Hello, syzbot found the following issue on: HEAD commit: 73f2c2a7e1d2 Add linux-next specific files for 20230320 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=11ad6e1cc80000 kernel config: https://syzkaller.appspot.com/x/.config?x=f22105589e896af1 dashboard link: https://syzkaller.appspot.com/bug?extid=6d9043ea38ed2b9ef000 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17d199bac80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=159c7281c80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/2e4e105e18cf/disk-73f2c2a7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/08d761112297/vmlinux-73f2c2a7.xz kernel image: https://storage.googleapis.com/syzbot-assets/4b39e3e871ce/bzImage-73f2c2a7.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/662e0db5efdd/mount_0.gz The issue was bisected to: commit 8f4977bdd77ee3dce8af81488231e7535695f889 Author: Lorenzo Stoakes <lstoakes@xxxxxxxxx> Date: Sun Mar 19 07:09:31 2023 +0000 mm: vmalloc: use rwsem, mutex for vmap_area_lock and vmap_block->lock bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16c9956ec80000 final oops: https://syzkaller.appspot.com/x/report.txt?x=15c9956ec80000 console output: https://syzkaller.appspot.com/x/log.txt?x=11c9956ec80000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6d9043ea38ed2b9ef000@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 8f4977bdd77e ("mm: vmalloc: use rwsem, mutex for vmap_area_lock and vmap_block->lock") BUG: sleeping function called from invalid context at kernel/locking/mutex.c:580 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 41, name: kworker/u4:2 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 3 locks held by kworker/u4:2/41: #0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline] #0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline] #0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2376 #1: ffffc90000b27db0 ((work_completion)(&pwork->work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2380 #2: ffffffff8c796440 (rcu_read_lock){....}-{1:2}, at: vb_alloc mm/vmalloc.c:2090 [inline] #2: ffffffff8c796440 (rcu_read_lock){....}-{1:2}, at: vm_map_ram+0x7a/0xcf0 mm/vmalloc.c:2290 CPU: 0 PID: 41 Comm: kworker/u4:2 Not tainted 6.3.0-rc3-next-20230320-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Workqueue: xfs_iwalk-5100 xfs_pwork_work Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x136/0x150 lib/dump_stack.c:106 __might_resched+0x358/0x580 kernel/sched/core.c:10059 __mutex_lock_common kernel/locking/mutex.c:580 [inline] __mutex_lock+0x9f/0x1350 kernel/locking/mutex.c:747 vb_alloc mm/vmalloc.c:2105 [inline] vm_map_ram+0x13d/0xcf0 mm/vmalloc.c:2290 _xfs_buf_map_pages+0x158/0x3a0 fs/xfs/xfs_buf.c:441 xfs_buf_get_map+0x1cb8/0x2fd0 fs/xfs/xfs_buf.c:719 xfs_buf_read_map+0xce/0xb10 fs/xfs/xfs_buf.c:811 xfs_buf_readahead_map+0x8c/0xc0 fs/xfs/xfs_buf.c:889 xfs_buf_readahead fs/xfs/xfs_buf.h:262 [inline] xfs_btree_reada_bufs+0x170/0x1e0 fs/xfs/libxfs/xfs_btree.c:926 xfs_iwalk_ichunk_ra+0x2a1/0x3e0 fs/xfs/xfs_iwalk.c:114 xfs_iwalk_ag+0x607/0x930 fs/xfs/xfs_iwalk.c:455 xfs_iwalk_ag_work+0x14a/0x1c0 fs/xfs/xfs_iwalk.c:624 xfs_pwork_work+0x7f/0x160 fs/xfs/xfs_pwork.c:47 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x33e/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 </TASK> ============================= [ BUG: Invalid wait context ] 6.3.0-rc3-next-20230320-syzkaller #0 Tainted: G W ----------------------------- kworker/u4:2/41 is trying to lock: ffff88801d967468 (&vb->lock){+.+.}-{3:3}, at: vb_alloc mm/vmalloc.c:2105 [inline] ffff88801d967468 (&vb->lock){+.+.}-{3:3}, at: vm_map_ram+0x13d/0xcf0 mm/vmalloc.c:2290 other info that might help us debug this: context-{4:4} 3 locks held by kworker/u4:2/41: #0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:643 [inline] #0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline] #0: ffff8880234fc938 ((wq_completion)xfs_iwalk-5100){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2376 #1: ffffc90000b27db0 ((work_completion)(&pwork->work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2380 #2: ffffffff8c796440 (rcu_read_lock){....