====================================================== WARNING: possible circular locking dependency detected 6.0.0-rc2-next-20220826 #1 Not tainted ------------------------------------------------------ syz-executor.2/13031 is trying to acquire lock: ffff88800ffc6170 (&journal->j_barrier){+.+.}-{3:3}, at: jbd2_journal_lock_updates+0x15e/0x310 but task is already holding lock: ffff88800ffc4bd0 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_change_inode_journal_flag+0x177/0x530 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&sbi->s_writepages_rwsem){++++}-{0:0}: percpu_down_write+0x4d/0x3d0 ext4_ind_migrate+0x237/0x830 ext4_fileattr_set+0x1434/0x18a0 vfs_fileattr_set+0x77c/0xb80 do_vfs_ioctl+0xfc2/0x1610 __x64_sys_ioctl+0x10c/0x210 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #2 (&sb->s_type->i_mutex_key#6){++++}-{3:3}: down_read+0x98/0x450 ext4_bmap+0x4e/0x470 bmap+0xac/0x120 jbd2_journal_bmap+0xa8/0x180 jbd2_journal_flush+0x853/0xc00 __ext4_ioctl+0x9e9/0x4090 __x64_sys_ioctl+0x19a/0x210 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #1 (&journal->j_checkpoint_mutex){+.+.}-{3:3}: mutex_lock_io_nested+0x148/0x1310 jbd2_journal_flush+0x19a/0xc00 __ext4_ioctl+0x9e9/0x4090 __x64_sys_ioctl+0x19a/0x210 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #0 (&journal->j_barrier){+.+.}-{3:3}: __lock_acquire+0x2a02/0x5e70 lock_acquire+0x1a2/0x530 __mutex_lock+0x136/0x14d0 jbd2_journal_lock_updates+0x15e/0x310 ext4_change_inode_journal_flag+0x17f/0x530 ext4_fileattr_set+0x140d/0x18a0 vfs_fileattr_set+0x77c/0xb80 do_vfs_ioctl+0xfc2/0x1610 __x64_sys_ioctl+0x10c/0x210 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd other info that might help us debug this: Chain exists of: &journal->j_barrier --> &sb->s_type->i_mutex_key#6 --> &sbi->s_writepages_rwsem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sbi->s_writepages_rwsem); lock(&sb->s_type->i_mutex_key#6); lock(&sbi->s_writepages_rwsem); lock(&journal->j_barrier); *** DEADLOCK *** 4 locks held by syz-executor.2/13031: #0: ffff88800ffc2438 (sb_writers#3){.+.+}-{0:0}, at: do_vfs_ioctl+0xf87/0x1610 #1: ffff888046cba1d0 (&sb->s_type->i_mutex_key#6){++++}-{3:3}, at: vfs_fileattr_set+0x148/0xb80 #2: ffff888046cba370 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_change_inode_journal_flag+0x11e/0x530 #3: ffff88800ffc4bd0 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_change_inode_journal_flag+0x177/0x530 stack backtrace: CPU: 0 PID: 13031 Comm: syz-executor.2 Not tainted 6.0.0-rc2-next-20220826 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: dump_stack_lvl+0x8b/0xb3 check_noncircular+0x263/0x2e0 __lock_acquire+0x2a02/0x5e70 lock_acquire+0x1a2/0x530 __mutex_lock+0x136/0x14d0 jbd2_journal_lock_updates+0x15e/0x310 ext4_change_inode_journal_flag+0x17f/0x530 ext4_fileattr_set+0x140d/0x18a0 vfs_fileattr_set+0x77c/0xb80 do_vfs_ioctl+0xfc2/0x1610 __x64_sys_ioctl+0x10c/0x210 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6d8d189b19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6d8a6ff188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f6d8d29cf60 RCX: 00007f6d8d189b19 RDX: 0000000020000080 RSI: 0000000040086602 RDI: 0000000000000003 RBP: 00007f6d8d1e3f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd4c9b5a9f R14: 00007f6d8a6ff300 R15: 0000000000022000 loop6: detected capacity change from 0 to 136 loop6: loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 522 FAT-fs (loop1): Can't find a valid FAT filesystem loop3: detected capacity change from 0 to 1298 loop3: FAT-fs (loop3): Directory bread(block 50948) failed FAT-fs (loop3): Directory bread(block 50949) failed FAT-fs (loop3): Directory bread(block 50950) failed FAT-fs (loop3): Directory bread(block 50951) failed loop6: detected capacity change from 0 to 136 loop6: loop3: detected capacity change from 0 to 1298 loop1: detected capacity change from 0 to 184 loop1: loop3: FAT-fs (loop1): bogus logical sector size 525 FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 51204) failed FAT-fs (loop3): Directory bread(block 51205) failed FAT-fs (loop3): Directory bread(block 51206) failed FAT-fs (loop3): Directory bread(block 51207) failed loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 525 FAT-fs (loop1): Can't find a valid FAT filesystem loop6: detected capacity change from 0 to 136 loop6: loop3: detected capacity change from 0 to 1298 loop6: detected capacity change from 0 to 136 loop6: loop3: FAT-fs (loop3): Directory bread(block 51460) failed FAT-fs (loop3): Directory bread(block 51461) failed FAT-fs (loop3): Directory bread(block 