================================ WARNING: inconsistent lock state 6.1.94-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor.4/4999 [HC0[0]:SC1[1]:HE0:SE0] takes: ffff8880b9835e90 (lock#10){+.?.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline] ffff8880b9835e90 (lock#10){+.?.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x84/0x670 mm/mmap_lock.c:237 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0x9d/0x670 mm/mmap_lock.c:237 __mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline] mmap_read_trylock include/linux/mmap_lock.h:137 [inline] get_mmap_lock_carefully mm/memory.c:5304 [inline] lock_mm_and_find_vma+0x219/0x2e0 mm/memory.c:5366 do_user_addr_fault arch/x86/mm/fault.c:1312 [inline] handle_page_fault arch/x86/mm/fault.c:1431 [inline] exc_page_fault+0x169/0x620 arch/x86/mm/fault.c:1487 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 copy_user_enhanced_fast_string+0xa/0x40 arch/x86/lib/copy_user_64.S:165 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:52 [inline] copyin+0xd8/0x120 lib/iov_iter.c:183 _copy_from_iter+0x493/0xff0 lib/iov_iter.c:631 copy_from_iter include/linux/uio.h:187 [inline] copy_from_iter_full include/linux/uio.h:194 [inline] memcpy_from_msg include/linux/skbuff.h:4015 [inline] netlink_sendmsg+0x800/0xd60 net/netlink/af_netlink.c:1859 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmsg+0x2a9/0x390 net/socket.c:2597 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 irq event stamp: 25367 hardirqs last enabled at (25366): [] handle_softirqs+0x1ef/0xa40 kernel/softirq.c:555 hardirqs last disabled at (25367): [] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (25367): [] _raw_spin_lock_irq+0xa9/0x110 kernel/locking/spinlock.c:170 softirqs last enabled at (24774): [] __do_softirq kernel/softirq.c:605 [inline] softirqs last enabled at (24774): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (24774): [] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 softirqs last disabled at (25365): [] __do_softirq kernel/softirq.c:605 [inline] softirqs last disabled at (25365): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (25365): [] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(lock#10); lock(lock#10); *** DEADLOCK *** 9 locks held by syz-executor.4/4999: #0: ffff888079ec6ae8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ba/0x360 fs/file.c:1062 #1: ffff88814ba68460 (sb_writers#4){.+.+}-{0:0}, at: vfs_write+0x269/0xba0 fs/read_write.c:580 #2: ffff8880574d6850 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #2: ffff8880574d6850 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_dio_write_iter fs/ext4/file.c:495 [inline] #2: ffff8880574d6850 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_file_write_iter+0x5cc/0x1880 fs/ext4/file.c:677 #3: ffff88814ba6c990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1f51/0x21b0 fs/jbd2/transaction.c:463 #4: ffff8880574d66d8 (&ei->i_data_sem){++++}-{3:3}, at: ext4_map_blocks+0x963/0x1ca0 fs/ext4/inode.c:644 #5: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #5: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #5: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: ext4_get_group_desc+0x10f/0x4b0 fs/ext4/balloc.c:284 #6: ffff8880b9828358 (&base->lock){-.-.}-{2:2}, at: __run_timers+0x111/0x890 kernel/time/timer.c:1802 #7: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #7: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #7: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: trace_call_bpf+0xbe/0x6a0 kernel/trace/bpf_trace.c:134 #8: ffff888017b6ae58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #8: ffff888017b6ae58 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x232/0x9c0 kernel/bpf/stackmap.c:144 stack backtrace: CPU: 0 PID: 4999 Comm: syz-executor.4 Not tainted 6.1.94-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 valid_state+0x136/0x1c0 kernel/locking/lockdep.c:3969 mark_lock_irq+0xa8/0xba0 