Extracting prog: 42.563139912s Minimizing prog: 12m51.555634194s Simplifying prog options: 0s Extracting C: 41.849298487s Simplifying C: 8m53.343755092s extracting reproducer from 45 programs first checking the prog from the crash report single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2-open-pwritev2-openat$cgroup_ro-write$binfmt_script-creat detailed listing: executing program 0: syz_mount_image$ocfs2(&(0x7f0000004740), &(0x7f0000004780)='./file0\x00', 0x100000a, &(0x7f00000003c0)=ANY=[@ANYBLOB="6a6f75726e616c5f6173796e635f636f6d6d69742c6865617274626561743d6e6f6e652c6c6f63616c666c6f636b732c696e6f646536342c6c6f63616c616c6c6f633d31383434363734343037333730393535313631302c6e6f61636c2c009e952c808f009b8a2a2ba5c45decab84ea8c68fb7016e25d75317ec64ca76ee292fe2e1a2a41aaf805a4bb34d7776eb390b8fade283f3d2957e4b70a21bc08d561546ded2783f4c4fd223b24044bbd7e720c3b85c2a5fa4df07027e648a2bab84e71838bec147b85485acfd6db4ac607060e6585f04feaf6705b0547a170164b415c767dcbfa4d5140560b030a74bc334a9332d0cd2851a36806fdcc5c5d34b81dc0b229dcd31e40309ede3c36fa0b64a4731ade0637b9bbc589bc269e00776a9d8b6a794daf03f71926"], 0x1, 0x4703, &(0x7f0000004800)="$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r0 = open(&(0x7f00000005c0)='./bus\x00', 0x64842, 0x30) pwritev2(r0, &(0x7f0000000240)=[{&(0x7f0000000000)="85", 0x78c00}], 0x1, 0x1400, 0x0, 0x3) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000004600)='blkio.bfq.sectors_recursive\x00', 0x275a, 0x0) write$binfmt_script(r1, &(0x7f0000000840)={'#! ', './bus', [{0x20, '1_xI-\xdeS\xc6\x19z\x01\x9a\xa6\xee\xaa\xfd\xfe\xc5\x9c\xe8d\x9a\xa6%\xa8w\x19\x98\x18\xfc\x1c~n_\xcev\x9c\x86\xb8\'\xb3b\xb1:\x9b\x92\xa6k&\xba\xf65gL\xd4\xf8\x17H=}\x18)3\xf4\x8bg\xf3\x1dBJ_UwtSU\v\x19\xe4'}, {0x20, 'c\xee\x05U\xa6\x91rsystem_file_mutex){+.+.}-{3:3}, at: ocfs2_get_system_file_inode+0x1a1/0x7b0 fs/ocfs2/sysfile.c:101 but task is already holding lock: ffff888074723f60 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_dio_wr_get_block+0x942/0x1920 fs/ocfs2/aops.c:2225 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 ocfs2_read_virt_blocks+0x2dc/0xab0 fs/ocfs2/extent_map.c:976 ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline] ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline] ocfs2_find_entry+0x436/0x28c0 fs/ocfs2/dir.c:1080 ocfs2_find_files_on_disk+0x10d/0x3a0 fs/ocfs2/dir.c:1982 ocfs2_lookup_ino_from_name+0xad/0x1e0 fs/ocfs2/dir.c:2004 _ocfs2_get_system_file_inode fs/ocfs2/sysfile.c:136 [inline] ocfs2_get_system_file_inode+0x314/0x7b0 fs/ocfs2/sysfile.c:112 ocfs2_init_global_system_inodes+0x328/0x720 fs/ocfs2/super.c:457 ocfs2_initialize_super fs/ocfs2/super.c:2250 [inline] ocfs2_fill_super+0x2f72/0x5720 fs/ocfs2/super.c:994 mount_bdev+0x2c9/0x3f0 fs/super.c:1443 legacy_get_tree+0xeb/0x180 fs/fs_context.c:632 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x2ba/0xb40 fs/namespace.c:3056 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3584 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&osb->system_file_mutex){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x132/0xd80 kernel/locking/mutex.c:747 ocfs2_get_system_file_inode+0x1a1/0x7b0 fs/ocfs2/sysfile.c:101 ocfs2_reserve_local_alloc_bits+0xfe/0x29d0 fs/ocfs2/localalloc.c:626 ocfs2_reserve_clusters_with_limit+0x1b4/0xb50 fs/ocfs2/suballoc.c:1162 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline] ocfs2_lock_allocators+0x306/0x620 fs/ocfs2/suballoc.c:2669 ocfs2_write_begin_nolock+0x271a/0x4e40 fs/ocfs2/aops.c:1740 ocfs2_dio_wr_get_block+0xc29/0x1920 fs/ocfs2/aops.c:2239 get_more_blocks fs/direct-io.c:665 [inline] do_direct_IO fs/direct-io.c:953 [inline] __blockdev_direct_IO+0x1d00/0x4810 fs/direct-io.c:1266 ocfs2_direct_IO+0x250/0x2c0 fs/ocfs2/aops.c:2468 