}-{1:2}, at: vb_alloc mm/vmalloc.c:2090 [inline] #2: ffffffff8c796440 (rcu_read_lock){....}-{1:2}, at: vm_map_ram+0x7a/0xcf0 mm/vmalloc.c:2290 stack backtrace: CPU: 0 PID: 41 Comm: kworker/u4:2 Tainted: G W 6.3.0-rc3-next-20230320-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Workqueue: xfs_iwalk-5100 xfs_pwork_work Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 print_lock_invalid_wait_context kernel/locking/lockdep.c:4724 [inline] check_wait_context kernel/locking/lockdep.c:4785 [inline] __lock_acquire+0x159e/0x5df0 kernel/locking/lockdep.c:5024 lock_acquire.part.0+0x11c/0x370 kernel/locking/lockdep.c:5691 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x12f/0x1350 kernel/locking/mutex.c:747 vb_alloc mm/vmalloc.c:2105 [inline] vm_map_ram+0x13d/0xcf0 mm/vmalloc.c:2290 _xfs_buf_map_pages+0x158/0x3a0 fs/xfs/xfs_buf.c:441 xfs_buf_get_map+0x1cb8/0x2fd0 fs/xfs/xfs_buf.c:719 xfs_buf_read_map+0xce/0xb10 fs/xfs/xfs_buf.c:811 xfs_buf_readahead_map+0x8c/0xc0 fs/xfs/xfs_buf.c:889 xfs_buf_readahead fs/xfs/xfs_buf.h:262 [inline] xfs_btree_reada_bufs+0x170/0x1e0 fs/xfs/libxfs/xfs_btree.c:926 xfs_iwalk_ichunk_ra+0x2a1/0x3e0 fs/xfs/xfs_iwalk.c:114 xfs_iwalk_ag+0x607/0x930 fs/xfs/xfs_iwalk.c:455 xfs_iwalk_ag_work+0x14a/0x1c0 fs/xfs/xfs_iwalk.c:624 xfs_pwork_work+0x7f/0x160 fs/xfs/xfs_pwork.c:47 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x33e/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 </TASK> BUG: sleeping function called from invalid context at kernel/locking/mutex.c:580 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 41, name: kworker/u4:2 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 INFO: lockdep is turned off. CPU: 1 PID: 41 Comm: kworker/u4:2 Tainted: G W 6.3.0-rc3-next-20230320-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Workqueue: xfs_iwalk-5163 xfs_pwork_work Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x136/0x150 lib/dump_stack.c:106 __might_resched+0x358/0x580 kernel/sched/core.c:10059 __mutex_lock_common kernel/locking/mutex.c:580 [inline] __mutex_lock+0x9f/0x1350 kernel/locking/mutex.c:747 vb_alloc mm/vmalloc.c:2105 [inline] vm_map_ram+0x13d/0xcf0 mm/vmalloc.c:2290 _xfs_buf_map_pages+0x158/0x3a0 fs/xfs/xfs_buf.c:441 xfs_buf_get_map+0x1cb8/0x2fd0 fs/xfs/xfs_buf.c:719 xfs_buf_read_map+0xce/0xb10 fs/xfs/xfs_buf.c:811 xfs_buf_readahead_map+0x8c/0xc0 fs/xfs/xfs_buf.c:889 xfs_buf_readahead fs/xfs/xfs_buf.h:262 [inline] xfs_btree_reada_bufs+0x170/0x1e0 fs/xfs/libxfs/xfs_btree.c:926 xfs_iwalk_ichunk_ra+0x2a1/0x3e0 fs/xfs/xfs_iwalk.c:114 xfs_iwalk_ag+0x607/0x930 fs/xfs/xfs_iwalk.c:455 xfs_iwalk_ag_work+0x14a/0x1c0 fs/xfs/xfs_iwalk.c:624 xfs_pwork_work+0x7f/0x160 fs/xfs/xfs_pwork.c:47 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x33e/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 </TASK> BUG: sleeping function called from invalid context at kernel/locking/mutex.c:580 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 41, name: kworker/u4:2 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 INFO: lockdep is turned off. CPU: 1 PID: 41 Comm: kworker/u4:2 Tainted: G W 6.3.0-rc3-next-20230320-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Workqueue: xfs_iwalk-5298 xfs_pwork_work Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x136/0x150 lib/dump_stack.c:106 __might_resched+0x358/0x580 kernel/sched/core.c:10059 __mutex_lock_common kernel/locking/mutex.c:580 [inline] __mutex_lock+0x9f/0x1350 kernel/locking/mutex.c:747 vb_alloc mm/vmalloc.c:2105 [inline] vm_map_ram+0x13d/0xcf0 mm/vmalloc.c:2290 _xfs_buf_map_pages+0x158/0x3a0 fs/xfs/xfs_buf.c:441 xfs_buf_get_map+0x1cb8/0x2fd0 fs/xfs/xfs_buf.c:719 xfs_buf_read_map+0xce/0xb10 fs/xfs/xfs_buf.c:811 xfs_buf_readahead_map+0x8c/0xc0 fs/xfs/xfs_buf.c:889 xfs_buf_readahead fs/xfs/xfs_buf.h:262 [inline] xfs_btree_reada_bufs+0x170/0x1e0 fs/xfs/libxfs/xfs_btree.c:926 xfs_iwalk_ichunk_ra+0x2a1/0x3e0 fs/xfs/xfs_iwalk.c:114 xfs_iwalk_ag+0x607/0x930 fs/xfs/xfs_iwalk.c:455 xfs_iwalk_ag_work+0x14a/0x1c0 fs/xfs/xfs_iwalk.c:624 xfs_pwork_work+0x7f/0x160 fs/xfs/xfs_pwork.c:47 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x33e/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
