SELinux: unrecognized netlink message: protocol=4 nlmsg_type=2564 sclass=netlink_tcpdiag_socket pid=109805 comm=syz-executor.2 ====================================================== WARNING: possible circular locking dependency detected 6.2.0-rc6-next-20230203 #1 Not tainted ------------------------------------------------------ rs:main Q:Reg/164 is trying to acquire lock: ffff88800feec3f8 (&journal->j_checkpoint_mutex){+.+.}-{3:3}, at: __jbd2_log_wait_for_space+0x238/0x4b0 but task is already holding lock: ffff888019d73fa0 (&sb->s_type->i_mutex_key#6){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&sb->s_type->i_mutex_key#6){++++}-{3:3}: down_read+0x3d/0x50 ext4_bmap+0x52/0x470 bmap+0xb0/0x130 jbd2_journal_bmap+0xac/0x1d0 jbd2_journal_flush+0x87f/0xc90 __ext4_ioctl+0x9fd/0x4330 __x64_sys_ioctl+0x19e/0x210 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc -> #0 (&journal->j_checkpoint_mutex){+.+.}-{3:3}: __lock_acquire+0x2da7/0x63b0 lock_acquire.part.0+0xec/0x320 mutex_lock_io_nested+0x149/0x1300 __jbd2_log_wait_for_space+0x238/0x4b0 add_transaction_credits+0xa42/0xb80 start_this_handle+0x3a6/0x14d0 jbd2__journal_start+0x394/0x6b0 __ext4_journal_start_sb+0x4c2/0x6f0 ext4_dirty_inode+0xa5/0x130 __mark_inode_dirty+0x1aa/0xee0 generic_write_end+0x319/0x3d0 ext4_da_write_end+0x162/0x950 generic_perform_write+0x318/0x580 ext4_buffered_write_iter+0x164/0x460 ext4_file_write_iter+0x3ff/0x1930 vfs_write+0x9b4/0xdc0 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sb->s_type->i_mutex_key#6); lock(&journal->j_checkpoint_mutex); lock(&sb->s_type->i_mutex_key#6); lock(&journal->j_checkpoint_mutex); *** DEADLOCK *** 3 locks held by rs:main Q:Reg/164: #0: ffff88800c45aae8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xeb/0x110 #1: ffff88800fee8438 (sb_writers#3){.+.+}-{0:0}, at: ksys_write+0x12b/0x260 #2: ffff888019d73fa0 (&sb->s_type->i_mutex_key#6){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x460 stack backtrace: CPU: 1 PID: 164 Comm: rs:main Q:Reg Not tainted 6.2.0-rc6-next-20230203 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0x91/0xf0 check_noncircular+0x263/0x2e0 __lock_acquire+0x2da7/0x63b0 lock_acquire.part.0+0xec/0x320 mutex_lock_io_nested+0x149/0x1300 __jbd2_log_wait_for_space+0x238/0x4b0 add_transaction_credits+0xa42/0xb80 start_this_handle+0x3a6/0x14d0 jbd2__journal_start+0x394/0x6b0 __ext4_journal_start_sb+0x4c2/0x6f0 ext4_dirty_inode+0xa5/0x130 __mark_inode_dirty+0x1aa/0xee0 generic_write_end+0x319/0x3d0 ext4_da_write_end+0x162/0x950 generic_perform_write+0x318/0x580 ext4_buffered_write_iter+0x164/0x460 ext4_file_write_iter+0x3ff/0x1930 vfs_write+0x9b4/0xdc0 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f42c1e95fef Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 29 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 5c fd ff ff 48 RSP: 002b:00007f42c1051860 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f42ac006790 RCX: 00007f42c1e95fef RDX: 00000000000000b0 RSI: 00007f42ac006a50 RDI: 0000000000000007 RBP: 00000000000000b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f42ac006a50 R13: 0000000000000000 R14: 00000000000000b0 R15: 00007f42ac006790 platform regulatory.0: Direct firmware load for regulatory.db failed with error -2 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=2564 sclass=netlink_tcpdiag_socket pid=109837 comm=syz-executor.2 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=2564 sclass=netlink_tcpdiag_socket pid=109960 comm=syz-executor.2 platform regulatory.0: Direct firmware load for regulatory.db failed with error -2 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=2564 sclass=netlink_tcpdiag_socket pid=110099 comm=syz-executor.2 audit: type=1326 audit(1675422920.073:57): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=110197 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f80c543fb19 code=0x0 tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' audit: type=1326 audit(1675422920.905:58): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=110197 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f80c543fb19 code=0x0 tmpfs: Bad value for 'mpol' audit: type=1326 audit(1675422922.578:59): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=110247 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f80c543fb19 code=0x0 tmpfs: Bad value for 'mpol' TCP: TCP_TX_DELAY enabled audit: type=1326 audit(1675422923.510:60): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=110284 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f80c543fb19 code=0x0