generic_file_direct_write+0x204/0x460 mm/filemap.c:3769 __generic_file_write_iter+0x1c4/0x400 mm/filemap.c:3929 ocfs2_file_write_iter+0x17c6/0x2020 fs/ocfs2/file.c:2467 do_iter_write+0x6e6/0xc40 fs/read_write.c:861 vfs_writev fs/read_write.c:934 [inline] do_pwritev+0x216/0x360 fs/read_write.c:1031 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_file_ip_alloc_sem_key); lock(&osb->system_file_mutex); lock(&ocfs2_file_ip_alloc_sem_key); lock(&osb->system_file_mutex); *** DEADLOCK *** 3 locks held by syz-executor666/4384: #0: ffff88807d5f2460 (sb_writers#9){.+.+}-{0:0}, at: vfs_writev fs/read_write.c:933 [inline] #0: ffff88807d5f2460 (sb_writers#9){.+.+}-{0:0}, at: do_pwritev+0x1fa/0x360 fs/read_write.c:1031 #1: ffff8880747242c8 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff8880747242c8 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: ocfs2_file_write_iter+0x476/0x2020 fs/ocfs2/file.c:2399 #2: ffff888074723f60 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_dio_wr_get_block+0x942/0x1920 fs/ocfs2/aops.c:2225 stack backtrace: CPU: 0 PID: 4384 Comm: syz-executor666 Not tainted 6.1.119-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 check_noncircular+0x2fa/0x3b0 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x132/0xd80 kernel/locking/mutex.c:747 ocfs2_get_system_file_inode+0x1a1/0x7b0 fs/ocfs2/sysfile.c:101 ocfs2_reserve_local_alloc_bits+0xfe/0x29d0 fs/ocfs2/localalloc.c:626 ocfs2_reserve_clusters_with_limit+0x1b4/0xb50 fs/ocfs2/suballoc.c:1162 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline] ocfs2_lock_allocators+0x306/0x620 fs/ocfs2/suballoc.c:2669 ocfs2_write_begin_nolock+0x271a/0x4e40 fs/ocfs2/aops.c:1740 ocfs2_dio_wr_get_block+0xc29/0x1920 fs/ocfs2/aops.c:2239 get_more_blocks fs/direct-io.c:665 [inline] do_direct_IO fs/direct-io.c:953 [inline] __blockdev_direct_IO+0x1d00/0x4810 fs/direct-io.c:1266 ocfs2_direct_IO+0x250/0x2c0 fs/ocfs2/aops.c:2468 generic_file_direct_write+0x204/0x460 mm/filemap.c:3769 __generic_file_write_iter+0x1c4/0x400 mm/filemap.c:3929 ocfs2_file_write_iter+0x17c6/0x2020 fs/ocfs2/file.c:2467 do_iter_write+0x6e6/0xc40 fs/read_write.c:861 vfs_writev fs/read_write.c:934 [inline] do_pwritev+0x216/0x360 fs/read_write.c:1031 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fc306342169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff4fa3fee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc306342169 RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000003 R10: 0000000000001400 R11: 0000000000000246 R12: 00007fff4fa3ff40 R13: 00007fff4fa3ff80 R14: 0000000001000000 R15: 0000000000000003 final repro crashed as (corrupted=false): ====================================================== WARNING: possible circular locking dependency detected 6.1.119-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor666/4384 is trying to acquire lock: ffff888073f55488 (&osb->system_file_mutex){+.+.}-{3:3}, at: ocfs2_get_system_file_inode+0x1a1/0x7b0 fs/ocfs2/sysfile.c:101 but task is already holding lock: ffff888074723f60 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_dio_wr_get_block+0x942/0x1920 fs/ocfs2/aops.c:2225 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 ocfs2_read_virt_blocks+0x2dc/0xab0 fs/ocfs2/extent_map.c:976 ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline] ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline] ocfs2_find_entry+0x436/0x28c0 fs/ocfs2/dir.c:1080 ocfs2_find_files_on_disk+0x10d/0x3a0 fs/ocfs2/dir.c:1982 ocfs2_lookup_ino_from_name+0xad/0x1e0 fs/ocfs2/dir.c:2004 _ocfs2_get_system_file_inode fs/ocfs2/sysfile.c:136 [inline] ocfs2_get_system_file_inode+0x314/0x7b0 fs/ocfs2/sysfile.c:112 ocfs2_init_global_system_inodes+0x328/0x720 fs/ocfs2/super.c:457 