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[syzbot] possible deadlock in f2fs_ioc_get_encryption_pwsalt | 0 (1) | 2022/12/17 00:46 |
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[syzbot] possible deadlock in f2fs_ioc_get_encryption_pwsalt | 0 (1) | 2022/12/17 00:46 |
F2FS-fs (loop4): Mounted with checkpoint version = 753bd00b ====================================================== WARNING: possible circular locking dependency detected 6.2.0-syzkaller-10827-g489fa31ea873 #0 Not tainted ------------------------------------------------------ syz-executor.4/24152 is trying to acquire lock: ffff88807b684d18 (&mm->mmap_lock){++++}-{3:3}, at: __might_fault+0xa9/0x180 mm/memory.c:5624 but task is already holding lock: ffff888038f5c088 (&sbi->sb_lock){++++}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2213 [inline] ffff888038f5c088 (&sbi->sb_lock){++++}-{3:3}, at: f2fs_ioc_get_encryption_pwsalt+0x174/0x370 fs/f2fs/file.c:2350 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #5 (&sbi->sb_lock){++++}-{3:3}: down_write+0x92/0x200 kernel/locking/rwsem.c:1573 f2fs_down_write fs/f2fs/f2fs.h:2213 [inline] f2fs_handle_error+0x8e/0x220 fs/f2fs/super.c:3920 check_block_count+0x440/0x4f0 fs/f2fs/segment.h:765 build_sit_entries fs/f2fs/segment.c:4470 [inline] f2fs_build_segment_manager+0x5600/0xa940 fs/f2fs/segment.c:5159 f2fs_fill_super+0x398b/0x8b90 fs/f2fs/super.c:4322 mount_bdev+0x351/0x410 fs/super.c:1371 legacy_get_tree+0x109/0x220 fs/fs_context.c:610 vfs_get_tree+0x8d/0x350 fs/super.c:1501 do_new_mount fs/namespace.c:3042 [inline] path_mount+0x1342/0x1e40 fs/namespace.c:3372 do_mount fs/namespace.c:3385 [inline] __do_sys_mount fs/namespace.c:3594 [inline] __se_sys_mount fs/namespace.c:3571 [inline] __x64_sys_mount+0x283/0x300 fs/namespace.c:3571 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #4 (&array[i].journal_rwsem){++++}-{3:3}: down_read+0x3d/0x50 kernel/locking/rwsem.c:1520 scan_curseg_cache+0xa7/0x3b0 fs/f2fs/node.c:2408 __f2fs_build_free_nids+0x761/0xe10 fs/f2fs/node.c:2520 f2fs_build_free_nids fs/f2fs/node.c:2535 [inline] f2fs_build_node_manager+0x2072/0x3000 fs/f2fs/node.c:3320 f2fs_fill_super+0x39ad/0x8b90 fs/f2fs/super.c:4328 mount_bdev+0x351/0x410 fs/super.c:1371 legacy_get_tree+0x109/0x220 fs/fs_context.c:610 vfs_get_tree+0x8d/0x350 fs/super.c:1501 do_new_mount fs/namespace.c:3042 [inline] path_mount+0x1342/0x1e40 fs/namespace.c:3372 do_mount fs/namespace.c:3385 [inline] __do_sys_mount fs/namespace.c:3594 [inline] __se_sys_mount fs/namespace.c:3571 [inline] __x64_sys_mount+0x283/0x300 fs/namespace.c:3571 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #3 (&nm_i->nat_tree_lock){++++}-{3:3}: down_read+0x3d/0x50 kernel/locking/rwsem.c:1520 f2fs_down_read fs/f2fs/f2fs.h:2188 [inline] f2fs_get_node_info+0x1ac/0x1070 fs/f2fs/node.c:564 __write_node_page+0x89f/0x2160 fs/f2fs/node.c:1617 f2fs_sync_node_pages+0x13f7/0x22d0 fs/f2fs/node.c:2024 block_operations+0x60c/0xc40 fs/f2fs/checkpoint.c:1278 f2fs_write_checkpoint+0x606/0x4cb0 fs/f2fs/checkpoint.c:1658 __write_checkpoint_sync fs/f2fs/checkpoint.c:1775 [inline] f2fs_issue_checkpoint+0x308/0x470 fs/f2fs/checkpoint.c:1872 f2fs_sync_fs+0x244/0x4e0 fs/f2fs/super.c:1663 f2fs_create+0x4c8/0x670 fs/f2fs/namei.c:373 lookup_open.isra.0+0x105a/0x1400 fs/namei.c:3416 open_last_lookups fs/namei.c:3484 [inline] path_openat+0x975/0x2750 fs/namei.c:3712 do_filp_open+0x1ba/0x410 fs/namei.c:3742 do_sys_openat2+0x16d/0x4c0 fs/open.c:1312 do_sys_open fs/open.c:1328 [inline] __do_sys_openat fs/open.c:1344 [inline] __se_sys_openat fs/open.c:1339 [inline] __x64_sys_openat+0x143/0x1f0 fs/open.c:1339 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #2 (&sbi->node_change){++++}-{3:3}: down_read+0x3d/0x50 kernel/locking/rwsem.c:1520 f2fs_down_read fs/f2fs/f2fs.h:2188 [inline] f2fs_lock_op