK *** [ 74.905985][ T5324] [ 74.909384][ T5324] May be due to missing lock nesting notation [ 74.909384][ T5324] [ 74.912995][ T5324] 4 locks held by syz.0.0/5324: [ 74.914954][ T5324] #0: ffff8880125ee420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 74.918630][ T5324] #1: ffff888042a26b78 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: do_truncate+0x18f/0x250 [ 74.922840][ T5324] #2: ffff888042a26988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{4:4}, at: hfsplus_file_truncate+0x2b3/0xc30 [ 74.927549][ T5324] #3: ffff8880418d78f8 (&sbi->alloc_mutex){+.+.}-{4:4}, at: hfsplus_block_free+0xc7/0x630 [ 74.931449][ T5324] [ 74.931449][ T5324] stack backtrace: [ 74.934044][ T5324] CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 74.934059][ T5324] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 74.934065][ T5324] Call Trace: [ 74.934074][ T5324] [ 74.934079][ T5324] dump_stack_lvl+0xe8/0x150 [ 74.934098][ T5324] print_deadlock_bug+0x279/0x290 [ 74.934111][ T5324] __lock_acquire+0x253f/0x2cf0 [ 74.934127][ T5324] ? lock_release+0x4b/0x3a0 [ 74.934142][ T5324] ? is_bpf_text_address+0x292/0x2b0 [ 74.934155][ T5324] ? is_bpf_text_address+0x26/0x2b0 [ 74.934168][ T5324] ? kernel_text_address+0xa5/0xe0 [ 74.934189][ T5324] ? hfsplus_get_block+0x39e/0x1670 [ 74.934206][ T5324] lock_acquire+0x106/0x330 [ 74.934219][ T5324] ? hfsplus_get_block+0x39e/0x1670 [ 74.934238][ T5324] __mutex_lock+0x19f/0x1300 [ 74.934292][ T5324] ? hfsplus_get_block+0x39e/0x1670 [ 74.934309][ T5324] ? check_path+0x21/0x40 [ 74.934319][ T5324] ? hfsplus_get_block+0x39e/0x1670 [ 74.934334][ T5324] ? add_lock_to_list+0xc7/0x100 [ 74.934344][ T5324] ? __pfx___mutex_lock+0x10/0x10 [ 74.934360][ T5324] hfsplus_get_block+0x39e/0x1670 [ 74.934378][ T5324] ? __pfx_hfsplus_get_block+0x10/0x10 [ 74.934395][ T5324] ? block_read_full_folio+0x672/0x830 [ 74.934411][ T5324] block_read_full_folio+0x29f/0x830 [ 74.934426][ T5324] ? __pfx_hfsplus_get_block+0x10/0x10 [ 74.934443][ T5324] filemap_read_folio+0x137/0x3b0 [ 74.934454][ T5324] ? __pfx_hfsplus_read_folio+0x10/0x10 [ 74.934469][ T5324] ? __pfx_filemap_read_folio+0x10/0x10 [ 74.934479][ T5324] ? filemap_add_folio+0x356/0x530 [ 74.934493][ T5324] do_read_cache_folio+0x358/0x590 [ 74.934505][ T5324] ? __pfx_hfsplus_read_folio+0x10/0x10 [ 74.934520][ T5324] read_cache_page+0x5d/0x170 [ 74.934531][ T5324] hfsplus_block_free+0x134/0x630 [ 74.934545][ T5324] ? trace_kmalloc+0x1f/0xb0 [ 74.934560][ T5324] hfsplus_free_extents+0x121/0xa50 [ 74.934577][ T5324] hfsplus_file_truncate+0x762/0xc30 [ 74.934589][ T5324] ? __pfx___up_read+0x10/0x10 [ 74.934601][ T5324] ? __pfx_hfsplus_file_truncate+0x10/0x10 [ 74.934612][ T5324] ? unmap_mapping_range+0xe6/0x180 [ 74.934624][ T5324] ? __pfx_unmap_mapping_range+0x10/0x10 [ 74.934637][ T5324] ? truncate_setsize+0xcf/0xf0 [ 74.934651][ T5324] hfsplus_setattr+0x1c4/0x270 [ 74.934666][ T5324] ? __pfx_hfsplus_setattr+0x10/0x10 [ 74.934681][ T5324] notify_change+0xc1a/0xf40 [ 74.934697][ T5324] do_truncate+0x1c2/0x250 [ 74.934711][ T5324] ? __pfx_do_truncate+0x10/0x10 [ 74.934723][ T5324] ? apparmor_file_truncate+0x3b1/0x4a0 [ 74.934804][ T5324] path_openat+0x360c/0x3e20 [ 74.934823][ T5324] ? __pfx_path_openat+0x10/0x10 [ 74.934839][ T5324] do_filp_open+0x22d/0x490 [ 74.934853][ T5324] ? __pfx_do_filp_open+0x10/0x10 [ 74.934868][ T5324] ? _raw_spin_unlock+0x28/0x50 [ 74.934883][ T5324] ? alloc_fd+0x64b/0x6c0 [ 74.934908][ T5324] do_sys_openat2+0x12f/0x220 [ 74.934918][ T5324] ? __pfx_do_sys_openat2+0x10/0x10 [ 74.934929][ T5324] ? exc_page_fault+0x6a/0xc0 [ 74.934940][ T5324] ? do_user_addr_fault+0xc7c/0x1360 [ 74.934951][ T5324] __x64_sys_creat+0x8f/0xc0 [ 74.934962][ T5324] do_syscall_64+0xe2/0xf80 [ 74.934973][ T5324] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.934984][ T5324] ? trace_irq_disable+0x37/0x100 [ 74.934993][ T5324] ? clear_bhb_loop+0x60/0xb0 [ 74.935005][ T5324] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.935016][ T5324] RIP: 0033:0x7f5ef939aeb9 [ 74.935051][ T5324] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 74.935061][ T5324] RSP: 002b:00007f5efa219028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 74.935073][ T5324] RAX: ffffffffffffffda RBX: 00007f5ef9616090 RCX: 00007f5ef939aeb9 [ 74.935081][ T5324] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000200000000140 [ 74.935087][ T5324] RBP: 00007f5ef9408c1f R08: 0000000000000000 R09: 0000000000000000 [ 74.935094][ T5324] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 74.935100][ T5324] R13: 00007f5ef9616128 R14: 00007f5ef9616090 R15: 00007ffcc3b4b9d8 [ 74.935112][ T5324] [ 75.148336][ T5324] hfsplus: unable to mark blocks free: error -5 [ 75.152288][ T5324] hfsplus: can't free extent: start 134, count 1