51462) failed FAT-fs (loop3): Directory bread(block 51463) failed loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 527 FAT-fs (loop1): Can't find a valid FAT filesystem I/O error, dev loop1, sector 1 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev loop1, logical block 1, async page read I/O error, dev loop1, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev loop1, logical block 2, async page read I/O error, dev loop1, sector 3 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev loop1, logical block 3, async page read loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 527 FAT-fs (loop1): Can't find a valid FAT filesystem loop6: detected capacity change from 0 to 136 loop6: loop3: detected capacity change from 0 to 1298 loop3: loop1: detected capacity change from 0 to 184 FAT-fs (loop3): Directory bread(block 51716) failed FAT-fs (loop3): Directory bread(block 51717) failed loop1: FAT-fs (loop3): Directory bread(block 51718) failed FAT-fs (loop1): bogus logical sector size 528 FAT-fs (loop3): Directory bread(block 51719) failed FAT-fs (loop1): Can't find a valid FAT filesystem loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 528 FAT-fs (loop1): Can't find a valid FAT filesystem loop3: detected capacity change from 0 to 1298 loop1: detected capacity change from 0 to 184 loop1: loop3: FAT-fs (loop1): bogus logical sector size 529 FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 51972) failed FAT-fs (loop3): Directory bread(block 51973) failed FAT-fs (loop3): Directory bread(block 51974) failed FAT-fs (loop3): Directory bread(block 51975) failed loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 529 FAT-fs (loop1): Can't find a valid FAT filesystem loop3: detected capacity change from 0 to 1298 loop1: detected capacity change from 0 to 184 loop6: detected capacity change from 0 to 136 loop1: loop3: FAT-fs (loop1): bogus logical sector size 535 FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 52228) failed loop6: FAT-fs (loop3): Directory bread(block 52229) failed FAT-fs (loop3): Directory bread(block 52230) failed loop1: detected capacity change from 0 to 184 FAT-fs (loop3): Directory bread(block 52231) failed loop1: FAT-fs (loop1): bogus logical sector size 535 FAT-fs (loop1): Can't find a valid FAT filesystem loop3: detected capacity change from 0 to 1298 loop3: FAT-fs (loop3): Directory bread(block 52484) failed FAT-fs (loop3): Directory bread(block 52485) failed FAT-fs (loop3): Directory bread(block 52486) failed loop1: detected capacity change from 0 to 184 FAT-fs (loop3): Directory bread(block 52487) failed loop1: FAT-fs (loop1): bogus logical sector size 536 FAT-fs (loop1): Can't find a valid FAT filesystem loop1: detected capacity change from 0 to 184 loop3: detected capacity change from 0 to 1298 loop6: detected capacity change from 0 to 136 loop3: FAT-fs (loop3): Directory bread(block 52740) failed FAT-fs (loop3): Directory bread(block 52741) failed FAT-fs (loop3): Directory bread(block 52742) failed FAT-fs (loop3): Directory bread(block 52743) failed loop1: loop6: FAT-fs (loop1): bogus logical sector size 548 FAT-fs (loop1): Can't find a valid FAT filesystem loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 548 FAT-fs (loop1): Can't find a valid FAT filesystem loop3: detected capacity change from 0 to 1298 loop3: loop6: detected capacity change from 0 to 136 FAT-fs (loop3): Directory bread(block 52996) failed FAT-fs (loop3): Directory bread(block 52997) failed FAT-fs (loop3): Directory bread(block 52998) failed FAT-fs (loop3): Directory bread(block 52999) failed loop6: loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 549 FAT-fs (loop1): Can't find a valid FAT filesystem loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 549 FAT-fs (loop1): Can't find a valid FAT filesystem loop3: detected capacity change from 0 to 1298 loop3: FAT-fs (loop3): Directory bread(block 53252) failed FAT-fs (loop3): Directory bread(block 53253) failed loop1: detected capacity change from 0 to 184 FAT-fs (loop3): Directory bread(block 53254) failed FAT-fs (loop3): Directory bread(block 53255) failed loop6: detected capacity change from 0 to 136 loop1: FAT-fs (loop1): bogus logical sector size 550 FAT-fs (loop1): Can't find a valid FAT filesystem loop6: loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 550 FAT-fs (loop1): Can't find a valid FAT filesystem loop3: detected capacity change from 0 to 1298 loop3: FAT-fs (loop3): Directory bread(block 53508) failed FAT-fs (loop3): Directory bread(block 53509) failed FAT-fs (loop3): Directory bread(block 