fs/f2fs/f2fs.h:2231 [inline] f2fs_do_map_lock+0x4e/0x80 fs/f2fs/data.c:1464 f2fs_vm_page_mkwrite+0x1293/0x1cf0 fs/f2fs/file.c:116 do_page_mkwrite+0x19b/0x680 mm/memory.c:2925 do_shared_fault mm/memory.c:4557 [inline] do_fault mm/memory.c:4625 [inline] handle_pte_fault mm/memory.c:4909 [inline] __handle_mm_fault+0x2242/0x3e60 mm/memory.c:5051 handle_mm_fault+0x2ba/0x9c0 mm/memory.c:5197 faultin_page mm/gup.c:925 [inline] __get_user_pages+0x4da/0xf30 mm/gup.c:1147 __get_user_pages_locked mm/gup.c:1445 [inline] __gup_longterm_locked+0x89d/0x2420 mm/gup.c:2079 pin_user_pages_remote+0x101/0x160 mm/gup.c:3122 process_vm_rw_single_vec mm/process_vm_access.c:105 [inline] process_vm_rw_core.constprop.0+0x43b/0x990 mm/process_vm_access.c:215 process_vm_rw+0x29c/0x300 mm/process_vm_access.c:283 __do_sys_process_vm_writev mm/process_vm_access.c:303 [inline] __se_sys_process_vm_writev mm/process_vm_access.c:298 [inline] __x64_sys_process_vm_writev+0xe3/0x1b0 mm/process_vm_access.c:298 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #1 (mapping.invalidate_lock#4){++++}-{3:3}: down_read+0x3d/0x50 kernel/locking/rwsem.c:1520 filemap_invalidate_lock_shared include/linux/fs.h:813 [inline] filemap_fault+0xb99/0x2450 mm/filemap.c:3274 f2fs_filemap_fault+0x82/0x400 fs/f2fs/file.c:44 __do_fault+0x107/0x600 mm/memory.c:4141 do_shared_fault mm/memory.c:4547 [inline] do_fault mm/memory.c:4625 [inline] handle_pte_fault mm/memory.c:4909 [inline] __handle_mm_fault+0x21c2/0x3e60 mm/memory.c:5051 handle_mm_fault+0x2ba/0x9c0 mm/memory.c:5197 faultin_page mm/gup.c:925 [inline] __get_user_pages+0x4da/0xf30 mm/gup.c:1147 __get_user_pages_locked mm/gup.c:1381 [inline] __gup_longterm_locked+0x720/0x2420 mm/gup.c:2079 pin_user_pages_remote+0x101/0x160 mm/gup.c:3122 process_vm_rw_single_vec mm/process_vm_access.c:105 [inline] process_vm_rw_core.constprop.0+0x43b/0x990 mm/process_vm_access.c:215 process_vm_rw+0x29c/0x300 mm/process_vm_access.c:283 __do_sys_process_vm_writev mm/process_vm_access.c:303 [inline] __se_sys_process_vm_writev mm/process_vm_access.c:298 [inline] __x64_sys_process_vm_writev+0xe3/0x1b0 mm/process_vm_access.c:298 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #0 (&mm->mmap_lock){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3098 [inline] check_prevs_add kernel/locking/lockdep.c:3217 [inline] validate_chain kernel/locking/lockdep.c:3832 [inline] __lock_acquire+0x2ec7/0x5d40 kernel/locking/lockdep.c:5056 lock_acquire kernel/locking/lockdep.c:5669 [inline] lock_acquire+0x1e3/0x670 kernel/locking/lockdep.c:5634 __might_fault mm/memory.c:5625 [inline] __might_fault+0x10c/0x180 mm/memory.c:5618 _copy_to_user+0x29/0x150 lib/usercopy.c:36 copy_to_user include/linux/uaccess.h:169 [inline] f2fs_ioc_get_encryption_pwsalt+0x2b2/0x370 fs/f2fs/file.c:2365 __f2fs_ioctl+0x29db/0xabf0 fs/f2fs/file.c:4169 f2fs_ioctl+0x18e/0x220 fs/f2fs/file.c:4242 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd other info that might help us debug this: Chain exists of: &mm->mmap_lock --> &array[i].journal_rwsem --> &sbi->sb_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sbi->sb_lock); lock(&array[i].journal_rwsem); lock(&sbi->sb_lock); lock(&mm->mmap_lock); *** DEADLOCK *** 2 locks held by syz-executor.4/24152: #0: ffff88807b1a2460 (sb_writers#17){.+.