sysv_count_free_blocks: cannot read free-list block
sysv_count_free_inodes: unable to read inode table
Process accounting resumed
BUG: sleeping function called from invalid context at fs/buffer.c:1437
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 7836, name: syz-executor.0
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
4 locks held by syz-executor.0/7836:
 #0: ffff8880186da900 (&acct->lock#3){+.+.}-{3:3}, at: acct_get kernel/acct.c:180 [inline]
 #0: ffff8880186da900 (&acct->lock#3){+.+.}-{3:3}, at: slow_acct_process kernel/acct.c:596 [inline]
 #0: ffff8880186da900 (&acct->lock#3){+.+.}-{3:3}, at: acct_process+0x201/0x590 kernel/acct.c:622
 #1: ffff88810f6fa410 (sb_writers#14){.+.+}-{0:0}, at: slow_acct_process kernel/acct.c:598 [inline]
 #1: ffff88810f6fa410 (sb_writers#14){.+.+}-{0:0}, at: acct_process+0x4b2/0x590 kernel/acct.c:622
 #2: ffff8880606466d0 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
 #2: ffff8880606466d0 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: generic_file_write_iter+0x92/0x350 mm/filemap.c:4087
 #3: ffffffff8cfc0038 (pointers_lock){.+.+}-{2:2}, at: get_block+0x18f/0x14f0 fs/sysv/itree.c:221
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 7836 Comm: syz-executor.0 Not tainted 6.6.0-rc4-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
 __might_resched+0x3c3/0x5e0 kernel/sched/core.c:10187
 __getblk_gfp fs/buffer.c:1437 [inline]
 __bread_gfp+0x3f/0x310 fs/buffer.c:1473
 sb_bread include/linux/buffer_head.h:326 [inline]
 get_branch+0x2cb/0x660 fs/sysv/itree.c:104
 get_block+0x1ad/0x14f0 fs/sysv/itree.c:222
 __block_write_begin_int+0x3c0/0x1560 fs/buffer.c:2120
 __block_write_begin fs/buffer.c:2169 [inline]
 block_write_begin+0xb1/0x490 fs/buffer.c:2228
 sysv_write_begin+0x31/0xd0 fs/sysv/itree.c:490
 generic_perform_write+0x278/0x600 mm/filemap.c:3969
 __generic_file_write_iter+0x1f9/0x240 mm/filemap.c:4064
 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4090
 __kernel_write_iter+0x261/0x7e0 fs/read_write.c:517
 __kernel_write+0xf6/0x140 fs/read_write.c:537
 do_acct_process+0xd1a/0x1530 kernel/acct.c:540
 slow_acct_process kernel/acct.c:598 [inline]
 acct_process+0x4b2/0x590 kernel/acct.c:622
 do_exit+0x14dc/0x2a20 kernel/exit.c:864
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
 __do_sys_exit_group kernel/exit.c:1035 [inline]
 __se_sys_exit_group kernel/exit.c:1033 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1033
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f309987cae9
Code: Unable to access opcode bytes at 0x7f309987cabf.
RSP: 002b:00007ffed0e99b28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f309987cae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 000000000000015e R09: 0000000000000000
R10: 0000001b2fa20000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
 </TASK>