53510) failed FAT-fs (loop3): Directory bread(block 53511) failed loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 551 FAT-fs (loop1): Can't find a valid FAT filesystem loop6: detected capacity change from 0 to 136 loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 551 FAT-fs (loop1): Can't find a valid FAT filesystem loop6: loop1: detected capacity change from 0 to 184 loop3: detected capacity change from 0 to 1298 loop6: detected capacity change from 0 to 136 loop6: loop3: FAT-fs (loop3): Directory bread(block 53764) failed FAT-fs (loop3): Directory bread(block 53765) failed FAT-fs (loop3): Directory bread(block 53766) failed FAT-fs (loop3): Directory bread(block 53767) failed loop1: FAT-fs (loop1): bogus logical sector size 552 FAT-fs (loop1): Can't find a valid FAT filesystem loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 552 FAT-fs (loop1): Can't find a valid FAT filesystem loop3: detected capacity change from 0 to 1298 loop3: FAT-fs (loop3): Directory bread(block 54020) failed FAT-fs (loop3): Directory bread(block 54021) failed FAT-fs (loop3): Directory bread(block 54022) failed FAT-fs (loop3): Directory bread(block 54023) failed loop6: detected capacity change from 0 to 136 loop6: loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 553 FAT-fs (loop1): Can't find a valid FAT filesystem loop3: detected capacity change from 0 to 1298 loop3: FAT-fs (loop3): Directory bread(block 54276) failed FAT-fs (loop3): Directory bread(block 54277) failed FAT-fs (loop3): Directory bread(block 54278) failed FAT-fs (loop3): Directory bread(block 54279) failed loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 553 FAT-fs (loop1): Can't find a valid FAT filesystem loop1: detected capacity change from 0 to 184 loop3: detected capacity change from 0 to 1298 loop1: loop3: FAT-fs (loop1): bogus logical sector size 554 FAT-fs (loop1): Can't find a valid FAT filesystem loop6: detected capacity change from 0 to 136 FAT-fs (loop3): Directory bread(block 54532) failed FAT-fs (loop3): Directory bread(block 54533) failed loop6: FAT-fs (loop3): Directory bread(block 54534) failed FAT-fs (loop3): Directory bread(block 54535) failed loop3: detected capacity change from 0 to 1298 loop1: detected capacity change from 0 to 184 loop6: detected capacity change from 0 to 136 loop3: loop1: loop6: FAT-fs (loop1): bogus logical sector size 559 FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 54788) failed FAT-fs (loop3): Directory bread(block 54789) failed FAT-fs (loop3): Directory bread(block 54790) failed FAT-fs (loop3): Directory bread(block 54791) failed loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 584 FAT-fs (loop1): Can't find a valid FAT filesystem loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 584 FAT-fs (loop1): Can't find a valid FAT filesystem loop3: detected capacity change from 0 to 1298 loop1: detected capacity change from 0 to 184 loop3: FAT-fs (loop3): Directory bread(block 55300) failed loop1: FAT-fs (loop1): bogus logical sector size 588 FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 55301) failed FAT-fs (loop3): Directory bread(block 55302) failed FAT-fs (loop3): Directory bread(block 55303) failed loop6: detected capacity change from 0 to 136 loop6: loop3: detected capacity change from 0 to 1298 loop1: detected capacity change from 0 to 184 loop1: loop3: FAT-fs (loop1): bogus logical sector size 616 FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 55556) failed FAT-fs (loop3): Directory bread(block 55557) failed loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 616 FAT-fs (loop3): Directory bread(block 55558) failed FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 55559) failed loop6: detected capacity change from 0 to 136 loop6: loop3: detected capacity change from 0 to 1298 netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'. loop1: detected capacity change from 0 to 184 ieee80211 phy34: Selected rate control algorithm 'minstrel_ht' loop3: loop1: FAT-fs (loop3): Directory bread(block 55812) failed FAT-fs (loop1): bogus logical sector size 620 FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 55813) failed FAT-fs (loop3): Directory bread(block 55814) failed FAT-fs (loop3): Directory bread(block 55815) failed loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 620 FAT-fs (loop1): Can't find a valid FAT filesystem netlink: 8 bytes leftover after parsing attributes in process `syz-executor.0'. ieee80211 phy35: Selected rate control algorithm 'minstrel_ht' audit: type=1326 audit(1661513540.389:41): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=13320 