kernel/locking/lockdep.c:4172 mark_lock+0x21c/0x340 kernel/locking/lockdep.c:4628 __lock_acquire+0xb7f/0x1f80 kernel/locking/lockdep.c:5003 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 local_lock_acquire include/linux/local_lock_internal.h:29 [inline] __mmap_lock_do_trace_acquire_returned+0x9d/0x670 mm/mmap_lock.c:237 __mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline] mmap_read_trylock include/linux/mmap_lock.h:137 [inline] stack_map_get_build_id_offset+0x99e/0x9c0 kernel/bpf/stackmap.c:144 __bpf_get_stack+0x495/0x570 kernel/bpf/stackmap.c:452 bpf_prog_e6cf5f9c69743609+0x3a/0x3e bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline] __bpf_prog_run include/linux/filter.h:603 [inline] bpf_prog_run include/linux/filter.h:610 [inline] bpf_prog_run_array include/linux/bpf.h:1635 [inline] trace_call_bpf+0x345/0x6a0 kernel/trace/bpf_trace.c:135 perf_trace_run_bpf_submit+0x7b/0x1d0 kernel/events/core.c:9924 perf_trace_timer_class+0x2c8/0x380 include/trace/events/timer.h:12 trace_timer_cancel include/trace/events/timer.h:138 [inline] debug_deactivate kernel/time/timer.c:832 [inline] detach_timer+0x2f4/0x380 kernel/time/timer.c:878 expire_timers kernel/time/timer.c:1538 [inline] __run_timers+0x60c/0x890 kernel/time/timer.c:1820 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 __do_softirq kernel/softirq.c:605 [inline] invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:lock_release+0x6/0xa20 kernel/locking/lockdep.c:5670 Code: ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 73 fd ff ff 4c 89 ef e8 3a 87 77 00 e9 66 fd ff ff 0f 1f 44 00 00 55 48 89 e5 41 57 <41> 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 00 01 00 00 49 89 f5 48 RSP: 0018:ffffc90005976d68 EFLAGS: 00000287 RAX: 0000000000000000 RBX: ffffffff82315d0f RCX: 0000000000040000 RDX: ffffc90012f64000 RSI: ffffffff82315d0f RDI: ffffffff8d12acc0 RBP: ffffc90005976d70 R08: ffffffff82315e7b R09: fffffbfff2093a45 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1102974d0cf R13: dffffc0000000000 R14: ffff88814ba68678 R15: 0000000000000004 rcu_lock_release include/linux/rcupdate.h:355 [inline] rcu_read_unlock include/linux/rcupdate.h:824 [inline] ext4_get_group_desc+0x341/0x4b0 fs/ext4/balloc.c:284 ext4_mb_mark_diskspace_used+0x257/0x14e0 fs/ext4/mballoc.c:3828 ext4_mb_new_blocks+0x1511/0x4b80 fs/ext4/mballoc.c:5787 ext4_alloc_branch fs/ext4/indirect.c:340 [inline] ext4_ind_map_blocks+0x111b/0x2b10 fs/ext4/indirect.c:635 ext4_map_blocks+0x9d4/0x1ca0 fs/ext4/inode.c:653 ext4_iomap_alloc fs/ext4/inode.c:3426 [inline] ext4_iomap_begin+0x8d8/0xd20 fs/ext4/inode.c:3476 iomap_iter+0x6c8/0x1090 fs/iomap/iter.c:91 __iomap_dio_rw+0x16d9/0x2130 fs/iomap/direct-io.c:601 iomap_dio_rw+0x42/0xa0 fs/iomap/direct-io.c:690 ext4_dio_write_iter fs/ext4/file.c:557 [inline] ext4_file_write_iter+0x1464/0x1880 fs/ext4/file.c:677 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 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: 0033:0x7fb07087cf29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb07165b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb0709b3f80 RCX: 00007fb07087cf29 RDX: 0000000000400000 RSI: 0000000020000000 RDI: 0000000000000010 RBP: 00007fb0708ec074 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fb0709b3f80 R15: 00007ffcc1a32ab8 ---------------- Code disassembly (best guess): 0: ff 44 89 e9 incl -0x17(%rcx,%rcx,4) 4: 80 e1 07 and $0x7,%cl 7: 80 c1 03 add $0x3,%cl a: 38 c1 cmp %al,%cl c: 0f 8c 73 fd ff ff jl 0xfffffd85 12: 4c 89 ef mov %r13,%rdi 15: e8 3a 87 77 00 call 0x778754 1a: e9 66 fd ff ff jmp 0xfffffd85 1f: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 24: 55 push %rbp 25: 48 89 e5 mov %rsp,%rbp 28: 41 57 push %r15 * 2a: 41 56 push %r14 <-- trapping instruction 2c: 41 55 push %r13 2e: 41 54 push %r12 30: 53 push %rbx 31: 48 83 e4 e0 and $0xffffffffffffffe0,%rsp 35: 48 81 ec 00 01 00 00 sub $0x100,%rsp 3c: 49 89 f5 mov %rsi,%r13 3f: 48 rex.W