+}-{0:0}, at: f2fs_ioc_get_encryption_pwsalt+0x136/0x370 fs/f2fs/file.c:2346 #1: ffff888038f5c088 (&sbi->sb_lock){++++}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2213 [inline] #1: ffff888038f5c088 (&sbi->sb_lock){++++}-{3:3}, at: f2fs_ioc_get_encryption_pwsalt+0x174/0x370 fs/f2fs/file.c:2350 stack backtrace: CPU: 0 PID: 24152 Comm: syz-executor.4 Not tainted 6.2.0-syzkaller-10827-g489fa31ea873 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 check_noncircular+0x25f/0x2e0 kernel/locking/lockdep.c:2178 check_prev_add kernel/locking/lockdep.c:3098 [inline] check_prevs_add kernel/locking/lockdep.c:3217 [inline] validate_chain kernel/locking/lockdep.c:3832 [inline] __lock_acquire+0x2ec7/0x5d40 kernel/locking/lockdep.c:5056 lock_acquire kernel/locking/lockdep.c:5669 [inline] lock_acquire+0x1e3/0x670 kernel/locking/lockdep.c:5634 __might_fault mm/memory.c:5625 [inline] __might_fault+0x10c/0x180 mm/memory.c:5618 _copy_to_user+0x29/0x150 lib/usercopy.c:36 copy_to_user include/linux/uaccess.h:169 [inline] f2fs_ioc_get_encryption_pwsalt+0x2b2/0x370 fs/f2fs/file.c:2365 __f2fs_ioctl+0x29db/0xabf0 fs/f2fs/file.c:4169 f2fs_ioctl+0x18e/0x220 fs/f2fs/file.c:4242 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f53aa68c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f53ab3d0168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f53aa7abf80 RCX: 00007f53aa68c0f9 RDX: 0000000000000000 RSI: 0000000040106614 RDI: 0000000000000004 RBP: 00007f53aa6e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff55a4a95f R14: 00007f53ab3d0300 R15: 0000000000022000 </TASK>
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/02/25 23:46 | upstream | 489fa31ea873 | ee50e71c | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | |||
2023/02/15 06:41 | upstream | 82eac0c830b7 | 1d6b4af7 | .config | console log | report | info | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | |||
2023/02/14 06:33 | upstream | f6feea56f66d | 93ae7e0a | .config | console log | report | info | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | |||
2023/02/12 02:58 | upstream | d12aca5c0cee | 93e26d60 | .config | console log | report | info | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | |||
2023/02/11 11:45 | upstream | 420b2d431d18 | 93e26d60 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | ||
2023/02/08 01:01 | upstream | 513c1a3d3f19 | 15c3d445 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | ||
2023/02/05 06:50 | upstream | 95078069c1e7 | be607b78 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | ||
2023/02/05 04:37 | upstream | 95078069c1e7 | be607b78 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | ||
2023/02/04 04:11 | upstream | 7b753a909f42 | 1b2f701a | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | |||
2023/02/04 00:48 | upstream | 7b753a909f42 | 1b2f701a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | ||
2023/02/04 00:16 | upstream | 7b753a909f42 | 1b2f701a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | ||
2023/02/02 18:55 | upstream | 9f266ccaa2f5 | 16d19e30 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | ||
2023/02/02 05:04 | upstream | 9f266ccaa2f5 | 9dfcf09c | .config | console log | report | info | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | |||
2023/02/01 21:38 | upstream | c0b67534c95c | 9dfcf09c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | ||
2023/01/28 18:33 | upstream | 5af6ce704936 | 9dfcf09c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | ||
2023/01/25 23:05 | upstream | 948ef7bb70c4 | 9dfcf09c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | ||
2023/01/25 21:25 | upstream | 948ef7bb70c4 | 9dfcf09c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | ||
2023/01/22 03:35 | upstream | f67144022885 | 559a440a | .config | console log | report | info | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | |||
2023/01/14 23:55 | upstream | 97ec4d559d93 | a63719e7 | .config | console log | report | info | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | |||
2022/12/13 00:39 | upstream | 830b3c68c1fb | 67be1ae7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt | ||
2022/12/14 08:51 | linux-next | 663397d1b469 | f6511626 | .config | console log | report | info | ci-upstream-linux-next-kasan-gce-root | possible deadlock in f2fs_ioc_get_encryption_pwsalt |