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f9c29c32b19 code=0x0 loop3: detected capacity change from 0 to 1298 loop1: detected capacity change from 0 to 184 loop3: loop6: detected capacity change from 0 to 136 loop1: loop6: FAT-fs (loop1): bogus logical sector size 628 FAT-fs (loop3): Directory bread(block 56068) failed FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 56069) failed FAT-fs (loop3): Directory bread(block 56070) failed FAT-fs (loop3): Directory bread(block 56071) failed loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 628 FAT-fs (loop1): Can't find a valid FAT filesystem audit: type=1326 audit(1661513540.501:42): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=13320 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f9c29c32b19 code=0x0 loop6: detected capacity change from 0 to 136 loop6: loop3: detected capacity change from 0 to 1298 loop1: detected capacity change from 0 to 184 loop3: loop1: loop6: detected capacity change from 0 to 136 FAT-fs (loop1): bogus logical sector size 632 FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop3): Directory bread(block 56324) failed FAT-fs (loop3): Directory bread(block 56325) failed loop6: FAT-fs (loop3): Directory bread(block 56326) failed FAT-fs (loop3): Directory bread(block 56327) failed loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 632 FAT-fs (loop1): Can't find a valid FAT filesystem loop6: detected capacity change from 0 to 136 loop6: loop3: detected capacity change from 0 to 1298 loop1: detected capacity change from 0 to 184 loop3: loop1: FAT-fs (loop3): Directory bread(block 56580) failed FAT-fs (loop3): Directory bread(block 56581) failed FAT-fs (loop3): Directory bread(block 56582) failed FAT-fs (loop3): Directory bread(block 56583) failed FAT-fs (loop1): bogus logical sector size 634 FAT-fs (loop1): Can't find a valid FAT filesystem loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 634 FAT-fs (loop1): Can't find a valid FAT filesystem audit: type=1400 audit(1661513541.645:43): avc: denied { map } for pid=13374 comm="syz-executor.7" path="pipe:[41480]" dev="pipefs" ino=41480 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=fifo_file permissive=1 audit: type=1400 audit(1661513541.645:44): avc: denied { execute } for pid=13374 comm="syz-executor.7" path="pipe:[41480]" dev="pipefs" ino=41480 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=fifo_file permissive=1 loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 688 FAT-fs (loop1): Can't find a valid FAT filesystem loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 688 FAT-fs (loop1): Can't find a valid FAT filesystem loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 695 FAT-fs (loop1): Can't find a valid FAT filesystem loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 695 FAT-fs (loop1): Can't find a valid FAT filesystem blk_print_req_error: 21 callbacks suppressed I/O error, dev loop1, sector 1 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 buffer_io_error: 21 callbacks suppressed Buffer I/O error on dev loop1, logical block 1, async page read loop3: detected capacity change from 0 to 1298 I/O error, dev loop1, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev loop1, logical block 2, async page read loop3: FAT-fs (loop3): Directory bread(block 56836) failed FAT-fs (loop3): Directory bread(block 56837) failed FAT-fs (loop3): Directory bread(block 56838) failed FAT-fs (loop3): Directory bread(block 56839) failed I/O error, dev loop1, sector 3 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev loop1, logical block 3, async page read I/O error, dev loop1, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev loop1, logical block 4, async page read I/O error, dev loop1, sector 5 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev loop1, logical block 5, async page read I/O error, dev loop1, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev loop1, logical block 6, async page read I/O error, dev loop1, sector 7 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev loop1, logical block 7, async page read loop1: detected capacity change from 0 to 184 loop1: FAT-fs (loop1): bogus logical sector size 696 FAT-fs (loop1): Can't find a valid FAT filesystem loop6: detected capacity change from 0 to 136 loop6: loop3: detected capacity change from 0 to 1298 loop3: FAT-fs (loop3): Directory bread(block 57092) failed FAT-fs (loop3): Directory bread(block 57093) failed FAT-fs (loop3): Directory bread(block 57094) failed FAT-fs (loop3): Directory bread(block 57095) failed