ci2 starts bisection 2023-04-02 01:55:59.731817275 +0000 UTC m=+318460.745476273 bisecting fixing commit since 77c51ba552a1c4f73228766e43ae37c4101b3758 building syzkaller on 5bb7001449cd1dae6cbff2d660374d6d17cbd2c4 ensuring issue is reproducible on original commit 77c51ba552a1c4f73228766e43ae37c4101b3758 testing commit 77c51ba552a1c4f73228766e43ae37c4101b3758 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 74bbae96dfb104c5ec77ddfc785232f5d435aaeab0a07d21f0ba089751f2c4f8 all runs: crashed: possible deadlock in do_journal_begin_r testing current HEAD 00c7b5f4ddc5b346df62b757ec73f9357bb452af testing commit 00c7b5f4ddc5b346df62b757ec73f9357bb452af gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 97f47a64ad496237101842fa26a0409d9213b11641973d727f132d40dd8881b7 all runs: crashed: possible deadlock in do_journal_begin_r revisions tested: 2, total time: 39m19.706592815s (build: 31m55.153463794s, test: 6m5.972777668s) the crash still happens on HEAD commit msg: Merge tag 'input-for-v6.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input crash: possible deadlock in do_journal_begin_r REISERFS (device loop0): Using rupasov hash to sort names REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. ====================================================== WARNING: possible circular locking dependency detected 6.3.0-rc4-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/5599 is trying to acquire lock: ffffc90004a110f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x301/0xdc0 but task is already holding lock: ffff88807a19c460 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write_file+0x5b/0x1a0 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (sb_writers#13){.+.+}-{0:0}: lock_acquire+0x1b7/0x4f0 sb_start_write+0x47/0x130 mnt_want_write_file+0x5b/0x1a0 reiserfs_ioctl+0x149/0x2c0 __se_sys_ioctl+0xa7/0xf0 do_syscall_64+0x41/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #1 (&sbi->lock){+.+.}-{3:3}: lock_acquire+0x1b7/0x4f0 __mutex_lock_common+0x1c2/0x2630 mutex_lock_nested+0x1b/0x20 reiserfs_write_lock_nested+0x4a/0xb0 do_journal_begin_r+0x30c/0xdc0 journal_begin+0x13f/0x2f0 reiserfs_fill_super+0x1483/0x20e0 mount_bdev+0x27f/0x370 legacy_get_tree+0xe9/0x170 vfs_get_tree+0x7f/0x220 do_new_mount+0x1e5/0x940 __se_sys_mount+0x20d/0x2a0 do_syscall_64+0x41/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #0 (&journal->j_mutex){+.+.}-{3:3}: validate_chain+0x166b/0x5860 __lock_acquire+0x125b/0x1f80 lock_acquire+0x1b7/0x4f0 __mutex_lock_common+0x1c2/0x2630 mutex_lock_nested+0x1b/0x20 do_journal_begin_r+0x301/0xdc0 journal_begin+0x13f/0x2f0 reiserfs_dirty_inode+0xf6/0x200 __mark_inode_dirty+0x1f1/0x8b0 reiserfs_ioctl+0x210/0x2c0 __se_sys_ioctl+0xa7/0xf0 do_syscall_64+0x41/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd other info that might help us debug this: Chain exists of: &journal->j_mutex --> &sbi->lock --> sb_writers#13 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sb_writers#13); lock(&sbi->lock); lock(sb_writers#13); lock(&journal->j_mutex); *** DEADLOCK *** 1 lock held by syz-executor.0/5599: #0: ffff88807a19c460 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write_file+0x5b/0x1a0 stack backtrace: CPU: 1 PID: 5599 Comm: syz-executor.0 Not tainted 6.3.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call Trace: dump_stack_lvl+0x12e/0x1d0 check_noncircular+0x2d1/0x390 validate_chain+0x166b/0x5860 __lock_acquire+0x125b/0x1f80 lock_acquire+0x1b7/0x4f0 __mutex_lock_common+0x1c2/0x2630 mutex_lock_nested+0x1b/0x20 do_journal_begin_r+0x301/0xdc0 journal_begin+0x13f/0x2f0 reiserfs_dirty_inode+0xf6/0x200 __mark_inode_dirty+0x1f1/0x8b0 reiserfs_ioctl+0x210/0x2c0 __se_sys_ioctl+0xa7/0xf0 do_syscall_64+0x41/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f929e48b639 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f929f14e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f929e5abf80 RCX: 00007f929e48b639 RDX: 0000000020000080 RSI: 0000000040087602 RDI: 0000000000000006 RBP: 00007f929e4e6ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff99e0c38f R14: 00007f929f14e300 R15: 0000000000022000