ocfs2_initialize_super fs/ocfs2/super.c:2250 [inline] ocfs2_fill_super+0x2f72/0x5720 fs/ocfs2/super.c:994 mount_bdev+0x2c9/0x3f0 fs/super.c:1443 legacy_get_tree+0xeb/0x180 fs/fs_context.c:632 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x2ba/0xb40 fs/namespace.c:3056 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3584 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&osb->system_file_mutex){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x132/0xd80 kernel/locking/mutex.c:747 ocfs2_get_system_file_inode+0x1a1/0x7b0 fs/ocfs2/sysfile.c:101 ocfs2_reserve_local_alloc_bits+0xfe/0x29d0 fs/ocfs2/localalloc.c:626 ocfs2_reserve_clusters_with_limit+0x1b4/0xb50 fs/ocfs2/suballoc.c:1162 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline] ocfs2_lock_allocators+0x306/0x620 fs/ocfs2/suballoc.c:2669 ocfs2_write_begin_nolock+0x271a/0x4e40 fs/ocfs2/aops.c:1740 ocfs2_dio_wr_get_block+0xc29/0x1920 fs/ocfs2/aops.c:2239 get_more_blocks fs/direct-io.c:665 [inline] do_direct_IO fs/direct-io.c:953 [inline] __blockdev_direct_IO+0x1d00/0x4810 fs/direct-io.c:1266 ocfs2_direct_IO+0x250/0x2c0 fs/ocfs2/aops.c:2468 generic_file_direct_write+0x204/0x460 mm/filemap.c:3769 __generic_file_write_iter+0x1c4/0x400 mm/filemap.c:3929 ocfs2_file_write_iter+0x17c6/0x2020 fs/ocfs2/file.c:2467 do_iter_write+0x6e6/0xc40 fs/read_write.c:861 vfs_writev fs/read_write.c:934 [inline] do_pwritev+0x216/0x360 fs/read_write.c:1031 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_file_ip_alloc_sem_key); lock(&osb->system_file_mutex); lock(&ocfs2_file_ip_alloc_sem_key); lock(&osb->system_file_mutex); *** DEADLOCK *** 3 locks held by syz-executor666/4384: #0: ffff88807d5f2460 (sb_writers#9){.+.+}-{0:0}, at: vfs_writev fs/read_write.c:933 [inline] #0: ffff88807d5f2460 (sb_writers#9){.+.+}-{0:0}, at: do_pwritev+0x1fa/0x360 fs/read_write.c:1031 #1: ffff8880747242c8 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff8880747242c8 (&sb->s_type->i_mutex_key#15){+.+.}-{3:3}, at: ocfs2_file_write_iter+0x476/0x2020 fs/ocfs2/file.c:2399 #2: ffff888074723f60 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_dio_wr_get_block+0x942/0x1920 fs/ocfs2/aops.c:2225 stack backtrace: CPU: 0 PID: 4384 Comm: syz-executor666 Not tainted 6.1.119-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 check_noncircular+0x2fa/0x3b0 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x132/0xd80 kernel/locking/mutex.c:747 ocfs2_get_system_file_inode+0x1a1/0x7b0 fs/ocfs2/sysfile.c:101 ocfs2_reserve_local_alloc_bits+0xfe/0x29d0 fs/ocfs2/localalloc.c:626 ocfs2_reserve_clusters_with_limit+0x1b4/0xb50 fs/ocfs2/suballoc.c:1162 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline] ocfs2_lock_allocators+0x306/0x620 fs/ocfs2/suballoc.c:2669 ocfs2_write_begin_nolock+0x271a/0x4e40 fs/ocfs2/aops.c:1740 ocfs2_dio_wr_get_block+0xc29/0x1920 fs/ocfs2/aops.c:2239 get_more_blocks fs/direct-io.c:665 [inline] do_direct_IO fs/direct-io.c:953 [inline] __blockdev_direct_IO+0x1d00/0x4810 fs/direct-io.c:1266 ocfs2_direct_IO+0x250/0x2c0 fs/ocfs2/aops.c:2468 generic_file_direct_write+0x204/0x460 mm/filemap.c:3769 __generic_file_write_iter+0x1c4/0x400 mm/filemap.c:3929 ocfs2_file_write_iter+0x17c6/0x2020 fs/ocfs2/file.c:2467 do_iter_write+0x6e6/0xc40 fs/read_write.c:861 vfs_writev fs/read_write.c:934 [inline] do_pwritev+0x216/0x360 fs/read_write.c:1031 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fc306342169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff4fa3fee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc306342169 RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000003 R10: 0000000000001400 R11: 0000000000000246 R12: 00007fff4fa3ff40 R13: 00007fff4fa3ff80 R14: 0000000001000000 R15: 0000000000000003